CN110584690A - CT image data transmission method, device and equipment and CT system - Google Patents
CT image data transmission method, device and equipment and CT system Download PDFInfo
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Abstract
The embodiment of the invention provides a CT image data transmission method, a device and equipment and a CT system. According to the embodiment of the invention, the reference data volume Y (X) is determined according to the current CT scanning protocol, the target unit Frame matched with the reference data volume Y (X) is selected from the preset transmission basic unit Frame list, the acquired CT image data is sent to the CT console by taking the target unit Frame as a transmission unit, the data Frame with the proper size can be adaptively selected as the basic transmission unit in the CT image data transmission process according to the CT scanning protocol, and the data transmission efficiency is improved.
Description
Technical Field
The invention relates to the technical field of medical image processing, in particular to a method, a device and equipment for transmitting CT image data and a CT system.
Background
An electronic Computed TomographY (CT) apparatus is an important medical imaging apparatus. Currently, high-end CT devices have become an important research and development direction. In high-end CT devices, the number of scanning layers is increased, the rotation speed is increased, or the energy spectrum level is increased, which directly results in an increase in the data size of a single CT image.
After the CT device acquires the CT image data, the CT image data needs to be transmitted to the CT console. In the related art, for example, the CT device divides data of a single CT image into N fixed equal parts, and the data of each equal part is sent to the CT console as a data Frame one by one. In each of these techniques, when the data amount of a single CT image becomes large, the data amount per Frame becomes large because the value of the number N of copies does not change, which results in an increase in redundant data and thus a decrease in data transmission efficiency.
Disclosure of Invention
In order to overcome the problems in the related art, the invention provides a CT image data transmission method, a device, equipment and a CT system, which improve the data transmission efficiency.
According to a first aspect of the embodiments of the present invention, there is provided a CT image data transmission method applied to a CT image data transmission device, the method including:
determining a reference data volume Y (X) according to a current CT scanning protocol;
selecting a target unit frame matched with the reference data quantity Y (X) from a preset transmission basic unit frame list;
and sending the acquired CT image data to a CT console by taking the target unit frame as a transmission unit.
According to a second aspect of the embodiments of the present invention, there is provided a CT image data transmission apparatus applied to a CT image data transmission device, the apparatus including:
the determining module is used for determining the reference data quantity Y (X) according to the current CT scanning protocol;
a selection module, configured to select a target unit frame that matches the reference data amount y (x) from a preset transmission basic unit frame list;
and the transmission module is used for transmitting the acquired CT image data to the CT console by taking the target unit frame as a transmission unit in the process of carrying out CT scanning according to the CT scanning protocol.
According to a third aspect of embodiments of the present invention, there is provided a CT image data transmission apparatus, comprising a processor and a memory for storing executable instructions of the processor;
the processor is configured to:
determining a reference data volume Y (X) according to a current CT scanning protocol;
selecting a target unit frame matched with the reference data quantity Y (X) from a preset transmission basic unit frame list;
and sending the acquired CT image data to a CT console by taking the target unit frame as a transmission unit.
According to a fourth aspect of embodiments of the present invention, there is provided a CT system, the system comprising:
an X-ray bulb for emitting X-rays for irradiating a scanned subject;
the CT detector is used for receiving the attenuated X-rays passing through the scanned person, converting the X-rays into analog electric signals and sending the analog electric signals to CT image acquisition equipment;
the CT image acquisition equipment comprises the CT image data transmission device of any one of the second aspects, and is used for receiving the analog electric signals, converting the analog electric signals into digital signals to obtain CT image data and sending the CT image data to a CT console through the CT image data transmission device;
and the CT console is used for receiving the CT image data.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
according to the embodiment of the invention, the reference data amount Y (X) is determined according to the current CT scanning protocol, the target unit Frame matched with the reference data amount Y (X) is selected from the preset transmission basic unit Frame list, the acquired CT image data is sent to the CT console by taking the target unit Frame as a transmission unit, the data Frame with the proper size can be adaptively selected as the basic transmission unit in the CT image data transmission process according to the CT scanning protocol, and the data transmission efficiency is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the specification.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present specification and together with the description, serve to explain the principles of the specification.
Fig. 1 is a diagram illustrating an operation process of a CT apparatus.
Fig. 2 is a flowchart illustrating a CT image data transmission method according to an embodiment of the present invention.
Fig. 3 is a functional block diagram of a CT image data transmission apparatus according to an embodiment of the present invention.
Fig. 4 is a hardware structure diagram of a CT image data transmission device according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of embodiments of the invention, as detailed in the following claims.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of embodiments of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It should be understood that although the terms first, second, third, etc. may be used to describe various information in embodiments of the present invention, the information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information, without departing from the scope of embodiments of the present invention. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
Herein, the CT apparatus is an integrated apparatus, and can be used for performing a series of processes such as CT scanning, CT image data acquisition, and CT image data transmission. The CT device is connected with the CT console in a wired or wireless mode, and after the CT device collects CT image data, the CT image data are sent to the CT console, and the CT console performs corresponding subsequent processing on the CT image data according to application requirements.
