CN104274174B - The control method and device of magnetic resonance imaging - Google Patents
The control method and device of magnetic resonance imaging Download PDFInfo
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- CN104274174B CN104274174B CN201310270450.8A CN201310270450A CN104274174B CN 104274174 B CN104274174 B CN 104274174B CN 201310270450 A CN201310270450 A CN 201310270450A CN 104274174 B CN104274174 B CN 104274174B
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Abstract
A kind of control method of magnetic resonance imaging, methods described include：First parameter sets are set, and first parameter sets include the default information of common parameter, and the common parameter is applied to all pulse trains of magnetic resonance imaging；At least one second parameter sets are set, and second parameter sets include the default information of peculiar parameter, and the peculiar parameter is applied to the individual pulse sequence of magnetic resonance imaging；First parameter sets and corresponding parameter sets are called based on specified pulse train, to generate the parameter configuration of the pulse train specified；The corresponding parameter sets include the second parameter sets corresponding to the pulse train specified.Technical solution of the present invention can with convenient and simple realize increase, change or deletion to the pulse train of magnetic resonance imaging etc., and then simply and effectively magnetic resonance imaging can be controlled, and improve magnetic resonance system process performance and extended capability.
Description
Technical field
The present invention relates to mr imaging technique, more particularly to a kind of control method and device of magnetic resonance imaging.
Background technology
Magnetic resonance（Magnetic Resonance, MR）Imaging is to utilize stationary magnetic field caused by magnetic resonance magnet, is passed through
Control to radio system and gradient system, magnetic resonance signal is excited by radio system and received, utilizes gradient magnetic pair
Sample excite selecting layer and space encoding, to obtain a kind of tomograph imaging method for possessing spatial positional information.Magnetic resonance is set
Standby major function is to perform related pulse train to be controlled the magnetic resonance equipment, and then forms MRI.
The pulse train is the combination of radio-frequency pulse and gradient pulse, specifically when referring to radio-frequency pulse, gradient fields and signal acquisition
The setting of the relevant parameters such as quarter and its arrangement in sequential, during magnetic resonance imaging, by performing the pulse sequence
Row, each part cooperation of magnetic resonance system is controlled, realize that various magnetic resonance imagings etc. are applied.
For different magnetic resonance imaging demands, it is necessary to develop different pulse train, common pulse train has gradient
Echo sequence, spin-echo sequence etc..
Generally a pulse train is performed, it is necessary to set a variety of magnetic resonance parameters information contained by the pulse train,
Such as radio frequency parameter, gradient field parameters, K spatial parameters, lamella positioning relevant parameter, coil parameter, reconstruction parameter etc..The magnetic
Resonance parameter is a complicated parameter sets, and quantity is more and often also has certain dependence, prior art between parameter
In, all parameters are all fixedly installed together in magnetic resonance system, if some certain pulses sequence for magnetic resonance imaging
Row need to increase, delete or change one peculiar parameter, it is necessary to the corresponding system file for changing whole magnetic resonance system, with
It is set to be applied to other magnetic resonance pulse sequences, during magnetic resonance imaging, for contained by the specific sequence of pulses
Peculiar parameter increase, deletion or modification process it is cumbersome, method is complicated, and influences whether other pulse sequences simultaneously
Row, and then whole magnetic resonance system is influenceed, reduce the process performance and extended capability of magnetic resonance system.For issuing new pulse
During sequence, need also exist for all changing the pulse train of whole system accordingly, method is complicated, influences systematic function.
The content of the invention
The present invention solves the problems, such as it is in magnetic resonance imaging, and magnetic resonance imaging control is complicated, and magnetic resonance system sequence
The problem of extended capability is low.
To solve the above problems, the present invention provides a kind of control method of magnetic resonance imaging, including：A kind of magnetic resonance imaging
Control method, including：First parameter sets are set, and first parameter sets include the default information of common parameter, described
Common parameter is applied to all pulse trains of magnetic resonance imaging；And at least one second parameter sets are set, described second
Parameter sets include the default information of peculiar parameter, and the peculiar parameter is applied to the individual pulse sequence of magnetic resonance imaging；With
And first parameter sets and corresponding parameter sets are called based on specified pulse train, to generate the pulse sequence specified
The parameter configuration of row；The corresponding parameter sets include the second parameter sets corresponding to the pulse train specified；According to
The pulse train of the parameter configuration generation driving magnetic resonance equipment scanning.
