CN106923826A - A kind of method and system of magnetic resonance imaging - Google Patents
A kind of method and system of magnetic resonance imaging Download PDFInfo
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- CN106923826A CN106923826A CN201511027482.0A CN201511027482A CN106923826A CN 106923826 A CN106923826 A CN 106923826A CN 201511027482 A CN201511027482 A CN 201511027482A CN 106923826 A CN106923826 A CN 106923826A
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Abstract
The invention discloses a kind of method of magnetic resonance imaging, the described method comprises the following steps：S1, obtain magnetic resonance signal of the detection site in initial scan time, it is reconstructed after obtain initial magnetic resonance images, and obtain corresponding initial position message；S2, obtain magnetic resonance signal of the detection site in the Current Scan time, it is reconstructed after obtain present day magnetic resonance image, and obtain corresponding current location information；S3, in real time display initial position message and current location information；S4, current location information and initial position message are compared, judge whether present day magnetic resonance image meets the requirements.The invention also discloses a kind of system of magnetic resonance imaging.The present invention obtains detection site motion conditions based on the scan image for having gathered, and real-time update shows, helps operator quickly to judge the situation of detection site motion.
Description
Technical field
The present invention relates to magnetic resonance imaging arts, more particularly to a kind of method and system of magnetic resonance imaging.
Background technology
Magnetic resonance radiationless, multi-faceted and multi-parameter imaging many merits cause magnetic resonance imaging into
It is one of important means that clinical medicine is checked, for clinical medicine provides very valuable diagnosis letter
Breath.Inspection of the magnetic resonance to software organization is very sensitive, can not only show the shape of human anatomic structure
State information, but also some Physiology and biochemistry information of tissue can be reflected, if the heart can be applied to
In dirty dynamic imaging, cerebral function imaging, human motion imaging and cardiovascular and cerebrovascular fast imaging, by pole
It is rapid-result soon that the earth improves heart dynamic imaging, cerebral function imaging, human motion imaging and cardiovascular and cerebrovascular
The diagnosis accuracy of the dynamic magnetic resonance imagings such as picture.
Dynamic magnetic resonance scanning technique such as Blood oxygen level dependence functional MRI (BOLD fMRI), moves
State susceptibility contrast Perfusion weighted imaging (DSC PWI), arterial spin labeling (ASL) and its
Technology that he is similar to is, it is necessary to the detection site continuously a series of image of repeated acquisition, single is swept
The time of tracing picture is usually 1-3 seconds (being usually no more than 10 seconds), so as to periodically gather multiple
The full brain image at time point.Total sweep time is general at 1-10 minutes, thus in imaging process often
Image blur or image artifacts are often caused due to the motion of examinee.When motion amplitude is smaller,
Being calculated often through sports calibration can substantially eliminate the influence of motion；But when motion amplitude is excessive,
The image calibration of post-processing stages can also fail, or can more seriously cause image artifacts and calculating
Mistake, then the scanning for resulting in the even whole examinee of data of present scan is cancelled.In this feelings
This group of data can only be abandoned or resurvey under condition, cause the waste of great time and resource.
Therefore, energy real-time detection and display motion conditions are particularly important in dynamic magnetic resonance scanning process.
The current appraisal procedure to motion conditions in dynamic magnetic resonance image includes：1) show to real-time update
Show the image that scanning is obtained, operator is by observing image subjective judgement with the presence or absence of obvious motion；2)
After scanned, obvious motion is judged whether by the image at all time points of sequentially leafing through；
3) after scanned, area-of-interest (ROI) is selected on image, and observe the time of this ROI
Signal curve, to judge whether picture signal receives the related influence of motion；4) after scanned, profit
With various post processing image registration algorithms (in the platform such as such as SPM, FSL, FREESurfer, AFNI
There is provided) calculate the moving parameter in image.
United States Patent (USP) US2013035588 is disclosed and is used the side for treating planning of magnetic resonance imaging
Method, system and computer-readable medium, tracking disposal is changed over time using MRI for multiple cycles
The motion in region or position, for substitute motion or signal be compared, with set up substitute with
Tumour correspondence.The motion of target is compared with substitute motion, for determining target in the cycle
In change in location whether cause gate dispose it is inaccurate.Still directly can not be seen in real time in the invention
The motion of examinee is observed, there is certain error using substitute, and device is complicated.