In one example, the CT device comprises a CT frame, and an X-ray tube, a CT detector and a CT image acquisition device which are arranged on the CT frame. The CT image acquisition device may be used as a CT image data transmission device in the embodiment of the present invention. The overall operation of the CT apparatus will be described below by taking the CT apparatus as an example.
Fig. 1 is a diagram illustrating an operation process of a CT apparatus. Referring to fig. 1, the working process of the CT apparatus is:
the X-ray bulb tube emits X-rays to irradiate a scanned person;
the CT detector receives the attenuated X-rays, converts the X-rays into analog electric signals and sends the analog electric signals to CT image acquisition equipment;
the CT image acquisition equipment receives the analog electric signal, converts the analog electric signal into a digital signal and caches the digital signal locally; and after the cache data are processed, the cache data are transmitted to the CT console according to a certain data transmission format.
The data transmission format in fig. 1 includes the data amount and the number of data frames as transmission units.
During a CT scan, the data size of a single CT image is determined by the CT scan protocol, and when different CT scan protocols are used, the data size of a single CT image is usually different. As shown in fig. 1, in the related art, regardless of the CT scan protocol, the CT image acquisition device divides a single CT image (View) into N fixed shares, each of which is called a data Frame, and then sends the N frames to the CT console one by one. Wherein the data amount of each data Frame is equal to the data amount of one transmission unit. The transmission unit is a basic unit for transmitting CT image data, and determines the data amount of each data Frame in transmission. In the data transmission process, every time the CT control console receives a complete Frame, a transmission completion confirmation signal is returned to the CT image acquisition equipment; and after receiving the transmission completion confirmation signal, the CT image acquisition equipment sends the next Frame to the CT console.
If the CT image acquisition device does not receive the transmission completion confirmation signal returned by the CT console within the specified time, the CT image acquisition device resends the data Frame that is not successfully transmitted to the CT console until the data Frame is successfully transmitted or the transmission is confirmed to fail (for example, when the data Frame is not received when the retransmission times of the data Frame reaches the specified times or the transmission completion confirmation signal corresponding to the data Frame is not received when the current time length reaches the specified time length from the time when the data Frame is transmitted for the first time, the transmission completion confirmation signal corresponding to the data Frame is not received, the transmission of the data Frame is confirmed to fail). This process is called data retransmission.
In addition to the above-mentioned data retransmission mechanism, the CT device may also utilize an error correction mechanism or other reliability mechanism to ensure the reliability of data transmission.
In the related art, since the value of N is always constant, when the data amount of a single CT image (View) increases, the data amount of each data Frame becomes large, which may cause the following problems:
first, data transmission efficiency is reduced.
The calculation formula of the data transmission efficiency is as follows:
in the formula (1), F% is data transmission efficiency, y (x) is data amount of data to be transmitted, S is data amount of each data Frame, N is number of the data frames, BP is redundant data amount to be increased, a and b are constants, a is idle time between a data Frame and a data Frame in a transmission process, and b is other idle time except a in the transmission process. The value of b is small, and the influence on the calculation result of the data transmission efficiency is very small, so that the value of b can be ignored when calculating the data transmission efficiency.
The larger the data amount of the data Frame is, the larger the redundant data amount is. As can be seen from equation (1), when the value of N is constant, an increase in the amount of redundant data leads to a decrease in data transmission efficiency.
Second, the real-time performance of data transmission is reduced.
After the CT image acquisition device sends a data Frame, the CT image acquisition device can send the next data Frame only after receiving the transmission completion confirmation signal corresponding to the data Frame. The longer the time between the moment when the CT image acquisition device sends the data Frame and the moment when the CT image acquisition device receives the transmission completion confirmation signal corresponding to the data Frame, the lower the real-time performance, and the shorter the time, the higher the real-time performance.
When the data amount of the data Frame becomes large, the duration from the time when the CT image acquisition device sends the data Frame to the time when the CT image acquisition device receives the transmission completion confirmation signal corresponding to the data Frame becomes long, so that the real-time performance is reduced.
Third, the adaptability is poor.
Before the CT image acquisition device sends the data Frame, the data of the data Frame is stored in the cache unit of the CT image acquisition device, and after the CT console receives the data Frame, the data of the data Frame is also stored in the cache unit of the CT console. Each buffer unit stores one data Frame. Therefore, when the data amount of the data Frame becomes large, the capacities of the buffer unit of the CT image acquisition apparatus and the buffer unit of the CT console are required to be large. The capacity of the buffer unit in a device is related to the hardware structure of the device, when the hardware structure of the device is fixed, the capacity of the buffer unit of the device is fixed, and if the capacity of the buffer unit of the device needs to be changed, the hardware structure of the device needs to be modified. If the capacity of the buffer unit of the device is not changed, when the data amount of the data Frame is larger than the capacity of the buffer unit of at least one device of the CT image acquisition device and the CT console, the data transmission format in the related art is not supported, and thus the adaptability of the related art is poor.
