CN112820383B - Medical imaging method, system and storage medium - Google Patents
Medical imaging method, system and storage medium Download PDFInfo
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- CN112820383B CN112820383B CN201911124198.3A CN201911124198A CN112820383B CN 112820383 B CN112820383 B CN 112820383B CN 201911124198 A CN201911124198 A CN 201911124198A CN 112820383 B CN112820383 B CN 112820383B
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Abstract
The embodiment of the invention discloses a medical imaging method, a medical imaging system and a storage medium, wherein the medical imaging method comprises the following steps: determining a template image corresponding to a current subject, wherein the image effect of the template image is an image effect corresponding to a scanning protocol parameter expected by a user; taking the scanning protocol parameters corresponding to the template image as the scanning protocol parameters of the current testee; and controlling the scanning device to complete imaging scanning of the current subject according to the determined scanning protocol parameters so as to obtain a target image of the current subject. The method solves the problem of low accuracy in the scanning protocol parameter selection in the prior art, and achieves the technical effect of improving the speed and accuracy of the scanning protocol parameter configuration.
Description
Technical Field
The embodiment of the invention relates to the field of medical imaging, in particular to a medical imaging method, a medical imaging system and a storage medium.
Background
In many cases, clinical diagnosis by a doctor requires the acquisition of medical images in a specific scanning manner depending on the medical image and also on the specific imaging apparatus. To meet this requirement, the prior art generally requires a physician to empirically select an appropriate combination of parameters among the hundreds of scan protocol parameters to optimize the scan protocol parameters, which can take a long time. However, since many doctors are not aware of the scan results corresponding to the various scan protocol parameters, only the common scan protocol parameters are generally selected, and not the appropriate scan protocol parameters.
It can be seen that the scan protocol parameter selection in the prior art has at least the problem of lower accuracy.
Disclosure of Invention
The embodiment of the invention provides a medical imaging method, a medical imaging system and a storage medium, which are used for solving the problem that the scanning protocol parameter selection in the prior art is at least low in accuracy.
In a first aspect, an embodiment of the present invention provides a medical imaging method, including:
determining a template image corresponding to a current subject, wherein the image effect of the template image is an image effect corresponding to a scanning protocol parameter expected by a user;
taking the scanning protocol parameters corresponding to the template image as the scanning protocol parameters of the current testee;
and controlling the scanning device to complete imaging scanning of the current subject according to the determined scanning protocol parameters so as to obtain a target image of the current subject.
In a second aspect, an embodiment of the present invention further provides a magnetic resonance imaging system, including:
a scanning bed for carrying a current subject;
a scanning device for scanning a scanning site of a current subject;
the processor is used for determining a template image corresponding to the current subject; taking the scanning protocol parameters corresponding to the template image as the scanning protocol parameters of the current testee; and controlling the scanning device to complete imaging scanning of the current subject on the scanning bed according to the determined scanning protocol parameters so as to obtain a target image of the current subject, wherein the image effect of the template image is an image effect corresponding to the scanning protocol parameters expected by a user.
In a third aspect, embodiments of the present invention also provide a storage medium containing computer-executable instructions for performing the medical imaging method according to any of the embodiments, when executed by a computer processor.