The content of the invention
In order to solve the above-mentioned technical problem, the present invention can be directly displayed in real time in dynamic magnetic resonance scanning
Motion conditions, help that scan operation person is quick to judge the situation that detection site is moved, and can be
Stop Current Scan in time when motion amplitude has exceeded acceptable scope, avoid waste more times
With resource.
The invention provides a kind of method of magnetic resonance imaging, comprise the following steps：
S1, obtain detection site initial scan time magnetic resonance signal, it is reconstructed after obtain just
Beginning MRI, and obtain corresponding initial position message；
S2, obtain magnetic resonance signal of the detection site in the Current Scan time, it is reconstructed after worked as
Preceding MRI, and obtain corresponding current location information；
S3, in real time display initial position message and current location information；
S4, current location information and initial position message are compared, judge present day magnetic resonance image
Whether meet the requirements.
Further, the positional information includes time parameter image corresponding with the time parameter
And location parameter.
Further, the step S4 is specifically included：
S41, current location parameter and initial position parameters are calculated, and obtained position deviation；
S42, the position deviation is compared with default deviation threshold, when the position deviation is big
When default deviation threshold, then judge undesirable, send alerting signal.
Further, methods described also includes that set up location parameter according to positional information becomes with time parameter
The first chart changed, and the positional information that will be gathered is in real time including in first chart.
Further, methods described also includes setting up second chart of the position deviation with time Parameters variation,
And the position deviation information that will be obtained includes in second chart in real time.
Further, the alerting signal in the step S42 is change first chart or the second figure
The color that table shows, or first chart or the second chart are highlighted.
Further, the location parameter includes three translational movements and three rotation amounts, and described three are put down
Shifting amount is respectively x-axis translational movement, y-axis translational movement and z-axis translational movement, and three rotation amounts are respectively
X-axis rotation amount, y-axis rotation amount and z-axis rotation amount.
Further, the alerting signal is sound, visual alarm.
Correspondingly, the invention provides a kind of system of magnetic resonance imaging, it is characterised in that the system
System includes acquisition module, image reconstruction module, display module and processing module,
The acquisition module, for obtaining detection site in initial time, the magnetic resonance of current time
Signal, and obtain corresponding initial position message and current location information；
Described image rebuilds module, for initial scan time, the magnetic resonance of Current Scan time letter
Number image reconstruction is carried out, obtain corresponding initial magnetic resonance images and present day magnetic resonance image；
The display module, for showing the current location information and initial position message in real time；
The processing module, for current location information to be compared with initial position message, judges
Whether present day magnetic resonance image meets the requirements.
Further, the positional information includes time parameter image corresponding with the time parameter
And location parameter.
Further, the processing module is specifically for current location parameter is entered with initial position parameters
Row is calculated, and obtains position deviation, and the position deviation is compared with default deviation threshold,
When the position deviation is more than default deviation threshold, then judge undesirable, send prompting letter
Number.
Further, the system also sets up module including chart；
It is root that the chart sets up module for setting up the first chart and the second chart, first chart
Chart of the location parameter with time Parameters variation is set up according to positional information, second chart is that position is inclined
The poor chart with time Parameters variation；
The display module is used for positional information, first chart and second of display detection site in real time
Chart.
Further, the alerting signal is to change the color that first chart or the second chart show,
Or be highlighted first chart or the second chart.
Further, the location parameter includes three translational movements and three rotation amounts, and described three are put down
Shifting amount is respectively x-axis translational movement, y-axis translational movement and z-axis translational movement, and three rotation amounts are respectively
X-axis rotation amount, y-axis rotation amount and z-axis rotation amount.
Magnetic resonance imaging of the invention and system, have the advantages that：
1st, the present invention obtains detection site motion conditions based on the scan image for having gathered, and shows in real time
Show, help operator quickly to judge the situation of detection site motion.
2nd, the present invention is by changing the color that the first chart or the second chart show, or by described first
Chart or the second chart are highlighted, and cause visual alarm, remind operator to note, it is also possible to
Directly by audio signal, warning lamp or text importing are reminded, can exceeded in motion amplitude
Stop Current Scan in time during acceptable scope, avoid waste more times and resource.