The CT image data transmission method provided by the embodiment of the invention can adaptively select the data Frame with a proper size according to the CT scanning protocol to be used as a basic transmission unit in the CT image data transmission process, thereby improving the data transmission efficiency. Herein, the reference data amount y (x) refers to a reference data amount of the data Frame divided by the CT image data transmission device when transmitting data, that is, the CT image data transmission device divides the data Frame with the reference data amount y (x) as a reference, and when the CT image data acquired by the CT image data transmission device reaches the reference data amount y (x), the CT image data transmission device performs Frame division once and transmits each Frame data after Frame division to the CT console.
The following describes the CT image data transmission method provided by the present invention by embodiments.
Fig. 2 is a flowchart illustrating a CT image data transmission method according to an embodiment of the present invention. The CT image data transmission method can be applied to a CT image data transmission device, for example, the CT image acquisition device in fig. 1 can be used as the CT image data transmission device. As shown in fig. 2, the CT image data transmission method may include:
s201, determining a reference data quantity Y (X) according to a current CT scanning protocol.
S202, selecting a target unit frame matching the reference data amount y (x) from a preset transmission basic unit frame list.
S203, the acquired CT image data is sent to a CT console by taking the target unit frame as a transmission unit.
In one example, the device may store a correspondence relationship between the CT scanning protocol and the reference data amount y (x) in advance, and the step S201 may determine the reference data amount y (x) by: and finding out the reference data quantity Y (X) corresponding to the current CT scanning protocol from the corresponding relation between the pre-stored CT scanning protocol and the reference data quantity Y (X) as the determined reference data quantity Y (X).
In the correspondence relationship between the CT scan protocols and the reference data amounts y (x), the reference data amount y (x) corresponding to each CT scan protocol is preset. Therefore, when the current CT scanning protocol is known, the reference data amount y (x) corresponding to the current CT scanning protocol can be determined through the correspondence relationship.
In step S202, the basic unit frame in the transmission basic unit frame list is preset, for example, it can be preset in ROM or in chip or in system configuration file. The unit frame in the transmission basic unit frame list is used as a basic unit for dividing the reference data amount y (x). In other examples, the basic unit frames in the transmission basic unit frame list may also be calculated by the system in real time according to the model of the device where the current system is located.
The data size of each transmission basic unit frame is stored in the transmission basic unit frame list. The transmission basic unit frames can be arranged in the order of the data size from large to small or in the order of small to large, or can be arranged randomly. For example, the transmission elementary unit frame list may be as shown in table 1:
table 1 transmission elementary unit frame list
It should be noted that, in order to enable the CT image data transmission method provided in the embodiment of the present invention to be applicable to various types of devices, the data amount of some unit frames in the transmission basic unit frame list may exceed the buffer unit capacity of the current CT image data transmission device or the current CT console, at this time, when the target unit frame is selected, the unit frame is selected from the unit frames supported by both the current CT image data transmission device and the current CT console, and the unit frame supported by both the current CT image data transmission device and the current CT console refers to a unit frame whose data amount is smaller than the buffer unit capacity of the current CT image data transmission device and smaller than the buffer unit capacity of the current CT console.
For example. Assuming that there are 10 unit frames in the transmission basic unit frame list, the data size is arranged from small to large: s1 and S2 … … S10, wherein the data amount of S1-S6 is smaller than the buffer unit capacity of the current CT image data transmission device and smaller than the buffer unit capacity of the current CT console, and the data amount of S7-S10 is at least larger than the buffer unit capacity of one of the current CT console of the current CT image data transmission device, then the target unit frame is selected from S1-S6.
In step S202, the target unit frame matched with the reference data amount y (x) needs to satisfy two conditions: firstly, the data volume of a target unit frame is smaller than the capacity of a cache unit of CT image data transmission equipment and smaller than the capacity of the cache unit of a CT console; secondly, the data transmission efficiency is the maximum when the target unit frame is used as the transmission unit to transmit the CT image data in the unit frames which are supported by all the current CT image data transmission equipment and the current CT console in the transmission basic unit frame list.
The former condition enables the current CT image data transmission apparatus and CT console to always support the transmission of CT image data without increasing the capacity of the buffer unit by modifying the hardware structure of the apparatus to meet the CT image data transmission requirement. The latter condition enables higher data transmission efficiency to be obtained.
Through step S202, in each CT scan, a data Frame with an appropriate size can be adaptively matched with respect to a reference data amount y (x) corresponding to a current CT scan protocol, and is used as a basic transmission unit in a CT image data transmission process. The support of the current CT image data transmission equipment and the current CT control console can be obtained, and higher data transmission efficiency can be obtained.
In step S203, the step of sending the acquired CT image data to the CT console with the target unit frame as the transmission unit means that, each group of CT image data with the data amount equal to the reference data amount y (x) is acquired, the group of CT image data is divided into a plurality of data frames according to the data amount of the target unit frame, and then the plurality of data frames are sent to the CT console one by one.
In the embodiment of the invention, under different CT scanning protocols, the data volume of the target unit frame serving as the transmission basic unit frame is adaptively changed according to the reference data volume Y (X) corresponding to the current scanning protocol, but is not fixed. This is advantageous for selecting a target unit frame with high transmission efficiency.
