CN109725274A - Magnetic Resonance Spectrum scanning and its scanning adjusting method, device, equipment and storage medium - Google Patents
Magnetic Resonance Spectrum scanning and its scanning adjusting method, device, equipment and storage medium Download PDFInfo
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- CN109725274A CN109725274A CN201811645804.1A CN201811645804A CN109725274A CN 109725274 A CN109725274 A CN 109725274A CN 201811645804 A CN201811645804 A CN 201811645804A CN 109725274 A CN109725274 A CN 109725274A
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Abstract
The invention discloses a kind of scanning of Magnetic Resonance Spectrum and its scanning adjusting method, device, equipment and storage mediums, this method comprises: the water signal in the target area of target acquisition moment acquisition target object；Feature extraction is carried out to the water signal and obtains the spectral characteristic of the water signal；It is adjusted according to the sweep parameter that spectral characteristic described at least one scans the Magnetic Resonance Spectrum.The technical solution of the embodiment of the present invention, which realizes, to be realized in Magnetic Resonance Spectrum scanning, it is adjusted according to the sweep parameter that the spectral characteristic of the water signal of target object scans Magnetic Resonance Spectrum, it can not only guarantee the quality of scan image, while sweep time and scanning cost can be saved.
Description
Technical field
The present embodiments relate to Magnetic Resonance Spectrum scanning technique field more particularly to a kind of Magnetic Resonance Spectrum scanning and
Its scanning adjusting method, device, equipment and storage medium.
Background technique
Magnetic Resonance Spectrum (magnetic resonance spectroscopy, MRS) is to utilize magnetic resonance chemical shift
(chemical shift) phenomenon measures a kind of detection methods of the molecular chaperones of component, is also currently the only measure
The chemical component of living tissue metabolin and the inspection method of content.Currently the most commonly used is Hydrogen Proton (1H) spectroscopic techniques.Due to
Magnetic resonance frequency of the 1H in different compounds has differences, therefore the position of their formants in the spectral line of MRS also just has
Institute is different, can determine whether the property of compound accordingly, and the peak height of formant and area reflect the concentration of compound, therefore may be used also
Carry out quantitative analysis.Due to magnetic resonance spectroscopy techniques be a kind of non-invasive research organs of living beings tissue metabolism, biology variation and
The new technology of compound quantitative analysis is increasingly used in the diagnosis of certain diseases.However, the measurement pair of Magnetic Resonance Spectrum
The movement of scanned person is very sensitive.For the spectral line obtained, longer sweep time is generally required, especially in multi-voxel proton
When imaging, with the promotion of resolution ratio, coding number, which increases, will lead to being multiplied for time.But prolonged scanning, is swept
The person of retouching can usually generate it is unconscious swallow, cough even rotation etc. substantially move so that shimming area and imaging interested
Region changes, so that scanning result is deteriorated or even spectral line is not available.
It is in the prior art usually after Magnetic Resonance Spectrum, technician is by observation wave spectrum as a result, if image quality
Difference then needs to rescan, and wastes a large amount of time and cost.The prior art can not be by detecting according to the fortune for being scanned person
Dynamic amplitude, prompts technician to rescan in time.
Summary of the invention
The embodiment of the invention provides a kind of scanning of Magnetic Resonance Spectrum and its scanning adjusting method, device, equipment and deposit
Storage media, to guarantee the accuracy of Magnetic Resonance Spectrum scanning.
In a first aspect, the embodiment of the invention provides a kind of Magnetic Resonance Spectrum scanning adjusting methods, this method comprises:
Water signal in the target area of target acquisition moment acquisition target object, wherein the target acquisition moment packet
Include at least one predetermined time before starting Magnetic Resonance Spectrum scanning and/or in Magnetic Resonance Spectrum scanning process；
Feature extraction is carried out to the water signal and obtains the spectral characteristic of the water signal, wherein the spectral characteristic packet
Include that water signal chemical shift, half peak height be wide and curve symmetry at least one of；
It is adjusted according to the sweep parameter that spectral characteristic described at least one scans the Magnetic Resonance Spectrum.
Second aspect, the embodiment of the invention also provides a kind of magnetic resonance system spectral scan method, the magnetic resonance system
System includes monitoring modular and image-forming module, and monitoring data sequent is arranged in the monitoring modular, and imaging sequence, institute is arranged in the image-forming module
The method of stating includes:
Target object target area is excited using monitoring data sequent, to obtain monitoring signals；
The motion state of target area or the state of magnetic resonance system are determined according to the monitoring signals；
In the case where the motion state of the target area or the state of magnetic resonance system meet and impose a condition, utilize
Imaging sequence excites target object target area, to obtain imaging signal；
The wave spectrum image of the target area is obtained according to imaging signal.
The third aspect, the embodiment of the invention also provides a kind of Magnetic Resonance Spectrum scan adjusting device, which includes:
Signal acquisition module, in the water signal of the target area of target acquisition moment acquisition target object, wherein institute
Stating the target acquisition moment is included in front of starting Magnetic Resonance Spectrum scanning and/or at least one of Magnetic Resonance Spectrum scanning process
Predetermined time；
Water signal processing module obtains the spectral characteristic of the water signal for carrying out feature extraction to the water signal,
Wherein, the spectral characteristic include that water signal chemical shift, half peak height be wide and curve symmetry at least one of；
Sweep parameter adjusts module, for being swept according at least one described spectral characteristic to the Magnetic Resonance Spectrum scanning
Parameter is retouched to be adjusted.
