CN109602436A - Scanning support rotary drive system - Google Patents
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- CN109602436A CN109602436A CN201811485065.4A CN201811485065A CN109602436A CN 109602436 A CN109602436 A CN 109602436A CN 201811485065 A CN201811485065 A CN 201811485065A CN 109602436 A CN109602436 A CN 109602436A
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- 239000000284 extract Substances 0.000 claims description 3
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- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computed tomography [CT]
- A61B6/032—Transmission computed tomography [CT]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computed tomography [CT]
- A61B6/032—Transmission computed tomography [CT]
- A61B6/035—Mechanical aspects of CT
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- A61B6/44—Constructional features of apparatus for radiation diagnosis
- A61B6/4429—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/52—Devices using data or image processing specially adapted for radiation diagnosis
- A61B6/5211—Devices using data or image processing specially adapted for radiation diagnosis involving processing of medical diagnostic data
- A61B6/5217—Devices using data or image processing specially adapted for radiation diagnosis involving processing of medical diagnostic data extracting a diagnostic or physiological parameter from medical diagnostic data
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Abstract
The present invention relates to a kind of scanning support rotary drive systems, it include: CT owner's body, including X-ray tube, collimator, detector, preamplifier and scanning support, the X-ray tube, the collimator, the detector and the preamplifier are all disposed on the scanning support, the collimator and the detector are located at the both ends of patient, the side of the separate patient of the collimator is arranged in the X-ray tube, the side of the separate patient of the detector is arranged in the preamplifier, the collimator is connect with the X-ray tube, the preamplifier is connect with the detector；Rotational driving device is connect with scanning support and objective identification equipment respectively, for maintaining signal to realize the rotation drive control to the scanning support based on the speed promotion signal received or speed.Through the invention, effective control to scanning support rotation driving is realized.
Description
Technical field
The present invention relates to CT machine field more particularly to a kind of scanning support rotary drive systems.
Background technique
CT is to be scanned with X-ray beam to the certain thickness level in human body portion, is received by detector and penetrates the level
X-ray, after being changed into visible light, electric signal is become from photoelectric conversion, then switch to number through analog/digital converter, input
Computer disposal.The processing that image is formed is divided into the identical cuboid of several volumes, referred to as voxel just like to selected level.
Scanning gained information is computed and obtains the x-ray attenuation coefficient or absorption coefficient of each voxel, rearranges into square
Battle array, i.e., character matrix, character matrix can be stored in disk or CD.Through digital/analog converter every in character matrix
A number switchs to by the black small cube to the white gray scales such as not, i.e. pixel, and is arranged in a matrix, i.e. composition CT image.So CT schemes
It seem reconstruction image.The X-ray absorption coefficient of each voxel can be calculated by different mathematical methods.
Summary of the invention
Technology to child patient or surrounding children's amount of radiation can not be adaptively reduced in order to solve CT machine in the prior art
Problem, the present invention provides a kind of scanning support rotary drive systems.
The present invention at least has following three important inventive points:
(1) using targetedly image procossing mechanism, identify patient to be detected be children or around there are when children,
The rotation speed of CT equipment is reduced, to reduce the amount of radiation to children's target；
(2) degeneracy parsing operation is carried out to edge enhanced images, and based on pixel each in edge enhanced images
Each pixel value carries out the parsing of degeneracy；
(3) in the case where degeneracy backlog demand, use image reconstruction device execute picture point as restoration disposal with
Obtain degeneracy current reconstruction image up to standard.
According to an aspect of the present invention, a kind of scanning support rotary drive system is provided, the system comprises:
CT owner's body, including X-ray tube, collimator, detector, preamplifier and scanning support, the X-ray tube, the standard
Straight device, the detector and the preamplifier are all disposed on the scanning support；Wherein, in the CT owner body, institute
It states collimator and the detector is located at the both ends of patient, the X-ray tube is arranged in the separate patient's of the collimator
Side.
More specifically, in the scanning support rotary drive system: in the CT owner body, the preamplifier is set
It sets in the side of the separate patient of the detector.
More specifically, in the scanning support rotary drive system: in the CT owner body, the collimator with it is described
X-ray tube connection, the preamplifier are connect with the detector.