Optionally, it is described that first parameter sets and corresponding parameter sets are called based on specified pulse train, with life
Parameter configuration into the pulse train includes：First parameter sets are called, will be public in first parameter sets
The default information of parameter is added to the parameter configuration；Call second parameter set for corresponding to the pulse train specified
Close, the default information of the peculiar parameter in the second parameter sets called is added to the parameter configuration.
Optionally, second parameter sets also include the modification information of common parameter；It is described based on specified pulse sequence
Row call first parameter sets and corresponding parameter sets, are also included with generating the parameter configuration of the pulse train：With institute
The modification information of common parameter in the second parameter sets called replaces the acquiescence of identical common parameter in the parameter configuration
Information.
Optionally, the default information includes the default value of parameter value and/or the attribute information of acquiescence.
Optionally, the control method of the magnetic resonance imaging also includes：At least one 3rd parameter sets are set, described
Three parameter sets include the parameter value of the common parameter and/or peculiar parameter suitable for individual pulse sequence；The corresponding parameter
Set also includes the 3rd parameter sets corresponding to the pulse train specified；It is described that institute is called based on specified pulse train
The first parameter sets and corresponding parameter sets are stated, are also included with generating the parameter configuration of the pulse train：Call the correspondence
In the 3rd parameter sets of the pulse train specified, with the common parameter in the 3rd parameter sets called and/or spy
The parameter value that the parameter value for having parameter finally determines as identical common parameter in the parameter configuration and/or peculiar parameter.
Optionally, the common parameter includes：Basic parameter, lamella positional parameter, K spatial parameters, magnetization prepare parameter
At least one of with reconstruction parameter.
Optionally, first parameter sets, the second parameter sets and the 3rd parameter sets are recorded in parameter configuration files
In.
To solve the above problems, technical solution of the present invention also provides a kind of control device of magnetic resonance imaging, including：First
Setting unit, for setting the first parameter sets, first parameter sets include the default information of common parameter, described public
Parameter is applied to all pulse trains of magnetic resonance imaging；Second setting unit, for setting at least one second parameter sets,
Second parameter sets include the default information of peculiar parameter, and the peculiar parameter is applied to the individual pulse of magnetic resonance imaging
Sequence；Call unit, for calling first parameter sets and corresponding parameter sets based on specified pulse train, with generation
The parameter configuration of the pulse train specified；The corresponding parameter sets include the corresponding to the pulse train specified
Two parameter sets；Impulse generator, for generating the pulse train of driving magnetic resonance equipment scanning according to parameter configuration.
Optionally, the call unit includes：First call unit, for calling first parameter sets, by described in
The default information of common parameter in first parameter sets is added to the parameter configuration；Second call unit, for calling
The second parameter sets corresponding to the pulse train specified are stated, by the peculiar parameter in the second parameter sets called
Default information is added to the parameter configuration.
Optionally, second parameter sets also include the modification information of common parameter；The call unit also includes：Replace
Unit is changed, it is identical in the parameter configuration for being replaced with the modification information of the common parameter in the second parameter sets for being called
The default information of common parameter.
Optionally, the control device of the magnetic resonance imaging also includes：3rd setting unit, for setting at least one
Three parameter sets, the 3rd parameter sets include the ginseng of the common parameter and/or peculiar parameter suitable for individual pulse sequence
Numerical value；The corresponding parameter sets also include the 3rd parameter sets corresponding to the pulse train specified；It is described to call list
Member also includes：3rd call unit, for calling the 3rd parameter sets for corresponding to the pulse train specified, with institute
The parameter value of common parameter and/or peculiar parameter in the 3rd parameter sets called is as identical public in the parameter configuration
The parameter value that parameter and/or peculiar parameter finally determine.
Compared with prior art, technical scheme has advantages below：
By setting the first parameter sets by the common parameter of all pulse trains, and contained by different pulse train
The peculiar parameter having, the second different parameter sets are correspondingly arranged, and then first ginseng is called based on specified pulse train
The corresponding parameter sets of the second parameter sets corresponding to the pulse train specified are closed and included to manifold, to generate the finger
The method of the parameter configuration of fixed pulse train, can with convenient and simple realize increase to the pulse train of magnetic resonance imaging,
Change or deletion etc., and then simply and effectively magnetic resonance imaging can be controlled, improve the process performance of magnetic resonance system
And extended capability.
Further, the side of the 3rd parameter sets is set by the parameter value of the parameter as contained by single magnetic resonance pulse sequence
Method, for different magnetic resonance imaging demands, if simply specifying the parameter value of pulse train to change, only it can need to change institute
The 3rd parameter sets corresponding to specific pulse sequence are stated, do not have to carry out any change for the first parameter sets, the second parameter sets
It is dynamic, while will not also any influence be produced on other sequences, can be easily for specific clinical practice control magnetic resonance arteries and veins
Rush sequence.