Fourth aspect, the embodiment of the invention also provides magnetic resonance system spectral scan devices, which is characterized in that magnetic resonance
System includes monitoring modular and image-forming module, and monitoring data sequent is arranged in the monitoring modular, and imaging sequence is arranged in the image-forming module,
The magnetic resonance system spectral scan device includes:
Monitoring signals obtain module, for exciting target object target area using monitoring data sequent, to obtain monitoring signals；
State determining module, for determining the motion state or magnetic resonance system of target area according to the monitoring signals
State；
Imaging signal obtains module, for meeting in the motion state of the target area or the state of magnetic resonance system
In the case where setting condition, target object target area is excited using imaging sequence, to obtain imaging signal；
Wave spectrum image collection module, for obtaining the wave spectrum image of the target area according to imaging signal.
5th aspect, the embodiment of the invention also provides a kind of equipment, which includes:
One or more processors；
Memory, for storing one or more programs,
When one or more of programs are executed by one or more of processors, so that one or more of processing
Any institute in any the Magnetic Resonance Spectrum scanning adjusting method and/or the embodiment of the present invention in the device realization embodiment of the present invention
The magnetic resonance system spectral scan method stated.
6th aspect, the embodiment of the invention also provides a kind of computer readable storage mediums, are stored thereon with computer
Program realizes any Magnetic Resonance Spectrum scanning adjusting method in the embodiment of the present invention when program is executed by processor
And/or any magnetic resonance system spectral scan method in the embodiment of the present invention.
The technical solution of the present embodiment by target acquire the moment acquire target object target area water signal, it is right
The water signal carries out feature extraction and obtains the spectral characteristic of the water signal, according to spectral characteristic described at least one to described
The sweep parameter of Magnetic Resonance Spectrum scanning is adjusted, and can determine scanning strategy according to the state of magnetic resonance system.The present invention
The technical solution of embodiment, which solves magnetic resonant wave time spectrum, to be needed by observation wave spectrum as a result, if image quality is poor
The problem of rescaning, wasting a large amount of time and cost realizes special by the wave spectrum of the water signal of detected target object
Property come adjust Magnetic Resonance Spectrum scanning sweep parameter, can not only guarantee the accuracy of scan data, additionally it is possible to save scanning
Time and cost.
Detailed description of the invention
Fig. 1 a is a kind of flow chart of the Magnetic Resonance Spectrum scanning adjusting method provided in the embodiment of the present invention one；
Fig. 1 b is a kind of exemplary diagram at target acquisition moment provided in the embodiment of the present invention one；
Fig. 1 c is a kind of exemplary diagram of the centre frequency field detecting example timing provided in the embodiment of the present invention one；
Fig. 1 d is the wave spectrogram before a kind of centre frequency correction provided in the embodiment of the present invention one；
Fig. 1 e is the wave spectrogram after a kind of centre frequency correction provided in the embodiment of the present invention one；
Fig. 1 f is a kind of scanning motion detection timing exemplary diagram provided in the embodiment of the present invention one；
Fig. 1 g- Fig. 1 h is a kind of brain image provided in the embodiment of the present invention one.
Fig. 1 i indicate be a kind of influence of movement for being provided in the embodiment of the present invention one to image schematic diagram.
Fig. 2 is a kind of flow chart of the Magnetic Resonance Spectrum scanning adjusting method provided in the embodiment of the present invention two；
Fig. 3 is a kind of flow chart of the magnetic resonance system spectral scan method provided in the embodiment of the present invention three；
Fig. 4 is a kind of structural schematic diagram of the Magnetic Resonance Spectrum scan adjusting device provided in the embodiment of the present invention four；
Fig. 5 is a kind of structural schematic diagram of the magnetic resonance system spectral scan device provided in the embodiment of the present invention five；
Fig. 6 is a kind of structural schematic diagram of the equipment provided in the embodiment of the present invention six.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
It should be mentioned that some exemplary embodiments are described as before exemplary embodiment is discussed in greater detail
The processing or method described as flow chart.Although operations (or step) are described as the processing of sequence by flow chart,
Many of these operations can be implemented concurrently, concomitantly or simultaneously.In addition, the sequence of operations can be pacified again
Row.The processing can be terminated when its operations are completed, it is also possible to have the additional step being not included in attached drawing.Institute
Stating processing can correspond to method, function, regulation, subroutine, subprogram etc..
Embodiment one
Fig. 1 a is the flow chart for the Magnetic Resonance Spectrum scanning adjusting method that the embodiment of the present invention one provides, and the present embodiment can fit
The case where adjusting is scanned for medical imaging devices, is particularly suitable for Magnetic Resonance Spectrum scanning adjustment.This method can be total to by magnetic
Vibration wave composes scan adjusting device to execute, which can be realized that the device can be integrated in equipment by hardware and/or software
It executes, specifically comprises the following steps: in (such as computer)
Step 101, the water signal in the target area of target acquisition moment acquisition target object.
Wherein, the target acquisition moment is included in front of beginning Magnetic Resonance Spectrum scans and/or Magnetic Resonance Spectrum scans
At least one predetermined time in process.
The target acquisition moment can be before starting Magnetic Resonance Spectrum scanning, can also be scanned with Magnetic Resonance Spectrum
Interted in journey.
Target area may include certain positions of target object, such as brain etc..
Wherein, target object refers to examinee, may include scientific research personnel, patient etc..