More specifically, in the scanning support rotary drive system, further includes:
Rotational driving device is connect with scanning support and objective identification equipment respectively, for being promoted based on the speed received
Signal or speed maintain signal to realize the rotation drive control to the scanning support；Miniature video camera equipment is embedded in the scanning
In frame, for carrying out image pickup operation to environment where patient, to obtain corresponding patient environmental's image；Edge enhancing is set
It is standby, it is connect with the miniature video camera equipment, for receiving patient environmental's image, edge is executed to patient environmental's image
Enhancing processing, to obtain corresponding edge enhanced images；Degeneracy analyzing device connect with edge enhancing equipment, is used for
The edge enhanced images are received, degeneracy parsing operation is executed to the edge enhanced images, to obtain the edge enhancing
The degeneracy of image as reference degeneracy to export；In the degeneracy analyzing device, the edge enhanced images are held
Row degradation degree parsing operation, to obtain the degeneracy of the edge enhanced images to include: to obtain as the output of reference degeneracy
Each pixel value of each pixel in the edge enhanced images determines the side based on each pixel value of each pixel
Edge enhances the degeneracy of image and exports as described with reference to degeneracy；Parameter compares equipment, with the degeneracy analyzing device
Connection, it is described with reference to degeneracy for receiving, and be compared described with reference to degeneracy with degeneracy threshold value, in the ginseng
It when examining degeneracy less than or equal to the degeneracy threshold value, issues first and compares instruction, be greater than described move back with reference to degeneracy described
When change degree threshold value, issues second and compare instruction；Image reconstruction device compares equipment and the degeneracy solution with the parameter respectively
Desorption device connection, for executing picture point picture to the edge enhanced images and restoring when receiving the second comparison instruction
Processing, to obtain current reconstruction image, is also used to when receiving first control instruction, the edge enhanced images is made
For the output of current reconstruction image；Objective identification equipment is connect with described image reconstructing apparatus, for identifying the current reconstruction
There are when children's target in image, speed promotion signal is issued；Wherein, it in the objective identification equipment, is also used to identifying
When children's target being not present in the current reconstruction image, issues speed and maintain signal.
More specifically, in the scanning support rotary drive system: it is mono- in the parameter comparison equipment to be also built-in with RAM
Member, for storing the degeneracy threshold value.
More specifically, in the scanning support rotary drive system: described image reconstructing apparatus is by programmable logic device
It realizes, the programmable logic device designed using VHDL language.
More specifically, in the scanning support rotary drive system, further includes:
Image sharpening equipment is connect with the miniature video camera equipment, for receiving patient environmental's image, towards described
Patient environmental's image determines to the patient noise amplitude based on maximum amplitude noise type in patient environmental's image
The respective image sharpness that ambient image is implemented, to obtain instant sharpening image.
More specifically, in the scanning support rotary drive system, further includes:
Edge detection equipment sharpens equipment with described image and connect, and for receiving the instant sharpening image, is based on edge
Point tonal range extracts multiple edge pixel points from the instant sharpening image, intends the multiple edge pixel point
It closes, to obtain multiple edge lines.
More specifically, in the scanning support rotary drive system, further includes:
Distribution measurement apparatus enhances equipment with the edge respectively and the edge detection equipment is connect, for receiving
Instant sharpening image and the multiple edge line are stated, the signal-to-noise ratio based on the instant sharpening image schemes the instant sharpening
The edge line quantity in each subgraph is measured to obtain multiple subgraphs as carrying out uniform formula division, by edge line quantity
More than one or more subgraphs of preset quantity threshold value as one or more target subgraphs, and will be one or more of
Target subgraph integrally replaces patient environmental's image and is sent to the edge enhancing equipment.
More specifically, in the scanning support rotary drive system: in the edge detection equipment, based on marginal point ash
Spending range from multiple edge pixel points are extracted in the instant sharpening image includes: for each in the instant sharpening image
A pixel, determines whether its gray value falls in the marginal point tonal range, when falling in the marginal point tonal range, really
The fixed pixel is edge pixel point, is non-edge pixels point otherwise；Wherein, in the edge detection equipment, the side
Edge point tonal range is made of marginal point upper limit gray threshold and marginal point lower limit gray threshold.
Detailed description of the invention
Embodiment of the present invention is described below with reference to attached drawing, in which:
Fig. 1 is the structural schematic diagram according to the scanning support of the scanning support rotary drive system shown in embodiment of the present invention.
Specific embodiment
The embodiment of scanning support rotary drive system of the invention is described in detail below with reference to accompanying drawings.
CT English name ComputedTomography, i.e. CT scan, he is the x-ray using Accurate collimation
One by one disconnected is made at beam, gamma-rays, ultrasonic wave etc., a certain position that human body is surrounded together with the detector high with sensitivity
The features such as Surface scan has sweep time fast, image clearly, can be used for the inspection of a variety of diseases；Not according to used ray
It is same to be divided into: X ray CT (X-CT), ultrasound computed tomography (UCT) and gamma-rays CT (γ-CT) etc..