The technical scheme of the medical imaging method provided by the embodiment of the invention comprises the steps of determining a template image corresponding to a current subject, wherein the image effect of the template image is an image effect corresponding to a scanning protocol parameter expected by a user; taking the scanning protocol parameters corresponding to the template image as the scanning protocol parameters of the current subject, so that a user selects the scanning protocol parameters by selecting the template image with the expected image effect, and each parameter does not need to be manually configured one by the user; and controlling the scanning device to complete imaging scanning of the current subject according to the determined scanning protocol parameters so as to obtain a target image of the current subject. The method can enable the user to obtain the target image with the expected image effect, and enable the user to directly complete the configuration of the scanning protocol parameters without manually configuring each parameter one by one, thereby achieving the technical effect of improving the speed and the accuracy of the configuration of the scanning protocol parameters and having higher clinical popularization value.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a medical imaging method provided in accordance with a first embodiment of the present invention;
FIG. 2A is a schematic diagram of a configuration interface according to a second embodiment of the present invention;
FIG. 2B is a schematic diagram of a configuration interface according to a second embodiment of the present invention;
FIG. 3 is a flow chart of a positioning data packet for determining a current subject according to a second embodiment of the present invention;
FIG. 4 is a diagram of a scan data packet according to a second embodiment of the present invention;
FIG. 5 is a diagram illustrating the adjustment of the calibration positioning image of the subject and the positioning image in the positioning data packet according to the second embodiment of the present invention;
FIG. 6 is a schematic diagram of a matching result presented by a scan interface according to a second embodiment of the present invention;
fig. 7 is a block diagram of a medical imaging apparatus according to a third embodiment of the present invention;
fig. 8 is a schematic diagram of a medical imaging system according to a fourth embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described by means of implementation examples with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Fig. 1 is a flowchart of a medical imaging method according to an embodiment of the present invention. The technical scheme of the embodiment is suitable for the situation that the scanning protocol parameters of the medical imaging system are determined through the template image. The medical imaging system may be magnetic resonance, CT (Computed Tomography, CT for short), positron emission tomography (Positron Emission Computed Tomography, PET for short), X-ray imaging equipment, etc., and the template image is a corresponding magnetic resonance template image, PET image, CT image, DR (Digital Radiography, DR) image, etc. The method may be performed by a medical imaging apparatus provided by an embodiment of the present invention, which may be implemented in software and/or hardware and configured for application in a processor of a medical imaging system. The method specifically comprises the following steps:
s101, determining a template image corresponding to the current subject.
The template image corresponds to the scanning protocol parameters, and the scanning protocol parameters at least comprise the combination of all parameters required by the configuration of the scanning device for completing the imaging scanning of the scanning part.
The template image is used for showing the scanning effect of the corresponding scanning device for scanning the appointed scanning part of the current subject by using the corresponding scanning protocol parameters. A historical scan image of a specified scan site obtained based on a preset scan protocol parameter may be employed as a template image of the specified scan site corresponding to the preset scan protocol parameter. It can be appreciated that the template image has a one-to-one correspondence with the preset scan protocol parameters.
The scanning device can be a scanning device of a magnetic resonance imaging system, a scanning device of a CT imaging system and the like. Taking the scanning device as an example of a scanning device of the magnetic resonance imaging system, the template image is a magnetic resonance image, and the scanning protocol parameters preferably comprise scanning sequence parameters and magnetic resonance image reconstruction parameters. The magnetic resonance image reconstruction parameters comprise an image reconstruction method, an image preprocessing method and the like adopted by magnetic resonance image reconstruction.
In order to more intuitively show the scanning results corresponding to different scanning protocol parameters to the user, in this embodiment, a plurality of template images are established or matched for each scanning position, and different template images correspond to different scanning protocol parameters. In order to quickly determine the scanning protocol parameters corresponding to each template image, a corresponding relationship between the template images and the scanning protocol parameters is also established. Specifically, the corresponding relation between the image identification of the template image and the scanning protocol parameter is recorded in the mapping table.
It will be appreciated that the imaging system typically has received scan site information for the current subject when the user determines scan protocol parameters for the current subject. Thus, after the user inputs the scanning protocol request information through the input device, the imaging system can determine the scanning position of the current subject according to the scanning position information, a plurality of candidate template images are matched for the current subject according to the determined scanning position and the received scanning protocol request information, and the scanning protocol parameters of each candidate template image are different. The imaging system presents the candidate template image 152 to the user via the configuration interface 151 of the output device (see fig. 2A). After browsing, the user inputs image selection information through the input device, so that the imaging system determines a candidate template image selected by the user according to the image selection information, and takes the candidate template image as a template image of the current subject. The scan region information is a positioning image 153 including a scan region 1531 that has been selected by the user for the current subject, as shown in fig. 2B. The image selection information may be a selection operation of a user's click, touch, or the like on the selected candidate template image.