3rd, the present invention can not carry out any intervention to scanning, if terminate scanning and still continue to scan on
It is voluntarily to be judged by operator, it is practical.
4th, location parameter of the invention include three translational movements and three rotation amounts, can Real Time Observation arrive
The motion of examinee's all directions, detection information is abundant, high precision.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be right
The accompanying drawing to be used needed for embodiment or description of the prior art is briefly described, it should be apparent that,
Drawings in the following description are only some embodiments of the present invention, for those of ordinary skill in the art
For, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
The flow chart of Fig. 1 magnetic resonance imagings of the invention；
Fig. 2 is magnetic resonance imaging block diagram of the invention；
Fig. 3 is to post-process the BOLD EPI images for obtaining curve movement in time by SPM,
Wherein location parameter is three translational movements；
Fig. 4 is to post-process the BOLD EPI images for obtaining curve movement in time by SPM,
Wherein location parameter is three rotation amounts；
Fig. 5 is the display Rendering of real time kinematics detection.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is entered
Row is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the invention,
Rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not having
There is the every other embodiment obtained on the premise of making creative work, belong to protection of the present invention
Scope.
Embodiment one：
A kind of method of magnetic resonance imaging is the embodiment of the invention provides, be the described method comprises the following steps：
S1, obtain detection site initial scan time magnetic resonance signal, it is reconstructed after obtain just
Beginning MRI, and corresponding initial position message is obtained, while showing corresponding initial bit confidence
Breath and the first chart；
The initial position message includes initial position parameters P0, the initial position parameters it is corresponding when
Between parameter T0Image corresponding with the time parameter, the image is designated as initial pictures, first figure
Table is chart of the initial position parameters with time Parameters variation；
S2, obtain magnetic resonance signal of the detection site in the Current Scan time, it is reconstructed after worked as
Preceding MRI, and corresponding current location information is obtained, while showing that the first chart and image become
Change information；
The current location information includes current location parameter Pn, the current location parameter it is corresponding when
Between parameter TnImage corresponding with the time parameter, the image is designated as present image,
First chart is chart of the current location parameter with time Parameters variation, and the chart is specially
Location parameter with time Parameters variation curve map,
Described image change information is the comparison information of present image and initial pictures, the comparison information
It is that present image is shown with initial pictures simultaneously in operation interface, facilitates operator intuitively to see
To the image change of detection site；
S3, current location information and initial position message are compared, judge present day magnetic resonance image
Whether meet the requirements, specially：
According to current location parameter PnWith initial position parameters P0Calculate the position of current location and initial position
Put deviation delta P, and by the position deviation Δ P and default deviation threshold Δ PmaxIt is compared,
As Δ P≤Δ PmaxWhen, then return to step S2；
As Δ P>ΔPmaxWhen, then send alerting signal, wherein, the alerting signal for change or
It is highlighted curve map of the location parameter with time Parameters variation.
The location parameter includes three translational movements and three rotation amounts, and three translational movements are respectively x
Axle translational movement, y-axis translational movement and z-axis translational movement, three rotation amounts be respectively x-axis rotation amount,
Y-axis rotation amount and z-axis rotation amount.
The image of current point in time is carried out into registering calculating with the image of initial scan time point, must be sent as an envoy to
The image for obtaining current point in time is directed at the required translational movement for being changed and rotation with the image of initial time point
Turn amount.That is the acquisition of position deviation be based on the image that has gathered in itself, and without imaging device outside
Device, specific algorithm is prior art, including many different algorithm types, people in the art
Member it is to be understood that do not repeat herein.
The general principle of location parameter is calculated in the present invention is, assigns detection site as a rigid body,
I.e. will not deformation, the present image and the initial pictures are carried out to be calculated six location parameters,
And six location parameters are shown in the operation interface of MRI machine, and in real time
Display is updated, the location parameter includes three translational movements and three rotation amounts, if detection site does not have
There is motion, then six location parameters are zero or close to zero.For example, when having scanned n
Between parameter data, then can show six time graphs in operation interface, every curve correspondence one
Translational movement or a rotation amount, and there is n-1 point on the curve, when (n+1)th data of point
It has been gathered that, and location parameter is calculated after finishing, the operation interface is updated, the current curve
N point of upper display.