In an exemplary implementation, step S202 includes:
selecting a reference unit frame from the transmission basic unit frame list for each reference data amount Y (X), the data amount of the reference unit frame being less than or equal to the reference data amount Y (X);
for each reference unit frame, determining the data transmission efficiency of transmitting the reference data quantity Y (X) by taking the reference unit frame as a transmission unit;
and searching the maximum efficiency value in the data transmission efficiency corresponding to all the reference unit frames of all the reference data amounts Y (X), and determining the reference unit frame corresponding to the maximum efficiency value as a target unit frame.
In one example, the manner of selecting the reference unit frame from the transmission basic unit frame list may be: determining the minimum capacity value of a first capacity value corresponding to a cache unit of the equipment and a second capacity value corresponding to the cache unit of the CT console; and traversing each unit frame in the transmission basic unit frame list, and if the data volume of the unit frame is less than the determined minimum volume value, determining the unit frame as a reference unit frame.
In one example, the data transmission efficiency may be calculated according to the aforementioned formula (1).
The following illustrates how the target unit frame is determined. In this example, there are 4 reference unit frames S1-S4 in the transmission basic unit frame list, and the parameters related to the data transmission efficiency and the corresponding data transmission efficiency of each reference unit frame are shown in table 2:
table 2 reference unit frame and data transmission efficiency correspondence table
The data transmission efficiency of the unit frame S3 among the reference unit frames S1 through S4 is the greatest according to table 2, and thus the unit frame S3 is the target unit frame.
The determination process of the target unit frame is exemplified. In this example, the reference data amount y (X) is equal to the data amount of a single CT image, there are X unit frames in the transmission basic unit frame list, the data amounts are sequentially arranged from small to large as S (1), S (2) … … S (X-1), and S (X), an initial value K is set to 1, the maximum value of K is equal to X, the step size is L (L is an integer), and then the determination process of the target unit frame may be as follows:
step c1, determining whether Y (X) is larger than the data volume S (K) of the Kth unit frame, if yes, executing step c2, otherwise executing step c 5;
step c2, calculating the quotient of Y (X) divided by S (K), and rounding up to obtain an integer P (K);
step c3, calculating the data transmission efficiency F% (K) of the Kth unit frame according to the formula (1);
step c4, making K equal to K + L, and returning to step c 1;
and step c5, finding out the maximum value MAX-F% from all the calculated F% (K), and determining the unit frame corresponding to MAX-F% as the target unit frame.
In an exemplary implementation, for each reference unit frame, determining data transmission efficiency of transmitting a reference data amount y (x) by using the reference unit frame as a transmission unit includes:
rounding the quotient obtained by dividing the reference data quantity Y (X) by the data quantity S of the reference unit frame upwards to obtain the frame quantity P;
acquiring a first idle time and a second idle time corresponding to a CT scanning protocol, wherein the first idle time is an idle time between a unit frame and a unit frame during transmission, and the second idle time is other idle times except the idle time between the unit frame and the unit frame;
and calculating the data transmission efficiency of transmitting the reference data quantity Y (X) by taking the reference unit frame as a transmission unit according to the reference data quantity Y (X), the data quantity S of the reference unit frame, the frame quantity P, the first idle time length and the second idle time length.
Here, the first idle time period is a constant a in the foregoing formula (1), and the second idle time period is a constant b in the foregoing formula (1). For each reference unit frame, the data transmission efficiency corresponding to the reference unit frame can be calculated according to the aforementioned formula (1).
In one exemplary implementation, the method for determining the data size of the transmission basic unit frame in the transmission basic unit frame list comprises the following steps:
acquiring a first capacity value corresponding to a cache unit of the equipment and a second capacity value corresponding to the cache unit of the CT console; taking the small value of the first capacity value and the second capacity value as a reference capacity value W;
determining the number A of transmission basic unit frames, wherein the minimum value of the number A is 1, the maximum value of the number A is W, and one of any two adjacent numbers is 2 times that of the other number;
and respectively calculating the quotient of dividing the reference capacity value W by the number of copies A to obtain the data volume W (A) of each unit frame in the transmission basic unit frame list.
According to this example, the data amount of each unit frame in the transmission basic unit frame list is, from large to small: w, W/2, W/4, … … 4, 2, 1, in bits (bit).
In other embodiments, the data amount of each unit frame in the transmission basic unit frame list may be determined according to other manners, for example, after the reference capacity value W is obtained, the arithmetic progression at the beginning of W may be taken as the data amount of each unit frame. For example, when the difference is 2, the data amount of each unit frame in the transmission basic unit frame list is, from large to small: w, W-2 and W-4 … ….
In this example, the data size of each unit frame in the transmission basic unit frame list is set based on the capacity of the buffer unit with a small capacity in the buffer unit of the apparatus and the buffer unit of the CT console, and therefore, the maximum data size of the unit frame in the transmission basic unit frame list does not exceed the capacity of the buffer unit of either the apparatus or the CT console, so that the CT image data transmission method according to the embodiment of the present invention can be used in the CT image data transmission process between the apparatus and the CT console without changing the buffer unit capacities of the apparatus and the CT console.