It can be understood that if the user is familiar with the image identifier of the template image corresponding to the common scan protocol parameter, after determining the scan position of the current subject, the image identifier of the required template image is directly input through the input device, the imaging system searches the database storing the template image according to the image identifier after receiving the image identifier input by the user, and then takes the search result as the template image corresponding to the current subject.
In one embodiment, registration information of the current subject, which may be personal information as well as organ information to be imaged, is typically registered in a console computer of the magnetic resonance imaging system before the current subject is ready for scanning. The local database of the magnetic resonance imaging system and the database of the server end store history information, the history information can be history scanning data or history registration information, and the magnetic resonance imaging system can calculate the matching degree of the registration information of the current subject and the history information in the database; if the registration information of the current subject is completely matched with the history information in the database, directly giving a recommended template image in the display, wherein the template image corresponds to the history information in the matched database; if the registration information of the current subject does not completely match the history information in the database, a plurality of recommended template images are output according to the level of the matching degree.
Of course, there may not be a scan data packet matching the registration information of the current subject in the history information of the database, and a corresponding scan data packet needs to be established based on the scan data of the current subject, where the scan data packet includes at least a positioning data packet and a registration data packet. Wherein the registration information or the history information in the database may comprise: personal information of the patient (name, sex, identification number, etc.), the site to be scanned (heart, head, etc.), the position of the patient's bed after the current subject enters the patient's aperture, scanning a calibration image (coronal plane) at this position for confirming the position or location information of the patient relative to the bed, the sequence used for the subsequent scan, and the corresponding location position.
Taking the positioning data packet of the current subject as an example, as shown in fig. 3, acquiring basic information of the current subject, searching a positioning data packet matched with the basic information of the current subject in a local database and a server-side database, if so, determining whether the scanning position of the current subject is the same as the scanning position in the searched positioning data packet, if so, scanning a calibration positioning image of the current subject, matching the calibration positioning image with the positioning image in the positioning data packet, determining a protocol to be scanned according to the matching result, if the protocol to be scanned is consistent with the scanning protocol corresponding to the positioning data packet, directly performing imaging scanning on the current subject by using the protocol to be scanned, and if not, acquiring the positioning image of the current subject according to a conventional magnetic resonance scanning flow to update the positioning data packet of the current subject. If no locating data packet matched with the basic information of the current subject is searched in the local database and the server-side database or the locating data packet matched with the basic information of the current subject is searched, but the scanning position corresponding to the locating data packet is different from the scanning position of the current subject, the sickbed position of the current subject is recorded, a calibration locating image is scanned for the current subject, and then the locating image of the current subject containing the scanning position is obtained according to the conventional magnetic resonance scanning flow, so that the locating data packet of the current subject is established and stored.
Illustratively, the current subject's positioning information matches the positioning information in the positioning data packet, but the scan location is different from the scan location in the positioning data packet, when the positioning data packet in the scan data packet is created: 1) Registering personal information of the patient and the scanned part; 2) After a patient is led into a patient aperture, a positioning image of a pair of coronal surfaces is scanned by using a positioning sequence recommended by a database to be used as a calibration positioning image, and the calibration positioning image and the sickbed position are recorded; 3) The follow-up scanning is carried out in a common nuclear magnetic resonance scanning flow, and an executed sequence protocol and corresponding scanning position coordinates are recorded in the scanning process; then, in the local client, the information recorded in the foregoing 1), 2) and 3) is organized according to the same structure, and then stored in a local patient positioning database of the magnetic resonance system, and uploaded into the data of the server through the network, as shown in fig. 4.
Illustratively, the positioning information of the current subject does not match the positioning information of the searched positioning data packet, but the scanning location of the current subject is the same as the scanning location in the positioning data packet, when the positioning data packet in the scanning data packet is established: 1) Scanning a pair of alignment positioning images of the coronal plane; 2) Comparing the calibration positioning image of the current scanning with the positioning image in the positioning data packet; 3) And adjusting the position of the sickbed according to the comparison result to ensure that the position of the detected person is completely consistent relative to the center of the magnet during two scans. Alternatively, the comparison method can be performed both manually and automatically. As shown in fig. 5, the two images are led into the magnetic resonance man-machine interaction interface, the calibration positioning image of this time is adjusted through translation operation to be consistent with the positioning image in the positioning data packet, and the sickbed can be automatically adjusted in a linkage manner in the adjustment process.