Further, can the different rank of the parameter setting to different sets, for the identical of the different sets
Common parameter or peculiar parameter, then the low parameter information of rank directly can be replaced with the high parameter information of rank, ensured single
The validity of the parameter information of pulse train, effectively control individual pulse sequence parameter configuration, and then realize to magnetic resonance into
Effective control of picture.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the control method for the magnetic resonance imaging that the embodiment of the present invention one provides；
Fig. 2 is the schematic flow sheet of the control method for the magnetic resonance imaging that the embodiment of the present invention two provides；
Fig. 3 is the schematic flow sheet of the control method for the magnetic resonance imaging that the embodiment of the present invention three provides；
Fig. 4 is the schematic flow sheet of the control method for the magnetic resonance imaging that the embodiment of the present invention four provides.
Embodiment
Magnetic resonance imaging system can be divided into three major parts, magnet part, spectrometer part and computer part by function.Magnetic
Body portion is responsible for providing polarizing magnetic field, spatial encoding gradient magnetic field and radio-frequency coil.Spectrometer part major control radio-frequency transmissions and
Receiver system performs pulse train, produces magnetic resonance signal and gathers view data, the spectrometer system contains pulse train
Generator, pulse-series generator are responsible for producing pulse train stable at a high speed during whole system is run.Computer part
It can be that the radio-frequency unit of spectrometer produces the pulse signal needed, provide gradient waveform signal for gradient amplifier, and provide each
Kind of control signal can also be handled the data-signal collected, be established MRI with the operation of each part of controller unit, and
The processing such as obtained image is shown and exported.
During magnetic resonance imaging, MR imaging apparatus is directed to different magnetic resonance imaging demands, passes through execution
The pulse train specified, each part cooperation of magnetic resonance system is controlled, realizes various magnetic resonance imagings.Currently used pulse
Sequence has spin-echo sequence（Spin Echo, SE）, gradin-echo（Gradient Echo, GRE）And echo planar imaging
Sequence（Echo Planer Imaging, EPI）Etc..Wherein, its advantage of the spin-echo sequence can overcome magnetic field
Inhomogeneities, its shortcoming are that sweep speed is slow, are mainly used in conventional soft-tissue imaging.GRE is to use positive and negative gradient combination
The sequence of echo is obtained, is mainly used in dynamic scan and blood vessel imaging.And EPI sequences are needed to use for cerebral function imaging, its
Feature is very fast, and vortex caused by magnetic field bump, gradient switching is all more sensitive.
In magnetic resonance imaging, when performing the pulse train, it is necessary to set a variety of contained by the pulse train
Magnetic resonance parameters information, conventionally, as all parameter of magnetic resonance system is all fixedly installed in systems, and due to
The magnetic resonance parameters that different pulse train contains are different, so to the peculiar parameter contained by specific sequence of pulses
, it is necessary to the system file of whole magnetic resonance system be changed, so that it is applied to other magnetic resonance when increase, deletion or modification
Pulse train, process is cumbersome, and method is complicated, reduces the process performance of magnetic resonance system.And for issuing new pulse train
When, need also exist for all changing the pulse train of whole system accordingly, method is complicated, influences systematic function.
In a variety of magnetic resonance parameters information contained by pulse train, some magnetic resonance parameters be all pulse trains all
The common parameter needed, such as some basic parameters, lamella positional parameter, K spatial parameters, magnetization preparation parameter and reconstruction parameter
Deng, and some magnetic resonance parameters are parameters specific to specific pulse train, for example " radio frequency disturbs phase " magnetic resonance parameters are GRE
Parameter specific to sequence, and " drive back balance " magnetic resonance parameters are parameters specific to fast acquisition interleaved spin echo.Inventor
Analysis, can be by the certain pulses in the increase to the peculiar parameter contained by specific sequence of pulses, deletion or modification
Peculiar parameter contained by sequence is extracted from all parameters of all pulse trains, and only the parameter extracted is increased
Add, delete or change, then increased, delete or repaiied by the public parameter of all pulses and the process extracted again
Peculiar parameter after changing forms the specific sequence of pulses, and so other pulse trains can not be impacted, similarly for
During newly-increased pulse train, can the common parameter of parameter and all pulse trains as specific to the newly-increased pulse train obtain
The parameter information of the pulse train of new series, it so can quickly and easily increase a pulse newly, and will not be to other pulses
Sequence impacts, and then can simply, easily realize the control to magnetic resonance imaging.Based on above-mentioned analysis, inventor carries
Go out a kind of control method of magnetic resonance imaging, including：First parameter sets are set, and first parameter sets include common parameter
Default information, the common parameter be applied to magnetic resonance imaging all pulse trains；At least one second parameter set is set
Close, second parameter sets include the default information of peculiar parameter, and the peculiar parameter is applied to the single of magnetic resonance imaging
Pulse train；First parameter sets and corresponding parameter sets are called based on specified pulse train, to generate described specify
Pulse train parameter configuration；The corresponding parameter sets include the second parameter set corresponding to the pulse train specified
Close, drive magnetic resonance equipment to be scanned according to the parameter configuration of the pulse train of generation.