In other embodiments, the value of W set for the design purposes of reliable operation, high real-time performance, high efficiency of CT data transmission, and high real-time performance of the CT data acquisition system, such as the constraint conditions set for the real-time performance of transmission of the CT data acquisition system, falls within the scope of the present invention.
In one exemplary implementation, the sending the acquired CT image data to the CT console with the target unit frame as a transmission unit includes:
grouping the acquired CT image data according to a reference data quantity Y (X) corresponding to a target unit frame, wherein the data quantity of each group of CT image data is equal to the reference data quantity Y (X);
determining the number of target unit frames corresponding to each group of CT image data according to the target unit frames and the reference data quantity Y (X) corresponding to the target unit frames;
framing each group of CT image data according to the data quantity of the target unit frame to obtain a transmission data frame;
determining whether the current transmission data frame is the last data frame in the group of CT image data according to the number of the target unit frames;
if so, supplementing redundant data into the current transmission data frame to obtain a new data frame, wherein the data volume of the new data frame is equal to that of the target unit frame, and sending the new data frame to the CT console;
if not, the current transmission data frame is directly sent to the CT console.
In at least one data frame obtained after each group of CT image data is framed, the data volume of the last data frame is usually smaller than that of the target unit frame, so that redundant data needs to be supplemented.
According to the CT image data transmission method provided by the embodiment of the invention, the reference data volume Y (X) is determined according to the current CT scanning protocol, the target unit Frame matched with the reference data volume Y (X) is selected from the preset transmission basic unit Frame list, the acquired CT image data is sent to the CT console by taking the target unit Frame as a transmission unit, the data Frame with the proper size can be adaptively selected as the basic transmission unit in the CT image data transmission process according to the CT scanning protocol, and the data transmission efficiency is improved.
In addition, in the CT image data transmission method provided in the embodiment of the present invention, the data size of the data Frame serving as the basic transmission unit is controlled within a proper range, and does not increase endlessly with the increase of the data size of a single CT image, so that the duration reflecting the real-time performance (i.e., the duration between the time when the CT image acquisition device sends the data Frame and the time when the CT image acquisition device receives the transmission completion confirmation signal corresponding to the data Frame) is controlled within a short time, and thus, the high transmission real-time performance can be maintained.
Based on the above method embodiment, the embodiment of the present invention further provides corresponding apparatus, device, and storage medium embodiments. For detailed implementation of the embodiments of the apparatus, device and storage medium of the embodiments of the present invention, please refer to the corresponding descriptions in the foregoing method embodiments.
Fig. 3 is a functional block diagram of a CT image data transmission apparatus according to an embodiment of the present invention. As shown in fig. 3, in this embodiment, the CT image data transmission device may include:
a determining module 310, configured to determine a reference data amount y (x) according to a current CT scanning protocol;
a selecting module 320, configured to select a target unit frame that matches the reference data amount y (x) from a preset transmission basic unit frame list;
and the transmission module 330 is configured to send the acquired CT image data to the CT console by using the target unit frame as a transmission unit.
In an exemplary implementation, the selection module 320 may be specifically configured to:
selecting a reference unit frame from the transmission basic unit frame list for each reference data amount Y (X), the data amount of the reference unit frame being less than or equal to the reference data amount Y (X);
for each reference unit frame, determining the data transmission efficiency of transmitting the reference data quantity Y (X) by taking the reference unit frame as a transmission unit;
and searching the maximum efficiency value in the data transmission efficiency corresponding to all the reference unit frames of all the reference data amounts Y (X), and determining the reference unit frame corresponding to the maximum efficiency value as a target unit frame.
In an exemplary implementation process, the selecting module 320, when configured to determine, for each reference unit frame, a data transmission efficiency for transmitting the reference data amount y (x) by using the reference unit frame as a transmission unit, may specifically be configured to:
rounding the quotient obtained by dividing the reference data quantity Y (X) by the data quantity S of the reference unit frame upwards to obtain a frame quantity P;
acquiring a first idle time and a second idle time corresponding to a CT scanning protocol, wherein the first idle time is an idle time between a unit frame and a unit frame during transmission, and the second idle time is other idle times except the idle time between the unit frame and the unit frame;
and calculating the data transmission efficiency of transmitting the reference data quantity Y (X) by taking the reference unit frame as a transmission unit according to the reference data quantity Y (X), the data quantity S of the reference unit frame, the frame quantity P, the first idle time length and the second idle time length.
In an exemplary implementation, the method for determining the data size of the transmission basic unit frame in the transmission basic unit frame list includes the following steps:
acquiring a first capacity value corresponding to a cache unit of the equipment and a second capacity value corresponding to the cache unit of the CT console; taking the small value of the first capacity value and the second capacity value as a reference capacity value W;
determining the number A of transmission basic unit frames, wherein the minimum value of the number A is 1, the maximum value of the number A is W, and one of any two adjacent numbers is 2 times that of the other number;
and respectively calculating the quotient of dividing the reference capacity value W by the number of copies A to obtain the data volume W (A) of each unit frame in the transmission basic unit frame list.