In one embodiment, the database stores the historical scanning protocol, the historical scanning positioning image and the template image corresponding to the historical scanning protocol, and the positioning image (the outline image of the patient scanning) of the patient can be obtained first, the positioning image of the current patient is matched with the historical scanning positioning image, and the template images corresponding to the historical scanning protocols with higher matching degree are directly displayed in the display. Fig. 6 shows 18 template images matched according to the positioning image of the patient, and representative images of each template image, so that the user selects a desired template image, each corresponding to a scanning protocol, as desired. Preferably, the user can select a desired template image from the representative image of each template image displayed, and select the template image through the input means to view other images in the target image. The scanning protocol may be an FID sequence including a partial saturation sequence, a spin echo sequence including a spin echo and a fast spin echo, a gradient echo sequence including a normal gradient echo sequence, a phase-disturbing gradient echo sequence, a steady-state precession imaging sequence, a hybrid sequence formed by a fast spin gradient echo and a plane echo imaging sequence, and the like. Wherein, the table from left to right in the first row in fig. 6 represents: template images of a positioning protocol, template images of a time-fly-over blood vessel imaging (time of flight MR angiography, TOF-MRA) scanning protocol, template images of a blood vessel three-dimensional contrast enhancement scanning protocol, template images of a T1WI protocol, template images of a T2-FLAIR (liquid attenuation inversion recovery) protocol, and diffusion weighted (diffusion weighted, DW) protocol template images with b value of 0, diffusion weighted (diffusion weighted, DW) protocol template images with b value of 1000, apparent diffusion coefficient template images, and the like, wherein numbers in the figures represent the serial numbers of template images currently displayed in a dataset corresponding to the type of scanning protocol in a database. The user can click the corresponding template image according to clinical requirements, and the magnetic resonance system can execute the corresponding scanning protocol according to the selected template image.
The matching mode of the positioning image of the current subject and the positioning image in the database comprises the following steps: dividing the positioning image of the current subject and the positioning image in the database respectively to generate a plurality of sub-images; feature extraction is carried out on sub-images of the positioning image of the current patient to construct a feature vector of the current subject; feature extraction is carried out on sub-images of the positioning images in the database so as to construct a historical feature vector set; and calculating the similarity between the characteristic vector of the current subject and the elements in the history characteristic vector set to obtain the matching degree of the positioning image of the current subject and the positioning image in the database.
S102, taking the scanning protocol parameters corresponding to the template image as the scanning protocol parameters of the current subject.
After the template image is determined, the scanning protocol parameters corresponding to the image identification of the template image can be determined according to the image identification of the template image and the mapping table storing the image identification and the scanning protocol parameters, and the determined scanning protocol parameters are used as the scanning protocol parameters of the scanning part of the current subject.
S103, controlling the scanning device to complete imaging scanning of the current subject according to the determined scanning protocol parameters so as to obtain a target image of the current subject.
And after receiving a scanning signal input by a user, the imaging system controls the scanning device to complete imaging scanning of the current subject according to the determined scanning protocol parameters so as to obtain a target image of the current subject.
The technical scheme of the medical imaging method provided by the embodiment of the invention comprises the steps of determining a template image corresponding to a current subject, wherein the image effect of the template image is an image effect corresponding to a scanning protocol parameter expected by a user; taking the scanning protocol parameters corresponding to the template image as the scanning protocol parameters of the current subject, so that a user selects the scanning protocol parameters by selecting the template image with the expected image effect, and each parameter does not need to be manually configured one by the user; and controlling the scanning device to complete imaging scanning of the current subject according to the determined scanning protocol parameters so as to obtain a target image of the current subject. The method can enable the user to obtain the target image with the expected image effect, and enable the user to directly complete the configuration of the scanning protocol parameters without manually configuring each parameter one by one, thereby achieving the technical effect of improving the speed and the accuracy of the configuration of the scanning protocol parameters and having higher clinical popularization value.