In order to overcome above-mentioned deficiency, the present invention has built a kind of scanning support rotary drive system, can effectively solve the problem that corresponding
The technical issues of.
Fig. 1 is the structural schematic diagram according to the scanning support of the scanning support rotary drive system shown in embodiment of the present invention.
Wherein, 1 is scanner, and 2 be frame body.
The scanning support rotary drive system shown according to an embodiment of the present invention includes:
CT owner's body, including X-ray tube, collimator, detector, preamplifier and scanning support, the X-ray tube, the standard
Straight device, the detector and the preamplifier are all disposed on the scanning support；
Wherein, in the CT owner body, the collimator and the detector are located at the both ends of patient, the X
The side of the separate patient of the collimator is arranged in spool.
Then, continue that the specific structure of scanning support rotary drive system of the invention is further detailed.
In the scanning support rotary drive system: in the CT owner body, the preamplifier is arranged described
The side of the separate patient of detector.
In the scanning support rotary drive system: in the CT owner body, the collimator and the X-ray tube connect
It connects, the preamplifier is connect with the detector.
In the scanning support rotary drive system, further includes:
Rotational driving device is connect with scanning support and objective identification equipment respectively, for being promoted based on the speed received
Signal or speed maintain signal to realize the rotation drive control to the scanning support；
Miniature video camera equipment is embedded in the scanning support, for carrying out image pickup operation to environment where patient, with
Obtain corresponding patient environmental's image；
Edge enhances equipment, connect with the miniature video camera equipment, for receiving patient environmental's image, to the trouble
Person's ambient image executes edge enhancing processing, to obtain corresponding edge enhanced images；
Degeneracy analyzing device is connect, for receiving the edge enhanced images, to described with edge enhancing equipment
Edge enhanced images execute degeneracy parsing operation, to obtain the degeneracies of the edge enhanced images using as reference degeneracy
Output；
In the degeneracy analyzing device, degeneracy parsing operation is executed to the edge enhanced images, to obtain
The degeneracy of edge enhanced images is stated to include: to obtain each pixel in the edge enhanced images as the output of reference degeneracy
Each pixel value of point, determines the degeneracy of the edge enhanced images and as institute based on each pixel value of each pixel
It states and is exported with reference to degeneracy；
Parameter compares equipment, connect with the degeneracy analyzing device, described with reference to degeneracy for receiving, and will be described
It is compared with reference to degeneracy with degeneracy threshold value, to send out when the reference degeneracy is less than or equal to the degeneracy threshold value
First instruction is compared out, when the reference degeneracy is greater than the degeneracy threshold value, issues second and compare instruction；
Image reconstruction device, compares equipment with the parameter respectively and the degeneracy analyzing device is connect, for connecing
When receiving the second comparison instruction, picture point is executed as restoration disposal, to obtain current reconstruction to the edge enhanced images
Image is also used to when receiving first control instruction, is exported the edge enhanced images as current reconstruction image；
Objective identification equipment is connect with described image reconstructing apparatus, for existing in identifying the current reconstruction image
When children's target, speed promotion signal is issued；
Wherein, it in the objective identification equipment, is also used to that children's mesh is not present in identifying the current reconstruction image
When mark, issues speed and maintain signal.
In the scanning support rotary drive system: ram cell is also built-in in the parameter comparison equipment, for depositing
Store up the degeneracy threshold value.
In the scanning support rotary drive system: described image reconstructing apparatus realized by programmable logic device, institute
Programmable logic device is stated using VHDL language to design.
In the scanning support rotary drive system, further includes:
Image sharpening equipment is connect with the miniature video camera equipment, for receiving patient environmental's image, towards described
Patient environmental's image determines to the patient noise amplitude based on maximum amplitude noise type in patient environmental's image
The respective image sharpness that ambient image is implemented, to obtain instant sharpening image.
In the scanning support rotary drive system, further includes:
Edge detection equipment sharpens equipment with described image and connect, and for receiving the instant sharpening image, is based on edge
Point tonal range extracts multiple edge pixel points from the instant sharpening image, intends the multiple edge pixel point
It closes, to obtain multiple edge lines.
In the scanning support rotary drive system, further includes:
Distribution measurement apparatus enhances equipment with the edge respectively and the edge detection equipment is connect, for receiving
Instant sharpening image and the multiple edge line are stated, the signal-to-noise ratio based on the instant sharpening image schemes the instant sharpening
The edge line quantity in each subgraph is measured to obtain multiple subgraphs as carrying out uniform formula division, by edge line quantity
More than one or more subgraphs of preset quantity threshold value as one or more target subgraphs, and will be one or more of
Target subgraph integrally replaces patient environmental's image and is sent to the edge enhancing equipment.