For example, as shown in Figure 1 b for target acquire the moment exemplary diagram, module B indicate image-forming module, containing suppression water and
Imaging sequence excitation portion, imaging sequence may include monomer element imaging sequence and multi-voxel proton imaging sequence, such as: spin echo list
Voxel (svs_press), stimulated echo monomer plain (svs_steam), multi-voxel proton spin echo (csi_press), multi-voxel proton thorn
Swash echo (csi_steam) etc..A monitoring modular A can be arranged in image-forming module after n times repeated acquisition data, and the present invention is real
Example is applied in image-forming module acquisition, centre frequency field detecting or motion detection can be interted, i.e., A module (the monitoring mould in figure
Block).In order to save time, a monitoring modular can be added every after Polaroid acquisition.A module can use monitoring
Sequence excites target object target area, to obtain monitoring signals；The movement shape of target area is determined according to the monitoring signals
The state of state or magnetic resonance system.
Before predetermined time can be the acquisition once, twice or repeatedly of B module, loads an A module and detected.
Step 102 obtains the spectral characteristic of the water signal to water signal progress feature extraction.
Wherein, the spectral characteristic include that water signal chemical shift, half peak height be wide and curve symmetry at least one
?.
The wave of the water signal is obtained by carrying out feature extraction (such as Fourier transformation etc.) to collected water signal
Spectral property (wherein, judges that the corresponding half peak height of water signal is wide to set by experiment when the corresponding half peak height of water signal is wide
Fixed threshold value determines, if it exceeds the threshold value of setting, judges that the corresponding half peak height of water signal is wide), the corresponding frequency of water signal
(wherein, judge that water signal curve symmetry is determined by the threshold value of experiment setting) when domain symmetry is very poor, shows centre frequency
Field is poor, can inquire whether operator stop present scan by preset interactive interface, and since acquisition data are in
The region of frequency of heart field difference prompts target object, mobile area-of-interest.
Centre frequency field detecting example timing is as illustrated in figure 1 c: by the way that with a kind of low-angle (flip angle) excitation, short weight is multiple
Time (repetition time, TR) quick obtaining water signal centre frequency and the wide scheme of half peak height.Radio frequency (RF) in figure
The corresponding flip angle of pulse is a kind of example of implementation, is also possible to other pulse signals.Gx, Gy, Gz are respectively indicated
Along X-axis, the gradient of three orthogonal directions of Y-axis and Z axis；ADC is analog-to-digital conversion signal acquisition window；RF is radio-frequency pulse transmitting,WithFor the flip angle that different time applies, centre frequency can be determined by ADC.
Step 103 is adjusted according to the sweep parameter that at least one described spectral characteristic scans the Magnetic Resonance Spectrum
It is whole.
Optionally, at least one of described basis spectral characteristic carries out the sweep parameter that the Magnetic Resonance Spectrum scans
Adjustment, comprising:
If the water signal chemical shift is greater than preset displacement threshold value, redefines and acquire the moment pair with the target
The targeted scans parameter answered, preset displacement threshold value are rule of thumb arranged；
The target object is scanned according to the targeted scans parameter, to update and the targeted scans moment pair
The scan data answered.
If the water signal chemical shift is greater than preset displacement threshold value, thus it is speculated that water signal caused by the movement of target object
Chemical shift is bigger than normal, and the corresponding scan data in this part will be available, and needs to resurvey this partial scan data.
Optionally, it is described redefine with before target acquisition moment corresponding targeted scans parameter, further includes:
The shimming parameter of the magnetic resonance system is adjusted, wherein the adjustment includes restarting；And/or it is right
The target object is scanned posture prompting.
It is described redefine with before target acquisition moment corresponding targeted scans parameter, may include to described
The shimming parameter of magnetic resonance system, which is adjusted, is scanned at least one that posture is reminded with to the target object.
Scanning posture prompting, which refers to, reminds target object adjustment scanning posture, can be the diversified forms such as voice prompting.
It is described redefine with before target acquisition moment corresponding targeted scans parameter, can be total to the magnetic
The shimming parameter of vibrating system is adjusted, such as restarting shimming.
It is described redefine with before target acquisition moment corresponding targeted scans parameter, can be to the target
Object is scanned posture prompting.
Wherein, user includes the operator of magnetic resonance system.
Optionally, at least one of described basis spectral characteristic carries out the sweep parameter that the Magnetic Resonance Spectrum scans
Adjustment, comprising:
If the half peak height width be not in preset in high wide scope and/or the curve symmetry be unsatisfactory for it is default symmetrical
Property condition, then generate prompt information, wherein the prompt information be used for prompt target object adjustment area-of-interest position
And/or for prompting the user whether to stop present scan.
Wherein, if the half peak height width, which is not in preset in high wide scope, refers to that half peak height is wider than width.
The curve symmetry is unsatisfactory for default Symmetry Condition and refers to that curve symmetry is poor.
Half peak height is wider than wide at least one condition met in the two with curve symmetry difference, shows in target area
Frequency of heart field quality is poor, can prompt the mobile area-of-interest position of target object.
Half peak height is wider than wide at least one condition met in the two with curve symmetry difference, shows in target area
Frequency of heart field quality is poor, can prompt the user whether to stop present scan.
Half peak height is wider than wide at least one condition met in the two with curve symmetry difference, shows in target area
Frequency of heart field quality is poor, can prompt the user whether to stop present scan and can prompt the mobile area-of-interest position of target object
It sets.
Optionally, at least one of described basis spectral characteristic carries out the sweep parameter that the Magnetic Resonance Spectrum scans
Adjustment, comprising:
If the water signal chemical shift, the wide and described curve symmetry of the half peak height are all satisfied preset condition,
Obtain the offset deviation of the water signal chemical shift, and the scanning scanned according to the offset deviation to the Magnetic Resonance Spectrum
The frequency departure of data is corrected.