Example two
Fig. 7 is a block diagram of a magnetic resonance imaging apparatus according to a second embodiment of the present invention. The apparatus is for performing the medical imaging method provided in any of the embodiments described above, the apparatus being implemented in software or hardware. As shown in fig. 7, the apparatus includes:
a template image determining module 21, configured to determine a template image corresponding to the current subject, where an image effect of the template image is an image effect corresponding to a scan protocol parameter expected by a user;
the scan protocol parameter determining module 22 is configured to take a scan protocol parameter corresponding to the template image as a scan protocol parameter of the current subject;
the scanning module 23 is configured to control the scanning device to complete the imaging scanning of the current subject according to the determined scanning protocol parameter, so as to obtain the target image of the current subject.
The template image determining module 21 is specifically configured to receive scan location information and scan protocol request information of a current subject; matching a plurality of candidate template images for the current patient according to the scanning part in the scanning part information and the scanning protocol request information, wherein each candidate template image corresponds to different scanning protocol parameters; and receiving image selection information of a user, and taking a candidate template image corresponding to the image selection information as a template image matched with the current subject.
The scan protocol parameter determining module 22 is specifically configured to determine a scan protocol parameter corresponding to an image identifier of a template image according to the image identifier of the template image and a mapping table storing the image identifier and the scan protocol parameter; the determined scan protocol parameters are used as scan protocol parameters of the current subject.
The template image determining module 21 is specifically configured to receive an image identifier of a template image input by a user; searching a template image in a database storing the template image according to the image identification; and taking the search result as a template image corresponding to the current subject.
According to the technical scheme of the medical imaging device, the template image corresponding to the current subject is determined through the template image determining module, wherein the image effect of the template image is the image effect corresponding to the scanning protocol parameter expected by the user; the scanning protocol parameters corresponding to the template images are used as the scanning protocol parameters of the current testee through the scanning protocol parameter determining module, so that a user selects the scanning protocol parameters by selecting the template images with expected image effects, and each parameter does not need to be manually configured one by the user; and controlling the scanning device to complete imaging scanning of the current subject by the scanning module according to the determined scanning protocol parameters so as to obtain a target image of the current subject. The method can enable the user to obtain the target image with the expected image effect, and enable the user to directly complete the configuration of the scanning protocol parameters without manually configuring each parameter one by one, thereby achieving the technical effect of improving the speed and the accuracy of the configuration of the scanning protocol parameters and having higher clinical popularization value.
The medical imaging device provided by the embodiment of the invention can execute the medical imaging method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.
Example III
Fig. 8 is a schematic structural diagram of a magnetic resonance imaging system according to a third embodiment of the present invention. As shown in fig. 8, the system includes a scanner bed 111, a scanner 110, and a processor 120, the scanner bed 111 for carrying a patient; the scanning device 110 is used for scanning a scanning part of a current subject; the processor 120 is configured to determine a template image corresponding to the current subject; taking the scanning protocol parameters corresponding to the template image as the scanning protocol parameters of the current subject; the scanning device 1101 is controlled to complete the imaging scanning of the current subject on the scanning bed 111 according to the determined scanning protocol parameters, so as to obtain the target image of the current subject, wherein the image effect of the template image is the image effect corresponding to the scanning protocol parameters expected by the user.
The scan protocol parameters at least comprise the combination of all parameters required by the scan device to complete the scan of the scan part.
The template image is used for showing the scanning effect of the corresponding scanning device for scanning the appointed scanning part of the current subject by using the corresponding scanning protocol parameters. A historical scan image of a specified scan site obtained based on a preset scan protocol parameter may be employed as a template image of the specified scan site corresponding to the preset scan protocol parameter. It can be appreciated that the template image has a one-to-one correspondence with the preset scan protocol parameters.
The scanning device may be a scanning device of a magnetic resonance imaging system, a scanning device of a CT imaging system, or the like. Taking the scanning device as an example of a scanning device of the magnetic resonance imaging system, the template image is a magnetic resonance image, and the scanning protocol parameters preferably comprise scanning sequence parameters and magnetic resonance image reconstruction parameters. The magnetic resonance image reconstruction parameters comprise an image reconstruction method, an image preprocessing method and the like adopted by magnetic resonance image reconstruction.