In the scanning support rotary drive system: in the edge detection equipment, based on marginal point tonal range from
It includes: for each of instant sharpening image pixel that multiple edge pixel points are extracted in the instant sharpening image
Point, determines whether its gray value falls in the marginal point tonal range, when falling in the marginal point tonal range, described in determination
Pixel is edge pixel point, is non-edge pixels point otherwise；
Wherein, in the edge detection equipment, the marginal point tonal range is by marginal point upper limit gray threshold and side
Edge point lower limit gray threshold composition.
In addition, VHDL is mainly used for describing the structure of digital display circuit, behavior, function and interface.In addition to containing there are many have
Outside the sentence of hardware characteristics, linguistic form, Description Style and the grammer of VHDL is to be sufficiently analogous to general computer advanced
Language.The program structure features of VHDL are that an engineering design or design entity (can be an element, a circuit
Module or a system) it is divided into external (or viewable portion and port) and inside (or not visible part), both it is related to entity
Built-in function and algorithm complete part.After defining outer interface to a design entity, once its internal exploitation is completed
Afterwards, other designs can call directly this entity.This concept that design entity is divided into internal and external parts is VHDL system
The basic point for design of uniting.
VHDL has powerful language construction, can describe complicated logic control with succinct specific source code
System.He has multi-level design representation function, refines layer by layer, can finally directly generate circuit-level description.VHDL supports to synchronize
The design of circuit, asynchronous circuit and stochastic circuit, this is that other hardware description languages cannot compare.VHDL also supports various
Design method had not only supported bottom-up design, but also has supported top-down design；Not only support moduleization designed, but also support layer
Secondaryization design.
Using scanning support rotary drive system of the invention, can not adaptively be reduced to children for CT machine in the prior art
Patient or the technical issues of surrounding children's amount of radiation, by using targetedly image procossing mechanism, is identifying trouble to be detected
Person is children or surrounding there are when children, the rotation speed of CT equipment is reduced, to reduce the amount of radiation to children's target；To edge
Enhance image and carry out degeneracy parsing operation, and each pixel value based on pixel each in edge enhanced images is degenerated
The parsing of degree；And in the case where degeneracy backlog demand, picture point is executed as restoration disposal using image reconstruction device
To obtain degeneracy current reconstruction image up to standard.
It is understood that although the present invention has been disclosed in the preferred embodiments as above, above-described embodiment not to
Limit the present invention.For any person skilled in the art, without departing from the scope of the technical proposal of the invention,
Many possible changes and modifications all are made to technical solution of the present invention using the technology contents of the disclosure above, or are revised as
With the equivalent embodiment of variation.Therefore, anything that does not depart from the technical scheme of the invention are right according to the technical essence of the invention
Any simple modifications, equivalents, and modifications made for any of the above embodiments still fall within the range of technical solution of the present invention protection
It is interior.
Claims (10)
1. a kind of scanning support rotary drive system characterized by comprising
CT owner's body, including X-ray tube, collimator, detector, preamplifier and scanning support, the X-ray tube, the collimator,
The detector and the preamplifier are all disposed on the scanning support；
Wherein, in the CT owner body, the collimator and the detector are located at the both ends of patient, the X-ray tube
The side of the separate patient of the collimator is set.
2. scanning support rotary drive system as described in claim 1, it is characterised in that:
In the CT owner body, the side of the separate patient of the detector is arranged in the preamplifier.
3. scanning support rotary drive system as claimed in claim 2, it is characterised in that:
In the CT owner body, the collimator is connect with the X-ray tube, and the preamplifier and the detector connect
It connects.