If the water signal chemical shift, the wide and described curve symmetry of the half peak height are all satisfied preset condition and refer to
Water signal chemical shift is in preset threshold range, and half peak height is wide properly, curve symmetry is reasonable.
Frequency offset correction method refers to the frequency that spectral data can be corrected according to the chemical shift of water signal.
Such as it can be using the centre frequency of the water signal of first time acquisition as benchmark, later in collected water signal
If frequency of heart and benchmark have deviation, this deviation is just added, realizes frequency offset correction.
For example to be surveyed in scan plan 100 times, exceeded by the detection of centre frequency field when discovery water signal displacement changes
Preset threshold, thus it is speculated that may be that water signal offset deviation caused by moving is big, for example front acquires 20 times, is currently acquiring
Data due to being influenced by moving, data are not available, and need to resurvey this partial data.
Ideally, for proton nuclei, 3T system centre frequency about corresponds to 128MHZ, and 1.5T system is about corresponding
64MHZ。
Fig. 1 d is the wave spectrogram before the frequency correction of center, and Fig. 1 e is the wave spectrogram after the frequency correction of center.If in not doing
Frequency of heart corrects (Fig. 1 d), it is assumed that 128 acquisitions have been carried out to certain region, to the data of acquisition be overlapped it is average and, correction
Before, there is overlapping since the centre frequency of the data acquired every time is offset, between the lactic acid of 1.3ppm is bimodal, cannot divide completely
It opens, so that image resolution ratio is lower；After correction (shown in Fig. 1 e), the bimodal of lactic acid is clearly separated, the half peak height of NAA, Cr etc.
Wide FWHM also narrows, and illustrates that the resolution ratio of the acquisition image of the embodiment of the present invention significantly improves.
Furthermore, it is possible to be joined according to the motion state of the target area of target object to the scanning that the Magnetic Resonance Spectrum scans
Number is adjusted, comprising: when monitoring that scanned person has movement, program starts voice prompting automatically, and subject is prompted to concentrate note
Meaning force-fitting, adheres to quiet recumbency.Meanwhile judging motion amplitude size, if result feed back motion amplitude is smaller, correspondence can be rejected
K space data near moment, and resurvey this several data being removed；If motion amplitude is larger, suggestion is prompted to use
Family (such as operator etc.) stops present scan, restarts to scan.
It is as shown in Figure 1 f that scanning motion detects timing example.
By exciting (RF in figure) with a kind of low-angle, quick 2D excitation obtains zonule positioning projection and carries out movement inspection
It surveys.Wherein, RF is not limited to the excitation K space manner of the 2D in figure.Motion detection is carried out by ADC.
For example, it can use motion detection to navigate.
Scanned position is head in Fig. 1 g- Fig. 1 h, and selectes a position as navigation bar, by one in head zone
It is projected on a direction, wherein cylindrical body is navigation bar.In the case that this navigation bar position is fixed, when inclined with the time
It moves, the image measured is corresponding also to change.If projecting, in the case that navigation bar is constant, thrown when static
What shadow went out is straight line, in the case where motion change, a little fluctuation of the line being projected out slightly.
Fig. 1 i indicates influence of the movement to image.Image top half is the tractography picture obtained, the song of lower half portion
The projection of line expression white image.Arrow indicates that corresponding scanned object head moves.The region that rectangle frame is selected is corresponding
The object without motion；When there is strenuous exercise, the amplitude of projection line has more obvious shake；When occurring slightly transporting shown in arrow
When dynamic, can voice prompting target object keep quite；It is more than to stop present scan after certain threshold value and open when there is strenuous exercise
Beginning primary new scanning.
The technical solution of the present embodiment by target acquire the moment acquire target object target area water signal, it is right
The water signal carries out feature extraction and obtains the spectral characteristic of the water signal, according to spectral characteristic described at least one to described
The sweep parameter of Magnetic Resonance Spectrum scanning is adjusted, and can determine scanning strategy according to the state of magnetic resonance system.The present invention
The technical solution of embodiment, which solves magnetic resonant wave time spectrum, to be needed by observation wave spectrum as a result, if image quality is poor
The problem of rescaning, wasting a large amount of time and cost realizes special by the wave spectrum of the water signal of detected target object
Property come adjust Magnetic Resonance Spectrum scanning sweep parameter, can not only guarantee the accuracy of scan data, additionally it is possible to save scanning
Time and cost.
Embodiment two
Fig. 2 is a kind of flow chart of magnetic resonance system spectral scan method provided by Embodiment 2 of the present invention, the present embodiment
On the basis of the above embodiments, optional is that at least one of described basis spectral characteristic scans the Magnetic Resonance Spectrum
Sweep parameter is adjusted, comprising: if the water signal chemical shift be greater than preset displacement threshold value, redefine with it is described
Target acquires moment corresponding targeted scans parameter；The target object is scanned according to the targeted scans parameter, with
Update scan data corresponding with the targeted scans moment.
On this basis, further, the acquisition and the target acquire moment corresponding targeted scans parameter it
Before, comprising: the shimming parameter of the magnetic resonance system is adjusted, wherein the adjustment includes restarting.
On this basis, further, the acquisition and the target acquire moment corresponding targeted scans parameter it
Before, comprising: posture is scanned to the target object and is reminded.