It can be understood that the same imaging device is used to perform imaging scanning on the same scanning part of the same subject in a preset time period by adopting different scanning protocol parameters, and the obtained scanning results are different, and the scanning protocol parameters and the scanning results are in one-to-one correspondence. The preset time period in this embodiment is a time period in which the medical scanning area is not significantly changed.
The embodiment also comprises a memory which stores a database, wherein the database comprises template images of a plurality of scanning parts, and a mapping table which records the corresponding relation between each template image and the scanning protocol parameters of the template images. Each scanning part corresponds to a plurality of template images, and the scanning protocol parameters corresponding to different template images of the same scanning part are different.
It will be appreciated that the processor typically has received scan site information for the current subject when the user determines scan protocol parameters for the current subject. Thus, after the user inputs the scan protocol request information through the input device 140, the processor can determine the scan position of the current subject according to the scan position information, and match a plurality of candidate template images for the current subject according to the determined scan position and the received scan protocol request information, and the scan protocol parameters of each candidate template image are different. The processor 120 outputs the candidate template image for viewing by the user via the output device 150. The user may input image selection information through the input device 140 after browsing, so that the processor determines a candidate template image selected by the user according to the image selection information, and takes the candidate template image as a template image of the current subject. The scan region information is a scout image including a scan region that has been selected by the user for the current subject. The image selection information is a selection operation such as clicking, touching, or the like by the user on the selected candidate template image.
It will be appreciated that if the user is familiar with the image identifier of the template image corresponding to the common scan protocol parameter, after determining the scan location of the current subject, the image identifier of the required template image is directly input through the input device 140, and after receiving the image identifier input by the user, the processor searches the database storing the template image according to the image identifier, and then uses the search result as the template image corresponding to the current subject.
After the processor receives the determining information of the template image, the user can determine the scanning protocol parameter corresponding to the image identification of the template image according to the image identification of the template image and the mapping table storing the image identification and the scanning protocol parameter, and the determined scanning protocol parameter is used as the scanning protocol parameter of the scanning part of the current subject.
After the scan protocol parameters are determined, the processor controls the scanning device to complete imaging scanning of the current subject according to the determined scan protocol parameters after receiving the scan signals input by the user, so as to obtain a target image of the current subject.
As shown in fig. 8, the magnetic resonance imaging system 100 further comprises a controller 130, wherein the controller 130 can monitor or control the scanning device 110, the processor 120 and the output device 150 simultaneously. The controller 130 may include one or a combination of several of a central processing unit (Central Processing Unit, CPU), application-specific integrated circuit (ASIC), application-specific instruction processor (Application Specific Instruction Set Processor, ASIP), graphics processing unit (Graphics Processing Unit, GPU), physical processor (Physics Processing Unit, PPU), digital signal processor (Digital Processing Processor, DSP), field-programmable gate array (Field-Programmable Gate Array, FPGA), ARM processor, etc.
The output device 150, such as a display, may also display the height, weight, age of the subject, and the operating status of the scanning device 110, among others. The type of the output device 150 may be one or a combination of several of a Cathode Ray Tube (CRT) output device, a liquid crystal output device (LCD), an organic light emitting output device (OLED), a plasma output device, etc.
The magnetic resonance imaging system 100 may be connected to a local area network (Local Area Network, LAN), wide area network (Wide Area Network, WAN), public network, private network, proprietary network, public switched telephone network (Public Switched Telephone Network, PSTN), the internet, wireless network, virtual network, or any combination thereof.