4. scanning support rotary drive system as claimed in claim 3, which is characterized in that the system also includes:
Rotational driving device is connect with scanning support and objective identification equipment respectively, for based on the speed promotion signal received
Or speed maintains signal to realize the rotation drive control to the scanning support；
Miniature video camera equipment is embedded in the scanning support, for carrying out image pickup operation to environment where patient, to obtain
Corresponding patient environmental's image；
Edge enhances equipment, connect with the miniature video camera equipment, for receiving patient environmental's image, to patient's ring
Border image executes edge enhancing processing, to obtain corresponding edge enhanced images；
Degeneracy analyzing device is connect, for receiving the edge enhanced images, to the edge with edge enhancing equipment
Enhance image and execute degeneracy parsing operation, to obtain the degeneracies of the edge enhanced images using defeated as reference degeneracy
Out；
In the degeneracy analyzing device, degeneracy parsing operation is executed to the edge enhanced images, to obtain the side
The degeneracy of edge enhancing image is to include: to obtain each pixel in the edge enhanced images as the output of reference degeneracy
Each pixel value determines the degeneracy of the edge enhanced images and as the ginseng based on each pixel value of each pixel
Examine degeneracy output；
Parameter compares equipment, connect with the degeneracy analyzing device, for receive it is described refer to degeneracy, and by the reference
Degeneracy is compared with degeneracy threshold value, with it is described be less than or equal to the degeneracy threshold value with reference to degeneracy when, issue the
One compares instruction, when the reference degeneracy is greater than the degeneracy threshold value, issues second and compares instruction；
Image reconstruction device, compares equipment with the parameter respectively and the degeneracy analyzing device is connect, for receiving
When the second comparison instruction, to edge enhanced images execution picture point as restoration disposal, to obtain current reconstruction image,
It is also used to when receiving first control instruction, is exported the edge enhanced images as current reconstruction image；
Objective identification equipment is connect with described image reconstructing apparatus, for there are children in identifying the current reconstruction image
When target, speed promotion signal is issued；
Wherein, in the objective identification equipment, when being also used to that children's target is not present in identifying the current reconstruction image,
It issues speed and maintains signal.
5. scanning support rotary drive system as claimed in claim 4, it is characterised in that:
It is also built-in with ram cell in the parameter comparison equipment, for storing the degeneracy threshold value.
6. scanning support rotary drive system as claimed in claim 5, it is characterised in that:
Described image reconstructing apparatus is realized that the programmable logic device is set using VHDL language by programmable logic device
Meter.
7. scanning support rotary drive system as claimed in claim 6, which is characterized in that the system also includes:
Image sharpening equipment is connect with the miniature video camera equipment, for receiving patient environmental's image, towards the patient
Ambient image determines to the patient environmental noise amplitude based on maximum amplitude noise type in patient environmental's image
The respective image sharpness that image is implemented, to obtain instant sharpening image.
8. scanning support rotary drive system as claimed in claim 7, which is characterized in that the system also includes:
Edge detection equipment sharpens equipment with described image and connect, for receiving the instant sharpening image, based on marginal point ash
Degree range extracts multiple edge pixel points from the instant sharpening image, is fitted to the multiple edge pixel point, with
Obtain multiple edge lines.
9. scanning support rotary drive system as claimed in claim 8, which is characterized in that the system also includes:
Distribution measurement apparatus enhances equipment and the edge detection equipment with the edge respectively and connect, for described in receiving i.e.
When sharpening image and the multiple edge line, the signal-to-noise ratio based on the instant sharpening image to the instant sharpening image into
The uniform formula of row divides, and to obtain multiple subgraphs, measures the edge line quantity in each subgraph, is more than by edge line quantity
One or more subgraphs of preset quantity threshold value are as one or more target subgraphs, and by one or more of targets
Subgraph integrally replaces patient environmental's image and is sent to the edge enhancing equipment.
10. scanning support rotary drive system as claimed in claim 9, it is characterised in that:
In the edge detection equipment, multiple edge pictures are extracted from the instant sharpening image based on marginal point tonal range
Vegetarian refreshments includes: to determine whether its gray value falls in the marginal point for each of instant sharpening image pixel
In tonal range, when falling in the marginal point tonal range, determines that the pixel is edge pixel point, be non-edge otherwise
Pixel；
Wherein, in the edge detection equipment, the marginal point tonal range is by marginal point upper limit gray threshold and marginal point
Lower limit gray threshold composition.
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| CN201811485065.4A CN109602436A (en) | 2018-12-06 | 2018-12-06 | Scanning support rotary drive system |
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| CN107049353A (en) * | 2017-05-12 | 2017-08-18 | 东北大学 | A kind of reduced form CT imaging systems |
| CN107157504A (en) * | 2017-05-31 | 2017-09-15 | 上海联影医疗科技有限公司 | A kind of control method of CT scan |
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2018
- 2018-12-06 CN CN201811485065.4A patent/CN109602436A/en not_active Withdrawn
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| CN101292269A (en) * | 2005-09-26 | 2008-10-22 | 皇家飞利浦电子股份有限公司 | Iterative reconstruction with enhanced noise control filtering |
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| US20160113602A1 (en) * | 2014-10-27 | 2016-04-28 | Rensselaer Polytechnic Institute | Dynamic bowtie filter for cone-beam/multi-slice ct |
| CN105704472A (en) * | 2016-01-13 | 2016-06-22 | 青岛海信电器股份有限公司 | Television control method capable of identifying child user and system thereof |
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| CN107157504A (en) * | 2017-05-31 | 2017-09-15 | 上海联影医疗科技有限公司 | A kind of control method of CT scan |
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