In an exemplary implementation process, the transmission module 330 is specifically configured to:
grouping the acquired CT image data according to a reference data quantity Y (X) corresponding to a target unit frame, wherein the data quantity of each group of CT image data is equal to the reference data quantity Y (X);
determining the number of target unit frames corresponding to each group of CT image data according to the target unit frames and the reference data quantity Y (X) corresponding to the target unit frames;
framing each group of CT image data according to the data quantity of the target unit frame to obtain a transmission data frame;
determining whether the current transmission data frame is the last data frame in the group of CT image data according to the number of the target unit frames;
if so, supplementing redundant data into the current transmission data frame to obtain a new data frame, wherein the data volume of the new data frame is equal to that of the target unit frame, and sending the new data frame to the CT console;
if not, the current transmission data frame is directly sent to the CT console.
In an exemplary implementation, the reference data amount y (x) is equal to the data amount of a single CT image, the data amount of a set number of CT images, or a set data amount.
The embodiment of the present invention further provides a CT system, which includes:
an X-ray bulb for emitting X-rays for irradiating a scanned subject;
the CT detector is used for receiving the attenuated X-rays passing through the scanned person, converting the X-rays into analog electric signals and sending the analog electric signals to CT image acquisition equipment;
the CT image acquisition equipment comprises any one of the CT image data transmission devices in the embodiments, and is used for receiving the analog electric signals, converting the analog electric signals into digital signals to obtain CT image data, and transmitting the CT image data to a CT console through the CT image data transmission device;
and the CT console is used for receiving the CT image data.
The embodiment of the invention also provides CT image data transmission equipment. Fig. 4 is a hardware structure diagram of a CT image data transmission device according to an embodiment of the present invention. As shown in fig. 4, the CT image data transmission apparatus includes: an internal bus 401, and a memory 402, a processor 403, and an external interface 404 connected through the internal bus.
The processor 403 is configured to read the machine-readable instructions in the memory 402 and execute the instructions to implement the following operations:
determining a reference data volume Y (X) according to a current CT scanning protocol;
selecting a target unit frame matched with the reference data quantity Y (X) from a preset transmission basic unit frame list;
and sending the acquired CT image data to a CT console by taking the target unit frame as a transmission unit.
In an exemplary implementation, processor 403 further executes the instructions to perform the following operations:
selecting a reference unit frame from the transmission basic unit frame list for each reference data amount Y (X), the data amount of the reference unit frame being smaller than the reference data amount Y (X);
for each reference unit frame, determining the data transmission efficiency of transmitting the reference data quantity Y (X) by taking the reference unit frame as a transmission unit;
and searching the maximum efficiency value in the data transmission efficiency corresponding to all the reference unit frames of all the reference data amounts Y (X), and determining the reference unit frame corresponding to the maximum efficiency value as a target unit frame.
In an exemplary implementation, processor 403 further executes the instructions to perform the following operations:
rounding the quotient obtained by dividing the reference data quantity Y (X) by the data quantity S of the reference unit frame upwards to obtain a frame quantity P;
acquiring a first idle time and a second idle time corresponding to a CT scanning protocol, wherein the first idle time is an idle time between a unit frame and a unit frame during transmission, and the second idle time is other idle times except the idle time between the unit frame and the unit frame;
and calculating the data transmission efficiency of transmitting the reference data quantity Y (X) by taking the reference unit frame as a transmission unit according to the reference data quantity Y (X), the data quantity S of the reference unit frame, the frame quantity P, the first idle time length and the second idle time length.
In an exemplary implementation, the method for determining the data size of the transmission basic unit frame in the transmission basic unit frame list includes the following steps:
acquiring a first capacity value corresponding to a cache unit of the equipment and a second capacity value corresponding to the cache unit of the CT console; taking the small value of the first capacity value and the second capacity value as a reference capacity value W;
determining the number A of transmission basic unit frames, wherein the minimum value of the number A is 1, the maximum value of the number A is W, and one of any two adjacent numbers is 2 times that of the other number;
and respectively calculating the quotient of dividing the reference capacity value W by the number of copies A to obtain the data volume W (A) of each unit frame in the transmission basic unit frame list.
In an exemplary implementation, processor 403 further executes the instructions to perform the following operations:
grouping the acquired CT image data according to a reference data quantity Y (X) corresponding to a target unit frame, wherein the data quantity of each group of CT image data is equal to the reference data quantity Y (X);
determining the number of target unit frames corresponding to each group of CT image data according to the target unit frames and the reference data quantity Y (X) corresponding to the target unit frames;
framing each group of CT image data according to the data quantity of the target unit frame to obtain a transmission data frame;
determining whether the current transmission data frame is the last data frame in the group of CT image data according to the number of the target unit frames;
if so, supplementing redundant data into the current transmission data frame to obtain a new data frame, wherein the data volume of the new data frame is equal to that of the target unit frame, and sending the new data frame to the CT console;
if not, the current transmission data frame is directly sent to the CT console.
In an exemplary implementation, the reference data amount y (x) is equal to the data amount of a single CT image, the data amount of a set number of CT images, or a set data amount.