On this basis, further, at least one of described basis spectral characteristic scans the Magnetic Resonance Spectrum
Sweep parameter be adjusted, comprising: if the half peak height width is not in and presets in high wide scope and/or the curve symmetric
Property be unsatisfactory for default Symmetry Condition, then generate user's prompt information, wherein the prompt information is for prompting the user whether to stop
Only present scan.
On this basis, further, at least one of described basis spectral characteristic scans the Magnetic Resonance Spectrum
Sweep parameter be adjusted, comprising: if the half peak height width is not in and presets in high wide scope and/or the curve symmetric
Property be unsatisfactory for default Symmetry Condition, then generate scanning prompt information, wherein the prompt information is for prompting target object tune
The position of whole area-of-interest.
On this basis, further, at least one of described basis spectral characteristic scans the Magnetic Resonance Spectrum
Sweep parameter be adjusted, comprising: if the water signal chemical shift, the wide and described curve symmetry of the half peak height are equal
Meet preset condition, then obtains the offset deviation of the water signal chemical shift, and total to the magnetic according to the offset deviation
The frequency departure of the scan data of vibration spectral scan is corrected.
As shown in Fig. 2, specifically including the following steps:
Step 201, the water signal in the target area of target acquisition moment acquisition target object.
Wherein, the target acquisition moment is included in front of beginning Magnetic Resonance Spectrum scans and/or Magnetic Resonance Spectrum scans
At least one predetermined time in process.
Step 202 obtains the spectral characteristic of the water signal to water signal progress feature extraction.
Wherein, the spectral characteristic include that water signal chemical shift, half peak height be wide and curve symmetry at least one
?.
If step 203, the water signal chemical shift are greater than preset displacement threshold value, redefine and adopted with the target
Collect moment corresponding targeted scans parameter；The target object is scanned according to the targeted scans parameter, with update with
Targeted scans moment corresponding scan data.
If step 204, the half peak height width are not in and preset in high wide scope and/or the curve symmetry is unsatisfactory for
Default Symmetry Condition, then generate prompt information.
Wherein, the prompt information is used to prompt the position of target object adjustment area-of-interest and/or for prompting to use
Whether family stops present scan.
It presets in high wide scope and refers to that half peak height is wider than width.
Default Symmetry Condition refers to that symmetry is poor.
Optionally, if the half peak height width is not in and presets in high wide scope and/or the curve symmetry is unsatisfactory for
Default Symmetry Condition, then generate prompt information, wherein the prompt information is for prompting target object to adjust area-of-interest
Position；Or for prompting the user whether to stop present scan.
If step 205, the water signal chemical shift, the wide and described curve symmetry of the half peak height are all satisfied default
Condition then obtains the offset deviation of the water signal chemical shift, and is swept according to the offset deviation to the Magnetic Resonance Spectrum
The frequency departure for the scan data retouched is corrected.
If the water signal chemical shift, the wide and described curve symmetry of the half peak height are all satisfied preset condition and refer to
Water signal chemical shift deviation smaller (meeting preset threshold, slight variations), half peak height is wide meets preset threshold, curve symmetry
Acceptable (meeting corresponding preset threshold).
It should be noted that being carried out clearly just for the sake of convenient to each technical characteristic in this implementation to the number of step
The explanation of Chu, not to the considered critical of execution sequence.Illustratively, in the present embodiment, to step 203, step 204 and step
With no restrictions, step 203, step 204 and step 205 can execute 205 sequence parallel, can also serially execute.
If the technical solution of the embodiment of the present invention is greater than preset displacement threshold value by the water signal chemical shift, weigh
New determining targeted scans parameter corresponding with the target acquisition moment；According to the targeted scans parameter to the target object
It is scanned, to update scan data corresponding with the targeted scans moment, realizes the shape by detecting magnetic resonance system
State determines the quality of scan data, can save sweep time and cost.In turn, by generating user's prompt information, generating and sweep
It retouches prompt information, be scanned the purpose that the modes such as posture prompting realize adjustment scanning to the target object.In turn, by such as
The wide and described curve symmetry of water signal chemical shift, the half peak height described in fruit is all satisfied preset condition, then obtains the water
The offset deviation of signal chemical shift, and the frequency for the scan data that the Magnetic Resonance Spectrum is scanned according to the offset deviation
Deviation is corrected, and realizes the effect for improving wave spectrum image resolution ratio.
Embodiment three
Fig. 3 is a kind of flow chart for magnetic resonance system spectral scan method that the embodiment of the present invention three provides, the present embodiment
The case where being applicable to magnetic resonance system spectral scan, this method can be executed by magnetic resonance system spectral scan device, should
Device can be realized by the mode of software and/or hardware.The magnetic resonance system includes monitoring modular and image-forming module, the prison
It surveys module and monitoring data sequent is set, imaging sequence is arranged in the image-forming module.Referring to Fig. 3, magnetic resonance provided in an embodiment of the present invention
System spectral scan method includes the following steps:
It should be noted that a kind of magnetic resonance system spectral scan method that the embodiment of the present invention three provides is by embodiment
During one is used for magnetic resonance system spectral scan with the method in embodiment two, for adjusting magnetic resonance system spectral scan
Related scans workflow.
Step 301 excites target object target area using monitoring data sequent, to obtain monitoring signals.
The state of step 302, the motion state that target area is determined according to the monitoring signals or magnetic resonance system.
Monitoring signals may include water signal, motor message etc..
Step 303 meets the feelings to impose a condition in the motion state of the target area or the state of magnetic resonance system
Under condition, target object target area is excited using imaging sequence, to obtain imaging signal.
Wherein the method in step 302- step 303 is to be used for embodiment one and the scanning adjusting method of embodiment two
In embodiment three.