Technical solution of the present invention is described in detail below in conjunction with flow chart and specific embodiment.In the implementation of the present invention
In example, using three SE pulse trains, GRE pulse trains and EPI pulse trains individual pulse sequences as containing peculiar parameter
Pulse train exemplified by the control method of magnetic resonance imaging is illustrated.
Embodiment one
In the present embodiment, by the common parameter of all pulse trains in magnetic resonance imaging（Namely all pulse trains
All shared parameters）A parameter sets are arranged to, by the peculiar parameter of the individual pulse sequence of magnetic resonance imaging（It is namely every
Individual pulse train is different from the parameter of other pulse trains）It is set to correspond to the parameter sets of the individual pulse sequence.For
Easily the magnetic resonance parameters of pulse train can be controlled, to obtain the magnetic resonance parameters of different pulse trains, most
Magnetic resonance equipment can be controlled to complete scanning eventually, different ranks can be set to the different parameter sets.Such as by institute
The common parameter set for stating all pulse trains is arranged to Primary parameter set, for multiple specific arteries and veins containing peculiar parameter
Multiple secondary parameters set can be set accordingly by rushing sequence.For example, for the SE pulse trains, GRE pulse trains and
EPI pulse trains, the common parameter of three pulse train and other pulse trains of magnetic resonance system can be set
For Primary parameter set, the peculiar parameter of SE pulse trains is arranged to a secondary parameters collection corresponding to SE pulse trains
Close, the peculiar parameter of GRE pulse trains is arranged to a secondary parameters set corresponding to GRE pulse trains, by EPI pulses
The peculiar parameter of sequence is arranged to a secondary parameters set corresponding to EPI pulse trains.
Fig. 1 is the schematic flow sheet of the control method for the magnetic resonance imaging that the present embodiment provides, as shown in figure 1, holding first
Row step S101, determines the common parameter contained by all pulse trains.
Determine the common parameter that all pulse trains of magnetic resonance imaging system are required for, such as some basic parameters, lamella
Positional parameter, K spatial parameters, magnetization prepare parameter and reconstruction parameter etc..For example, the basic parameter can be when repeating
Between（TR）, the echo time（TE）, flip angle etc., the lamella positional parameter can be slice position, azimuth, number of plies etc., institute
It can be readout resolution, phase code resolution ratio etc. to state K spatial parameters, and it can be fatty saturation letter that the magnetization, which prepares parameter,
Breath, inversion recovery information etc., the reconstruction parameter can be filtering information, interpolation information etc..
Step S102, the default information of the common parameter is set.
The default information of the common parameter includes the default value of the parameter value of the common parameter and the attribute letter of acquiescence
Cease, either the default information of the common parameter includes the default value of the parameter value of the common parameter or the public ginseng
Several default informations includes the attribute information of the acquiescence of the common parameter.The attribute information includes title, the parameter of parameter
The type of value, span of parameter value etc..For example, can be with the acquiescence of the parameter value of arrange parameter for the repetition time
It is worth for 4000ms, parameter name TR, the type of parameter value are numerical value, the span of parameter value is 10ms to 100000ms.
Step S103, Primary parameter set is set.
Common parameter contained by all pulse trains of step S101 and step S102 determinations and its default information are set
Primary parameter set is set to, the process for being arranged to Primary parameter set can be configured using a variety of methods, for example, can
, can also be by it so that the common parameter contained by all pulse trains and its default information are recorded in an information table
It is recorded in XML format file, can also be configured using other manner, as long as by each common parameter and its corresponding silent
Recognize information to be recorded, specific method is not limited thereto.
Step S104, determine the peculiar parameter contained by individual pulse sequence.
In the present embodiment, the peculiar parameter contained by SE pulse trains, the peculiar ginseng contained by GRE pulse trains are determined
Peculiar parameter contained by number and EPI pulse trains.
Step S105, the default information of the peculiar parameter contained by individual pulse sequence is set.