An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the program, when executed by a processor, implements the following operations:
determining a reference data volume Y (X) according to a current CT scanning protocol;
selecting a target unit frame matched with the reference data quantity Y (X) from a preset transmission basic unit frame list;
and sending the acquired CT image data to a CT console by taking the target unit frame as a transmission unit.
In an exemplary implementation, the selecting, from a preset transmission basic unit frame list, a target unit frame matching the reference data amount y (x) includes:
selecting a reference unit frame from the transmission basic unit frame list for each reference data amount Y (X), the data amount of the reference unit frame being smaller than the reference data amount Y (X);
for each reference unit frame, determining the data transmission efficiency of transmitting the reference data quantity Y (X) by taking the reference unit frame as a transmission unit;
and searching the maximum efficiency value in the data transmission efficiency corresponding to all the reference unit frames of all the reference data amounts Y (X), and determining the reference unit frame corresponding to the maximum efficiency value as a target unit frame.
In an exemplary implementation, for each reference unit frame, determining a data transmission efficiency for transmitting the reference data amount y (x) by using the reference unit frame as a transmission unit includes:
rounding the quotient obtained by dividing the reference data quantity Y (X) by the data quantity S of the reference unit frame upwards to obtain a frame quantity P;
acquiring a first idle time and a second idle time corresponding to a CT scanning protocol, wherein the first idle time is an idle time between a unit frame and a unit frame during transmission, and the second idle time is other idle times except the idle time between the unit frame and the unit frame;
and calculating the data transmission efficiency of transmitting the reference data quantity Y (X) by taking the reference unit frame as a transmission unit according to the reference data quantity Y (X), the data quantity S of the reference unit frame, the frame quantity P, the first idle time length and the second idle time length.
In an exemplary implementation, the method for determining the data size of the transmission basic unit frame in the transmission basic unit frame list includes the following steps:
acquiring a first capacity value corresponding to a cache unit of the equipment and a second capacity value corresponding to the cache unit of the CT console; taking the small value of the first capacity value and the second capacity value as a reference capacity value W;
determining the number A of transmission basic unit frames, wherein the minimum value of the number A is 1, the maximum value of the number A is W, and one of any two adjacent numbers is 2 times that of the other number;
and respectively calculating the quotient of dividing the reference capacity value W by the number of copies A to obtain the data volume W (A) of each unit frame in the transmission basic unit frame list.
In an exemplary implementation process, the sending the acquired CT image data to the CT console with the target unit frame as a transmission unit includes:
grouping the acquired CT image data according to a reference data quantity Y (X) corresponding to a target unit frame, wherein the data quantity of each group of CT image data is equal to the reference data quantity Y (X);
determining the number of target unit frames corresponding to each group of CT image data according to the target unit frames and the reference data quantity Y (X) corresponding to the target unit frames;
framing each group of CT image data according to the data quantity of the target unit frame to obtain a transmission data frame;
determining whether the current transmission data frame is the last data frame in the group of CT image data according to the number of the target unit frames;
if so, supplementing redundant data into the current transmission data frame to obtain a new data frame, wherein the data volume of the new data frame is equal to that of the target unit frame, and sending the new data frame to the CT console;
if not, the current transmission data frame is directly sent to the CT console.
In an exemplary implementation, the reference data amount y (x) is equal to the data amount of a single CT image, the data amount of a set number of CT images, or a set data amount.
For the device and apparatus embodiments, as they correspond substantially to the method embodiments, reference may be made to the partial description of the method embodiments for relevant points. The above-described embodiments of the apparatus are merely illustrative, wherein the modules described as separate parts may or may not be physically separate, and the parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution in the specification. One of ordinary skill in the art can understand and implement it without inventive effort.
The foregoing description has been directed to specific embodiments of this disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.
Other embodiments of the present description will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This specification is intended to cover any variations, uses, or adaptations of the specification following, in general, the principles of the specification and including such departures from the present disclosure as come within known or customary practice within the art to which the specification pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the specification being indicated by the following claims.
It will be understood that the present description is not limited to the precise arrangements described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present description is limited only by the appended claims.
The above description is only a preferred embodiment of the present disclosure, and should not be taken as limiting the present disclosure, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.
Claims (10)
1. A CT image data transmission method is applied to a CT image data transmission device, and comprises the following steps:
determining a reference data volume Y (X) according to a current CT scanning protocol;
selecting a target unit frame matched with the reference data quantity Y (X) from a preset transmission basic unit frame list;
and sending the acquired CT image data to a CT console by taking the target unit frame as a transmission unit.
2. The method of claim 1, wherein the selecting the target unit frame matching the reference data amount y (x) from a preset transmission basic unit frame list comprises:
selecting a reference unit frame from the transmission basic unit frame list for each reference data amount Y (X), the data amount of the reference unit frame being less than or equal to the reference data amount Y (X);
for each reference unit frame, determining the data transmission efficiency of transmitting the reference data quantity Y (X) by taking the reference unit frame as a transmission unit;
and searching the maximum efficiency value in the data transmission efficiency corresponding to all the reference unit frames of all the reference data amounts Y (X), and determining the reference unit frame corresponding to the maximum efficiency value as a target unit frame.