The scanning device 110 comprises an MR signal acquisition module, an MR control module and an MR data storage module. The MR signal acquisition module comprises a magnet unit and a radio frequency unit. The magnet unit mainly includes a main magnet generating a B0 main magnetic field and a gradient assembly generating a gradient. The main magnet contained in the magnet unit may be a permanent magnet or a superconducting magnet, the gradient assembly mainly comprises gradient current Amplifiers (AMPs), gradient coils, and the gradient assembly may further comprise three independent channels Gx, gy, gz, each gradient amplifier exciting a corresponding one of the gradient coils in the gradient coil set to generate gradient fields for generating corresponding spatially encoded signals for spatially localization of the magnetic resonance signals. The radio frequency unit mainly comprises a radio frequency transmitting coil and a radio frequency receiving coil, wherein the radio frequency transmitting coil is used for transmitting radio frequency pulse signals to a person to be detected or a human body, the radio frequency receiving coil is used for receiving magnetic resonance signals acquired from the human body, and the radio frequency coils forming the radio frequency unit can be divided into a body coil and a local coil according to different functions. In one embodiment, the type of body coil or local coil may be a birdcage coil, a solenoid coil, a saddle coil, a helmholtz coil, an array coil, a loop coil, or the like. In one particular embodiment, the local coils are provided as array coils, and the array coils may be provided in a 4-channel mode, an 8-channel mode, or a 16-channel mode. The magnet unit and the radio frequency unit may constitute an open low field magnetic resonance device or a closed superconducting magnetic resonance device.
The MR control module may monitor an MR signal acquisition module, an MR data processing module, comprising a magnet unit and a radio frequency unit. Specifically, the MR control module may receive the information or pulse parameters sent by the MR signal acquisition module; in addition, the MR control module can also control the processing procedure of the MR data processing module. In one embodiment, the MR control module is further connected to a pulse sequence generator, a gradient waveform generator, a transmitter, a receiver, etc., and controls the magnetic field module to execute a corresponding scanning sequence after receiving instructions from the console.
Illustratively, the specific process of generating MR data by the scanning device 110 of the present invention includes: the main magnet generates a B0 main magnetic field, and atomic nuclei in the subject generate precession frequency under the action of the main magnetic field, wherein the precession frequency is in direct proportion to the intensity of the main magnetic field; the MR control module stores and transmits an instruction of a scan sequence to be executed, the pulse sequence generator controls the gradient waveform generator and the transmitter according to the scan sequence instruction, the gradient waveform generator outputs gradient pulse signals with preset time sequences and waveforms, the signals pass through Gx, gy and Gz gradient current amplifiers, and then pass through three independent channels Gx, gy and Gz in the gradient assembly, and each gradient amplifier excites a corresponding gradient coil in the gradient coil group to generate a gradient field for generating corresponding spatial coding signals so as to spatially locate magnetic resonance signals; the pulse sequence generator also executes a scanning sequence, outputs data including timing, intensity, shape and the like of radio frequency pulses transmitted by radio frequency, timing of radio frequency reception and length of a data acquisition window to the transmitter, simultaneously the transmitter transmits corresponding radio frequency pulses to a body transmitting coil in the radio frequency unit to generate a B1 field, signals emitted by excited atomic nuclei in a patient body under the action of the B1 field are perceived by a receiving coil in the radio frequency unit, and then transmitted to an MR data processing module through a transmitting/receiving switch, and is subjected to digital processing such as amplification, demodulation, filtering, AD conversion and the like, and then transmitted to an MR data storage module. The scan is completed when the MR data storage module acquires a set of raw k-space data. The raw k-space data is rearranged into separate k-space data sets corresponding to each image to be reconstructed, each k-space data set is input to an array processor for image reconstruction and combined with magnetic resonance signals to form a set of image data.
Example IV
A fourth embodiment of the present invention also provides a storage medium containing computer-executable instructions, which when executed by a computer processor, are for performing a medical imaging method, the method comprising:
determining a template image corresponding to a current subject, wherein the image effect of the template image is an image effect corresponding to a scanning protocol parameter expected by a user;
taking the scanning protocol parameters corresponding to the template image as the scanning protocol parameters of the current testee;
and controlling the scanning device to complete imaging scanning of the current subject according to the determined scanning protocol parameters so as to obtain a target image of the current subject.
Of course, the storage medium containing computer-executable instructions provided in the embodiments of the present invention is not limited to the method operations described above, but may also perform related operations in the medical imaging method provided in any of the embodiments of the present invention.
From the above description of embodiments, it will be clear to a person skilled in the art that the present invention may be implemented by means of software and necessary general purpose hardware, but of course also by means of hardware, although in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, etc., and include several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the medical imaging method according to the embodiments of the present invention.