Wherein, the state of magnetic resonance system includes state of centre frequency field etc. (by the water signal of the water signal measured
The wide and described curve symmetry of displacement study, half peak height etc. determine magnetic resonance system state).
Motion state can also be determined by embodiment one and embodiment two.
Wherein, setting condition includes the state for the judgement centre frequency field mentioned in embodiment one and embodiment two and sentences
Whether the motion state of disconnected target area meets the empirical value determining according to experiment.
Step 304, the wave spectrum image that the target area is obtained according to imaging signal.
The technical solution of the embodiment of the present invention is by exciting target object target area using monitoring data sequent, to obtain monitoring
Signal；The motion state of target area or the state of magnetic resonance system are determined according to the monitoring signals；In the target area
In the case that the motion state in domain or the state of magnetic resonance system meet setting condition, imaging sequence is utilized to excite target object
Target area, to obtain imaging signal；The wave spectrum image of the target area is obtained according to imaging signal.The embodiment of the present invention
Technical solution, which solves magnetic resonant wave time spectrum, to be needed to rescan by observation wave spectrum as a result, if image quality is poor,
The problem of wasting a large amount of time and cost realizes motion state or magnetic resonance system by detecting target area
State adjustment scanning, can save sweep time and cost.
Example IV
Fig. 4 is a kind of structural schematic diagram of the Magnetic Resonance Spectrum scan adjusting device provided in the embodiment of the present invention four.This
Magnetic resonance provided by any embodiment of the invention can be performed in Magnetic Resonance Spectrum scan adjusting device provided by inventive embodiments
The specific structure of spectral scan method of adjustment, the device is as follows: signal acquisition module 41, water signal processing module 42 and scanning ginseng
Number adjustment module 43.
Wherein, signal acquisition module 41, the water signal of the target area for acquiring target object in the target acquisition moment,
Wherein, the target acquisition moment includes before starting Magnetic Resonance Spectrum scanning and/or in Magnetic Resonance Spectrum scanning process
At least one predetermined time；
Water signal processing module 42 obtains the wave spectrum spy of the water signal for carrying out feature extraction to the water signal
Property, wherein the spectral characteristic include that water signal chemical shift, half peak height be wide and curve symmetry at least one of；
Sweep parameter adjusts module 43, for what is scanned according at least one described spectral characteristic to the Magnetic Resonance Spectrum
Sweep parameter is adjusted.
The technical solution of the present embodiment by target acquire the moment acquire target object target area water signal, it is right
The water signal carries out feature extraction and obtains the spectral characteristic of the water signal, according to spectral characteristic described at least one to described
The sweep parameter of Magnetic Resonance Spectrum scanning is adjusted, and can determine scanning strategy according to the state of magnetic resonance system.The present invention
The technical solution of embodiment, which solves magnetic resonant wave time spectrum, to be needed by observation wave spectrum as a result, if image quality is poor
The problem of rescaning, wasting a large amount of time and cost realizes special by the wave spectrum of the water signal of detected target object
Property come adjust Magnetic Resonance Spectrum scanning sweep parameter, can not only guarantee the accuracy of scan data, additionally it is possible to save scanning
Time and cost.
Based on the above technical solution, sweep parameter adjusts module 43, is particularly used in:
If the water signal chemical shift is greater than preset displacement threshold value, redefines and acquire the moment pair with the target
The targeted scans parameter answered；
The target object is scanned according to the targeted scans parameter, to update and the targeted scans moment pair
The scan data answered.
Based on the above technical solution, the Magnetic Resonance Spectrum scan adjusting device further include: adjustment module.
Adjust module, for it is described redefine with before target acquisition moment corresponding targeted scans parameter,
The shimming parameter of the magnetic resonance system is adjusted, wherein the adjustment includes restarting；And/or to the target
Object is scanned posture prompting.
Based on the above technical solution, sweep parameter adjusts module 43, is particularly used in:
If the half peak height width be not in preset in high wide scope and/or the curve symmetry be unsatisfactory for it is default symmetrical
Property condition, then generate prompt information, wherein the prompt information be used for prompt target object adjustment area-of-interest position
And/or for prompting the user whether to stop present scan.Based on the above technical solution, sweep parameter adjusts module 43,
It is particularly used in:
If the water signal chemical shift, the wide and described curve symmetry of the half peak height are all satisfied preset condition,
Obtain the offset deviation of the water signal chemical shift, and the scanning scanned according to the offset deviation to the Magnetic Resonance Spectrum
The frequency departure of data is corrected.
Magnetic Resonance Spectrum scan adjusting device provided by the embodiment of the present invention can be performed any embodiment of that present invention and be mentioned
The Magnetic Resonance Spectrum scanning adjusting method of confession has the corresponding functional module of execution method and beneficial effect.
Embodiment five
Fig. 5 is a kind of structural schematic diagram of the magnetic resonance system spectral scan device provided in the embodiment of the present invention five.This
Magnetic resonance provided by any embodiment of the invention can be performed in magnetic resonance system spectral scan device provided by inventive embodiments
System spectral scan method, the specific structure of the device are as follows: monitoring signals obtain module 51, state determining module 52, imaging
Signal acquisition module 53 and wave spectrum image collection module 54.Magnetic resonance system includes monitoring modular and image-forming module, the monitoring
Monitoring data sequent is arranged in module, and imaging sequence is arranged in the image-forming module.