As shown in Figure 3 to Figure 4, if head movement ratio faster, its location parameter is similar to Fig. 3
With the spike in Fig. 4, if head movement is slower, its location parameter is similar to Fig. 3 and Fig. 4
In curves shift.
As shown in figure 5, in the inventive method and system the time graph of location parameter be displayed in real time it is dynamic
In state display window, the figure that real time scan is obtained can update display in Dynamic Announce window simultaneously.
Correspondingly, the system that the embodiment of the present invention additionally provides magnetic resonance imaging, the system includes obtaining
Modulus block, display module, processing module, the processing module include computing unit, comparing unit and
Control unit,
The acquisition module, for obtaining and shows detection site during MRI scan
Positional information, the positional information includes initial position message and current location information, the initial bit
Confidence breath includes initial position parameters P0, the corresponding time parameter T of the initial position parameters0With it is described
The corresponding image of time parameter, the image is designated as initial pictures, and the current location information includes current
Location parameter Pn, the corresponding time parameter T of the initial position parametersnIt is corresponding with the time parameter
Image, the image is designated as present image；
The display module, the positional information, the first chart for showing the detection site
With image change information, first chart is chart of the location parameter with time Parameters variation, described
Image change information is the comparison information of present image and initial pictures, and the comparison information is in operation
Present image is shown with initial pictures simultaneously on interface, facilitates operator can be visually seen detected
The image change at position；
The computing unit is used for according to current location parameter PnWith initial position parameters P0Calculate present bit
Put the position deviation Δ P with initial position；
The comparing unit is used for the position deviation Δ P and default deviation threshold Δ PmaxCompared
Compared with；
Described control unit is used to work as Δ P≤Δ PmaxWhen, then control to obtain and show described tested again
The current location information at position is surveyed, while showing the first chart and image change information；As Δ P>ΔPmax
When, then alerting signal is sent, wherein, the alerting signal is for change or is highlighted the position
Parameter with time Parameters variation curve map.
The location parameter includes three translational movements and three rotation amounts, and three translational movements are respectively x
Axle translational movement, y-axis translational movement and z-axis translational movement, three rotation amounts be respectively x-axis rotation amount,
Y-axis rotation amount and z-axis rotation amount.
Embodiment two：
The embodiment of the invention provides a kind of method of magnetic resonance imaging, method and the implementation of the embodiment
The difference that the method for example one is compared is：
Step S2 is：The current location of the detection site is obtained and shown after prefixed time interval
Information, while the first chart, the second chart and image change information are shown, or
The current location information of the detection site is obtained and shown after prefixed time interval, while
The second chart and image change information are shown,
Second chart is chart of the position deviation with time Parameters variation, and the chart is specially position
Deviation with time Parameters variation curve map, first chart and image change information and embodiment one
It is identical；
In step s3, as Δ P>ΔPmaxWhen, then alerting signal is sent, wherein, it is described to remind letter
Number to change or be highlighted curve map of the location parameter with time Parameters variation, or change or
Chart of the position deviation with time Parameters variation is highlighted, or is changed simultaneously or is highlighted above-mentioned
Two curves.
Correspondingly, the embodiment of the present invention additionally provides a kind of system of magnetic resonance imaging, the embodiment
Difference of the system compared with the system in embodiment two be：The display module is believed except display location
Breath, the first chart and image change information, also show the second chart, and second chart is that position is inclined
The poor chart with time Parameters variation, the chart is specially curve of the position deviation with time Parameters variation
Figure, or
The display module also shows the second chart, second figure except display image change information
Table is chart of the position deviation with time Parameters variation, and the chart is specially position deviation with time parameter
The curve map of change.
In systems, described control unit is used to work as Δ P≤Δ PmaxWhen, then control to obtain again and show
The current location information of the detection site, while showing that the first chart, the second chart and image become
Change information, or
Described control unit is used to work as Δ P≤Δ PmaxWhen, then control to obtain and show described being detected again
The current location information at position, while showing the second chart and image change information；
As Δ P>ΔPmaxWhen, then alerting signal is sent, the alerting signal is for change or is highlighted institute
Curve map of the location parameter with time Parameters variation is stated, or is changed or is highlighted position deviation at any time
Between Parameters variation chart, or change simultaneously or be highlighted above-mentioned two curves.