3. The method of claim 2, wherein determining, for each frame of reference units, the data transmission efficiency for transmitting the reference data amount y (x) in units of transmission of the frame of reference units comprises:
rounding the quotient obtained by dividing the reference data quantity Y (X) by the data quantity S of the reference unit frame upwards to obtain a frame quantity P;
acquiring a first idle time and a second idle time corresponding to a CT scanning protocol, wherein the first idle time is an idle time between a unit frame and a unit frame during transmission, and the second idle time is other idle times except the idle time between the unit frame and the unit frame;
and calculating the data transmission efficiency of transmitting the reference data quantity Y (X) by taking the reference unit frame as a transmission unit according to the reference data quantity Y (X), the data quantity S of the reference unit frame, the frame quantity P, the first idle time length and the second idle time length.
4. The method of claim 1, wherein the method for determining the data size of the transmission basic unit frame in the transmission basic unit frame list comprises the following steps:
acquiring a first capacity value corresponding to a cache unit of the equipment and a second capacity value corresponding to the cache unit of the CT console; taking the small value of the first capacity value and the second capacity value as a reference capacity value W;
determining the number A of transmission basic unit frames, wherein the minimum value of the number A is 1, the maximum value of the number A is W, and one of any two adjacent numbers is 2 times that of the other number;
and respectively calculating the quotient of dividing the reference capacity value W by the number of copies A to obtain the data volume W (A) of each unit frame in the transmission basic unit frame list.
5. The method according to claim 1, wherein the sending the acquired CT image data to a CT console with the target unit frame as a transmission unit comprises:
grouping the acquired CT image data according to a reference data quantity Y (X) corresponding to a target unit frame, wherein the data quantity of each group of CT image data is equal to the reference data quantity Y (X);
determining the number of target unit frames corresponding to each group of CT image data according to the target unit frames and the reference data quantity Y (X) corresponding to the target unit frames;
framing each group of CT image data according to the data quantity of the target unit frame to obtain a transmission data frame;
determining whether the current transmission data frame is the last data frame in the group of CT image data according to the number of the target unit frames;
if so, supplementing redundant data into the current transmission data frame to obtain a new data frame, wherein the data volume of the new data frame is equal to that of the target unit frame, and sending the new data frame to the CT console;
if not, the current transmission data frame is directly sent to the CT console.
6. A CT image data transmission apparatus, applied to a CT image data transmission device, the apparatus comprising:
the determining module is used for determining the reference data quantity Y (X) according to the current CT scanning protocol;
a selection module, configured to select a target unit frame that matches the reference data amount y (x) from a preset transmission basic unit frame list;
and the transmission module is used for transmitting the acquired CT image data to the CT console by taking the target unit frame as a transmission unit.
7. The apparatus of claim 6, wherein the selection module is specifically configured to:
selecting a reference unit frame from the transmission basic unit frame list, wherein the data volume of the reference unit frame is less than a reference data volume Y (X);
for each reference unit frame, determining the data transmission efficiency of transmitting the reference data quantity Y (X) by taking the reference unit frame as a transmission unit;
and searching the maximum efficiency value in the data transmission efficiency corresponding to each reference unit frame, and determining the reference unit frame corresponding to the maximum efficiency value as a target unit frame.
8. The apparatus according to claim 7, wherein the selecting module, when configured to determine, for each reference unit frame, the data transmission efficiency for transmitting the reference data amount y (x) with the reference unit frame as the transmission unit, is specifically configured to:
rounding the quotient obtained by dividing the reference data quantity Y (X) by the data quantity S of the reference unit frame upwards to obtain a frame quantity P;
acquiring a first idle time and a second idle time corresponding to a CT scanning protocol, wherein the first idle time is an idle time between a unit frame and a unit frame during transmission, and the second idle time is other idle times except the idle time between the unit frame and the unit frame;
and calculating the data transmission efficiency of transmitting the reference data quantity Y (X) by taking the reference unit frame as a transmission unit according to the reference data quantity Y (X), the data quantity S of the reference unit frame, the frame quantity P, the first idle time length and the second idle time length.
9. A CT image data transmission apparatus comprising a processor and a memory for storing executable instructions of the processor;
the processor is configured to:
determining a reference data volume Y (X) according to a current CT scanning protocol;
selecting a target unit frame matched with the reference data quantity Y (X) from a preset transmission basic unit frame list;
and sending the acquired CT image data to a CT console by taking the target unit frame as a transmission unit.
10. A CT system, the system comprising:
an X-ray bulb for emitting X-rays for irradiating a scanned subject;
the CT detector is used for receiving the attenuated X-rays passing through the scanned person, converting the X-rays into analog electric signals and sending the analog electric signals to CT image acquisition equipment;
the CT image acquisition equipment comprises the CT image data transmission device of any one of claims 7-9, and is used for receiving the analog electric signals, converting the analog electric signals into digital signals to obtain CT image data, and transmitting the CT image data to a CT console through the CT image data transmission device;
and the CT console is used for receiving the CT image data.
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