Monitoring signals obtain module 51, for exciting target object target area using monitoring data sequent, to obtain monitoring letter
Number；
State determining module 52, for determining motion state or the magnetic resonance system of target area according to the monitoring signals
The state of system；
Imaging signal obtains module 53, for full in the motion state of the target area or the state of magnetic resonance system
In the case that foot imposes a condition, target object target area is excited using imaging sequence, to obtain imaging signal；
Wave spectrum image collection module 54, for obtaining the wave spectrum image of the target area according to imaging signal.
The technical solution of the embodiment of the present invention is by exciting target object target area using monitoring data sequent, to obtain monitoring
Signal；The motion state of target area or the state of magnetic resonance system are determined according to the monitoring signals；In the target area
In the case that the motion state in domain or the state of magnetic resonance system meet setting condition, imaging sequence is utilized to excite target object
Target area, to obtain imaging signal；The wave spectrum image of the target area is obtained according to imaging signal.The embodiment of the present invention
Technical solution, which solves magnetic resonant wave time spectrum, to be needed to rescan by observation wave spectrum as a result, if image quality is poor,
The problem of wasting a large amount of time and cost realizes motion state or magnetic resonance system by detecting target area
State adjustment scanning, can save sweep time and cost.
Magnetic resonance system spectral scan device provided by the embodiment of the present invention can be performed any embodiment of that present invention and be mentioned
The magnetic resonance system spectral scan method of confession, has the corresponding functional module of execution method and beneficial effect.
Embodiment six
Fig. 6 is a kind of structural schematic diagram for equipment that the embodiment of the present invention six provides, as shown in fig. 6, the equipment includes place
Manage device 60, memory 61, input unit 62 and output device 63；The quantity of processor 60 can be one or more in equipment,
In Fig. 6 by taking a processor 60 as an example；Processor 60, memory 61, input unit 62 and output device 63 in equipment can be with
It is connected by bus or other modes, in Fig. 6 for being connected by bus.
Memory 61 is used as a kind of computer readable storage medium, can be used for storing software program, journey can be performed in computer
Sequence and module, as in the embodiment of the present invention Magnetic Resonance Spectrum scanning adjusting method and/or magnetic resonance system spectral scan side
Corresponding program instruction/the module of method is (for example, at signal acquisition module 41, water signal in Magnetic Resonance Spectrum scan adjusting device
It manages module 42 and sweep parameter adjusts module 43, and/or, the monitoring signals in magnetic resonance system spectral scan device obtain module
51, state determining module 52, imaging signal obtain module 53 and wave spectrum image collection module 54).Processor 60 is deposited by operation
Software program, instruction and module in memory 61 is stored up, thereby executing the various function application and data processing of equipment,
Realize above-mentioned Magnetic Resonance Spectrum scanning adjusting method and/or magnetic resonance system spectral scan method.
Memory 61 can mainly include storing program area and storage data area, wherein storing program area can store operation system
Application program needed for system, at least one function；Storage data area, which can be stored, uses created data etc. according to terminal.This
Outside, memory 61 may include high-speed random access memory, can also include nonvolatile memory, for example, at least a magnetic
Disk storage device, flush memory device or other non-volatile solid state memory parts.In some instances, memory 61 can be further
Including the memory remotely located relative to processor 60, these remote memories can pass through network connection to equipment.It is above-mentioned
The example of network includes but is not limited to internet, intranet, local area network, mobile radio communication and combinations thereof.
Input unit 62 can be used for receiving the scanning signal of input, and generate the user setting and function control with equipment
Make related signal input.Output device 63 may include that display screen etc. shows equipment.
Embodiment seven
The embodiment of the present invention seven also provides a kind of storage medium comprising computer executable instructions, and the computer can be held
Row instruction is used to execute a kind of Magnetic Resonance Spectrum scanning adjusting method when being executed by computer processor, this method comprises:
Water signal in the target area of target acquisition moment acquisition target object, wherein the target acquisition moment packet
Include at least one predetermined time before starting Magnetic Resonance Spectrum scanning and/or in Magnetic Resonance Spectrum scanning process；
Feature extraction is carried out to the water signal and obtains the spectral characteristic of the water signal, wherein the spectral characteristic packet
Include that water signal chemical shift, half peak height be wide and curve symmetry at least one of；
It is adjusted according to the sweep parameter that spectral characteristic described at least one scans the Magnetic Resonance Spectrum.Certainly,
A kind of storage medium comprising computer executable instructions, computer executable instructions provided by the embodiment of the present invention are unlimited
It operates, is can also be performed in Magnetic Resonance Spectrum scanning adjustment provided by any embodiment of the invention in method as described above
Relevant operation.
As another optional embodiment of the embodiment of the present invention, also provide a kind of comprising computer executable instructions
Storage medium, the computer executable instructions by computer processor when being executed for executing a kind of magnetic resonance system wave
Scan method is composed, the magnetic resonance system includes monitoring modular and image-forming module, and monitoring data sequent is arranged in the monitoring modular, described
Imaging sequence is arranged in image-forming module, which comprises
Target object target area is excited using monitoring data sequent, to obtain monitoring signals；
The motion state of target area or the state of magnetic resonance system are determined according to the monitoring signals；
In the case where the motion state of the target area or the state of magnetic resonance system meet and impose a condition, utilize
Imaging sequence excites target object target area, to obtain imaging signal；
The wave spectrum image of the target area is obtained according to imaging signal.