Embodiment three：
The invention provides a kind of method of magnetic resonance imaging, the described method comprises the following steps：
S1, obtain detection site initial scan time magnetic resonance signal, it is reconstructed after obtain just
Beginning MRI, and corresponding initial position message is obtained, while the initial position message is shown,
The initial position message includes initial position parameters P0, the corresponding time ginseng of the initial position parameters
Number T0Image corresponding with the time parameter, the image is designated as initial pictures；
S2, magnetic resonance signal of the acquisition detection site in the Current Scan time after prefixed time interval,
Present day magnetic resonance image is obtained after reconstructed, and obtains corresponding current location information, while showing institute
Current location information is stated, the current location information includes current location parameter Pn, the current location
The corresponding time parameter T of parameternImage corresponding with the time parameter, the image is designated as present image；
S3, according to current location parameter PnWith initial position parameters P0Calculate current location and initial position
Position deviation Δ P, and by the position deviation Δ P and default deviation threshold Δ PmaxIt is compared,
As Δ P≤Δ PmaxWhen, then return to step S2；
As Δ P>ΔPmaxWhen, then alerting signal is sent, the alerting signal is audio signal or warning
The signal that lamp sends.
The location parameter includes three translational movements and three rotation amounts, and three translational movements are respectively x
Axle translational movement, y-axis translational movement and z-axis translational movement, three rotation amounts be respectively x-axis rotation amount,
Y-axis rotation amount and z-axis rotation amount.
Correspondingly, present invention also offers a kind of system of magnetic resonance imaging, the system includes obtaining
Module, display module, processing module, the processing module include computing unit, comparing unit and control
Unit processed,
The acquisition module, for obtaining and shows detection site during MRI scan
Positional information, the positional information includes initial position message and current location information,
The initial position message includes initial position parameters P0, the initial position parameters it is corresponding when
Between parameter T0Image corresponding with the time parameter, the image is designated as initial pictures,
The current location information includes current location parameter Pn, the current location parameter it is corresponding when
Between parameter TnImage corresponding with the time parameter, the image is designated as present image；
The display module, the positional information for showing the detection site；
The computing unit is used for according to current location parameter PnWith initial position parameters P0Calculate present bit
Put the position deviation Δ P with initial position；
The comparing unit is used for the position deviation Δ P and default deviation threshold Δ PmaxCompared
Compared with；
Described control unit is used to work as Δ P≤Δ PmaxWhen, then control to obtain and show described tested again
Survey the current location information at position；As Δ P>ΔPmaxWhen, then alerting signal is sent, wherein, it is described to carry
Signal of waking up is the signal that audio signal or warning lamp send.
The location parameter includes three translational movements and three rotation amounts, and three translational movements are respectively x
Axle translational movement, y-axis translational movement and z-axis translational movement, three rotation amounts be respectively x-axis rotation amount,
Y-axis rotation amount and z-axis rotation amount.
Magnetic resonance imaging of the invention and system, have the advantages that：
1st, the present invention obtains detection site motion conditions based on the scan image for having gathered, and shows in real time
Show, help operator quickly to judge the situation of detection site motion.
2nd, the present invention is by changing the color that the first chart or the second chart show, or by described first
Chart or the second chart are highlighted, and cause visual alarm, remind operator to note, it is also possible to
Directly reminded by audio signal or warning lamp, acceptable model can have been exceeded in motion amplitude
Stop Current Scan in time when enclosing, avoid waste more times and resource.
3rd, the present invention can not carry out any intervention to scanning, if terminate scanning and still continue to scan on
It is voluntarily to be judged by operator, it is practical.
4th, location parameter of the invention include three translational movements and three rotation amounts, can Real Time Observation arrive
The motion of examinee's all directions, accuracy of detection is high.
The above is the preferred embodiment of the present invention, it is noted that general for the art
For logical technical staff, under the premise without departing from the principles of the invention, can also make some improvement and
Retouching, these improvements and modifications are also considered as protection scope of the present invention.