It should be noted that, in the above embodiment of the medical imaging apparatus, each unit and module included are only divided according to the functional logic, but are not limited to the above division, so long as the corresponding functions can be implemented; in addition, the specific names of the functional units are also only for distinguishing from each other, and are not used to limit the protection scope of the present invention.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (6)
1. A medical imaging method, comprising:
determining a template image corresponding to a current subject, wherein the image effect of the template image is an image effect corresponding to a scanning protocol parameter expected by a user;
taking the scanning protocol parameters corresponding to the template image as the scanning protocol parameters of the current testee;
controlling a scanning device to complete imaging scanning of the current subject according to the determined scanning protocol parameters so as to obtain a target image of the current subject;
wherein the determining the template image corresponding to the current subject includes:
receiving scanning position information and scanning protocol request information of a current subject, wherein the scanning position information is a positioning image containing a scanning position selected by a user for the current subject;
matching a plurality of candidate template images for the current patient according to the scanning part in the scanning part information and the scanning protocol request information, wherein each candidate template image corresponds to different scanning protocol parameters;
and receiving clicking or touching of the selected candidate template image by a user to receive image selection information of the user, and taking the candidate template image corresponding to the image selection information as a template image matched with the current subject.
2. The method according to claim 1, wherein taking the scan protocol parameter corresponding to the template image as the scan protocol parameter of the current subject comprises:
determining a scanning protocol parameter corresponding to the image identification of the template image according to the image identification of the template image and a mapping table stored with the image identification and the scanning protocol parameter;
the determined scan protocol parameters are used as scan protocol parameters of the current subject.
3. The method according to claim 1 or 2, wherein the target image is a magnetic resonance image and the scan protocol parameters include scan sequence parameters and magnetic resonance image reconstruction parameters.
4. A magnetic resonance imaging system, comprising:
a scanning bed for carrying a current subject;
a scanning device for scanning a scanning site of a current subject;
the processor is used for determining a template image corresponding to the current subject; taking the scanning protocol parameters corresponding to the template image as the scanning protocol parameters of the current testee; controlling the scanning device to complete imaging scanning of the current subject on the scanning bed according to the determined scanning protocol parameters so as to obtain a target image of the current subject, wherein the image effect of the template image is an image effect corresponding to the scanning protocol parameters expected by a user;
the device also comprises an output device and an input device;
the output device is used for outputting at least one candidate template image matched with the subject;
the input device is used for receiving the scanning position information and the scanning protocol request information of the current subject; the scanning protocol request information is used for matching a plurality of candidate template images for the current patient according to the scanning part in the scanning part information and the scanning protocol request information, and each candidate template image corresponds to different scanning protocol parameters; the method comprises the steps of receiving clicking or touching of a selected candidate template image by a user to receive image selection information of the user, wherein the scanning position information is a positioning image containing a scanning position selected by the user for a current subject;
the processor is further configured to use a candidate template image corresponding to the image selection information as a template image.
5. The system of claim 4, further comprising a database;
the database stores a mapping table and at least two template images;
the mapping table is used for storing image identifiers of template images and scanning protocol parameters corresponding to the image identifiers;
the processor is used for acquiring the image identifier of the template image selected by the user, inquiring the scanning protocol parameter corresponding to the image identifier in the mapping table, and taking the inquired scanning protocol parameter as the scanning protocol parameter of the current subject.
6. A storage medium containing computer executable instructions which, when executed by a computer processor, are for performing the medical imaging method according to any one of claims 1-3.
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| CN113645307A (en) * | 2021-08-18 | 2021-11-12 | 中国人民解放军东部战区总医院 | Nuclear magnetic resonance system network shared positioning database system and its establishment and use method |
| CN115267628B (en) * | 2022-07-29 | 2025-02-18 | 上海联影医疗科技股份有限公司 | Coil display method and system |
| CN116152367B (en) * | 2022-11-02 | 2023-10-20 | 佛山瑞加图医疗科技有限公司 | Spin echo magnetic resonance imaging method and device based on diffusion weighting |
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