By the description above with respect to embodiment, it is apparent to those skilled in the art that, the present invention
It can be realized by software and required common hardware, naturally it is also possible to which by hardware realization, but in many cases, the former is more
Good embodiment.Based on this understanding, technical solution of the present invention substantially in other words contributes to the prior art
Part can be embodied in the form of software products, which can store in computer readable storage medium
In, floppy disk, read-only memory (Read-Only Memory, ROM), random access memory (Random such as computer
Access Memory, RAM), flash memory (FLASH), hard disk or CD etc., including some instructions are with so that a computer is set
Standby (can be personal computer, server or the network equipment etc.) executes method described in each embodiment of the present invention.
It is worth noting that, included each unit and module are only patrolled according to function in the embodiment of above-mentioned apparatus
It volume is divided, but is not limited to the above division, as long as corresponding functions can be realized；In addition, each function list
The specific name of member is also only for convenience of distinguishing each other, the protection scope being not intended to restrict the invention.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (10)
1. a kind of Magnetic Resonance Spectrum scanning adjusting method characterized by comprising
Water signal in the target area of target acquisition moment acquisition target object, wherein the target acquisition moment is included in
Start at least one predetermined time before Magnetic Resonance Spectrum scans and/or in Magnetic Resonance Spectrum scanning process；
Feature extraction is carried out to the water signal and obtains the spectral characteristic of the water signal, wherein the spectral characteristic includes water
Signal chemical shift, half peak height be wide and curve symmetry at least one of；
It is adjusted according to the sweep parameter that spectral characteristic described at least one scans the Magnetic Resonance Spectrum.
2. the method according to claim 1, wherein at least one of described basis spectral characteristic is to the magnetic
The sweep parameter of resonance spectral scan is adjusted, comprising:
If the water signal chemical shift is greater than preset displacement threshold value, redefine corresponding with the target acquisition moment
Targeted scans parameter；
The target object is scanned according to the targeted scans parameter, it is corresponding with the targeted scans moment to update
Scan data.
3. according to the method described in claim 2, it is characterized in that, it is described redefine with the target acquisition moment it is corresponding
Targeted scans parameter before, further includes:
The shimming parameter of the magnetic resonance system is adjusted, wherein the adjustment includes restarting；And/or to described
Target object is scanned posture prompting.
4. the method according to claim 1, wherein at least one of described basis spectral characteristic is to the magnetic
The sweep parameter of resonance spectral scan is adjusted, comprising:
If the half peak height width is not in and presets in high wide scope and/or the curve symmetry is unsatisfactory for default symmetry item
Part then generates prompt information, wherein the prompt information be used for prompt target object adjustment area-of-interest position and/or
For prompting the user whether to stop present scan.
5. the method according to claim 1, wherein at least one of described basis spectral characteristic is to the magnetic
The sweep parameter of resonance spectral scan is adjusted, comprising:
If the water signal chemical shift, the wide and described curve symmetry of the half peak height are all satisfied preset condition, obtain
The offset deviation of the water signal chemical shift, and the scan data that the Magnetic Resonance Spectrum is scanned according to the offset deviation
Frequency departure be corrected.
6. a kind of magnetic resonance system spectral scan method, the magnetic resonance system includes monitoring modular and image-forming module, the prison
It surveys module and monitoring data sequent is set, imaging sequence is arranged in the image-forming module, which comprises
Target object target area is excited using monitoring data sequent, to obtain monitoring signals；
The motion state of target area or the state of magnetic resonance system are determined according to the monitoring signals；
In the case where the motion state of the target area or the state of magnetic resonance system meet and impose a condition, imaging is utilized
Sequence excites target object target area, to obtain imaging signal；
The wave spectrum image of the target area is obtained according to imaging signal.
7. a kind of Magnetic Resonance Spectrum scan adjusting device characterized by comprising
Signal acquisition module, in the water signal of the target area of target acquisition moment acquisition target object, wherein the mesh
The mark acquisition moment is included in start Magnetic Resonance Spectrum scanning before and/or at least one of Magnetic Resonance Spectrum scanning process it is default
Moment；
Water signal processing module obtains the spectral characteristic of the water signal for carrying out feature extraction to the water signal, wherein
The spectral characteristic include that water signal chemical shift, half peak height be wide and curve symmetry at least one of；
Sweep parameter adjusts module, for being joined according at least one described spectral characteristic to the scanning that the Magnetic Resonance Spectrum scans
Number is adjusted.
8. a kind of magnetic resonance system spectral scan device, which is characterized in that magnetic resonance system includes monitoring modular and image-forming module,
Monitoring data sequent is arranged in the monitoring modular, and imaging sequence, the magnetic resonance system spectral scan device is arranged in the image-forming module
Include:
Monitoring signals obtain module, for exciting target object target area using monitoring data sequent, to obtain monitoring signals；
State determining module, for determining the motion state of target area or the shape of magnetic resonance system according to the monitoring signals
State；
Imaging signal obtains module, for meeting setting in the motion state of the target area or the state of magnetic resonance system
In the case where condition, target object target area is excited using imaging sequence, to obtain imaging signal；
Wave spectrum image collection module, for obtaining the wave spectrum image of the target area according to imaging signal.
9. a kind of equipment characterized by comprising
One or more processors；
Memory, for storing one or more programs,
When one or more of programs are executed by one or more of processors, so that one or more of processors are real
Existing Magnetic Resonance Spectrum scanning adjusting method a method as claimed in any one of claims 1 to 5 and/or magnetic resonance system as claimed in claim 6
System spectral scan method.
10. a kind of computer readable storage medium, is stored thereon with computer program, realized such as when which is executed by processor
Claim 1-5 any the Magnetic Resonance Spectrum scanning adjusting method and/or magnetic resonance system wave as claimed in claim 6
Compose scan method.
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