Claims (14)
1. a kind of method of magnetic resonance imaging, it is characterised in that comprise the following steps：
S1, obtain detection site initial scan time magnetic resonance signal, it is reconstructed after obtain just
Beginning MRI, and obtain corresponding initial position message；
S2, obtain magnetic resonance signal of the detection site in the Current Scan time, it is reconstructed after worked as
Preceding MRI, and obtain corresponding current location information；
S3, in real time display initial position message and current location information；
S4, current location information and initial position message are compared, judge present day magnetic resonance image
Whether meet the requirements.
2. the method for magnetic resonance imaging according to claim 1, it is characterised in that the position
Information includes time parameter image corresponding with the time parameter and location parameter.
3. the method for magnetic resonance imaging according to claim 2, it is characterised in that the step
S4 is specifically included：
S41, current location parameter and initial position parameters are calculated, and obtained position deviation；
S42, the position deviation is compared with default deviation threshold, when the position deviation is big
When default deviation threshold, then judge undesirable, send alerting signal.
4. the method for magnetic resonance imaging according to claim 3, it is characterised in that methods described
Also include setting up first chart of the location parameter with time Parameters variation according to positional information, and will collection
Positional information be displayed in real time in first chart.
5. the method for magnetic resonance imaging according to claim 4, it is characterised in that methods described
Also include setting up second chart of the position deviation with time Parameters variation, and the position deviation letter that will be obtained
Breath is displayed in second chart in real time.
6. the method for magnetic resonance imaging according to claim 5, it is characterised in that the step
Alerting signal in S42 is to change the color that first chart or the second chart show, or will be described
First chart or the second chart are highlighted.
7. the method for the magnetic resonance imaging according to claim 2-6 any one, it is characterised in that
The location parameter includes three translational movements and three rotation amounts, and three translational movements are respectively x-axis
Translational movement, y-axis translational movement and z-axis translational movement, three rotation amounts are respectively x-axis rotation amount, y
Axle rotation amount and z-axis rotation amount.
8. the method for magnetic resonance imaging according to claim 3, it is characterised in that the prompting
Signal is sound, light or word alarm signal.
9. a kind of system of magnetic resonance imaging, it is characterised in that the system includes acquisition module, figure
As rebuilding module, display module and processing module,
The acquisition module, for obtaining detection site in initial time, the magnetic resonance of current time
Signal, and obtain corresponding initial position message and current location information；
Described image rebuilds module, for initial scan time, the magnetic resonance of Current Scan time letter
Number image reconstruction is carried out, obtain corresponding initial magnetic resonance images and present day magnetic resonance image；
The display module, for showing the current location information and initial position message in real time；
The processing module, for current location information to be compared with initial position message, judges
Whether present day magnetic resonance image meets the requirements.
10. the system of magnetic resonance imaging according to claim 9, it is characterised in that the position
Information includes time parameter image corresponding with the time parameter and location parameter.
The system of 11. magnetic resonance imagings according to claim 10, it is characterised in that the place
Reason module obtains position deviation specifically for current location parameter is calculated with initial position parameters,
And the position deviation is compared with default deviation threshold, when the position deviation is more than default
Deviation threshold when, then judge undesirable, send alerting signal.
The system of 12. magnetic resonance imagings according to claim 11, it is characterised in that the system
System also sets up module including chart；
It is root that the chart sets up module for setting up the first chart and the second chart, first chart
Chart of the location parameter with time Parameters variation is set up according to positional information, second chart is that position is inclined
The poor chart with time Parameters variation；
The display module is used for positional information, first chart and second of display detection site in real time
Chart.
The system of 13. magnetic resonance imagings according to claim 12, it is characterised in that described to carry
Awake signal is to change the color that first chart or the second figure chart show, or by first figure
Table or the second chart are highlighted.
The system of 14. magnetic resonance imaging according to claim 9-13 any one, its feature exists
In the location parameter includes three translational movements and three rotation amounts, and three translational movements are respectively x
Axle translational movement, y-axis translational movement and z-axis translational movement, three rotation amounts be respectively x-axis rotation amount,
Y-axis rotation amount and z-axis rotation amount.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN109447044A (en) * | 2018-12-25 | 2019-03-08 | 上海联影医疗科技有限公司 | Scan control method and system |
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| CN111643083A (en) * | 2020-06-22 | 2020-09-11 | 苏州高新区人民医院 | Mammary gland MRI artifact suppression method based on machine vision |
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