The ginseng of peculiar parameter contained by the SE pulse trains, GRE pulse trains and EPI pulse trains is set respectively
The default value of numerical value and/or the attribute information of acquiescence, the class of default value, parameter value such as to the parameter value of the peculiar parameter
Type, span of parameter value etc. set default value.
Step S106, secondary parameters set is set.
The peculiar parameter and its default information contained by SE pulse trains that step S104 and step S105 is determined are set
For the secondary parameters set corresponding to SE pulse trains, contained by the GRE pulse trains that step S104 and step S105 is determined
Peculiar parameter and its default information be set to correspond to the secondary parameters set of GRE pulse trains, by step S104 and step
The peculiar parameter and its default information contained by EPI pulse trains that S105 is determined are set to correspond to the two of EPI pulse trains
Level parameter sets.
The present embodiment calls first parameter sets and corresponding parameter sets based on specified pulse train, with generation
The parameter configuration of the pulse train specified includes step S107 and S108；The corresponding parameter sets are included corresponding to described
Second parameter sets of the pulse train specified.
Step S107 is performed, common parameter and its default information recorded in Primary parameter set is called, is added
To parameter configuration.
Step S108 is performed, calls the peculiar parameter and its acquiescence of the individual pulse sequence recorded in secondary parameters set
Information, add it to parameter configuration.
For example, during magnetic resonance imaging, MR imaging apparatus is directed to different magnetic resonance imaging demands,
Different pulse train can be specified to be used for magnetic resonance imaging, for example, when needing to carry out cerebral function imaging, it will usually specify
Using EPI pulse trains, it is necessary to drive magnetic resonance equipment to be scanned by EPI pulse trains, now, magnetic resonance equipment
Operating personnel can select EPI pulse trains as the pulse train specified, magnetic by the system operatio interface of magnetic resonance equipment
Resonator system is based on EPI pulse trains and calls the first parameter sets and corresponding parameter sets, i.e., need to only be called by step S107
Common parameter and its default information recorded in Primary parameter set, add it in parameter configuration, then pass through step
S108 call the peculiar parameter of the EPI pulse trains recorded in secondary parameters set corresponding to the EPI pulse trains and its
Default information, added in parameter configuration, as all ginsengs required for the parameter configuration can obtain EPI pulse trains
Number information, that is, obtain the parameter configuration corresponding to EPI pulse trains.
The parameter configuration can use various ways to represent, can be recorded in an information table, can also be remembered
Record is not limited thereto in XML format file.The parameter configuration can be by specified pulse with the pulse train specified
The title of sequence is corresponded, for example, when generating parameter configuration, the name of corresponding pulse train can be referred to as into one
Individual item of information is recorded in the parameter configuration simultaneously, then when obtaining the parameter configuration corresponding to EPI pulse trains, if institute
The title for stating pulse train of the pulse title with specifying in parameter configuration is identical, you can determine the parameter configuration be corresponding to
The parameter configuration of EPI pulse trains.
Step S109, the pulse train of driving magnetic resonance equipment scanning is generated according to the parameter configuration.
In the present embodiment, can be by computer executed step S101 to step S108, can be by arteries and veins in step S109
The pulse train that generator generates driving magnetic resonance equipment scanning according to the parameter configuration is rushed, then passes through the pulse train
Magnetic resonance equipment is driven to carry out magnetic resonance imaging.
So far complete the control to magnetic resonance imaging, in the present embodiment, if necessary to enumerate SE pulse trains,
When parameter specific to GRE pulse trains or EPI pulse trains some sequence therein is modified, if for example,
When needing to change the parameter type of " radio frequency disturbs phase " magnetic resonance parameters specific to GRE pulse trains, it is only necessary to
The parameter type of " radio frequency disturbs phase " magnetic resonance parameters in the secondary parameters set corresponding to GRE pulse trains is changed, without repairing
Change Primary parameter set, the secondary parameters set corresponding to SE pulse trains and the secondary parameters corresponding to EPI pulse trains
Set.Swept for carrying out magnetic resonance to brain function corresponding to the parameter configuration driving magnetic resonance equipment of EPI pulse trains in execution
The process retouched does not have any influence.Equally, if necessary to increase a pulse train newly, then only need as contained by newly-increased pulse train
The peculiar parameter setting having one corresponds to the secondary parameters set of newly-increased pulse train, without its to magnetic resonance system
Its pulse train carries out any modification.
It can be seen from above-described embodiment that by suitable for all parameter settings of all pulse trains of magnetic resonance imaging
For the parameter sets of different stage, any one pulse train can obtain the public of pulse train from Primary parameter set
Argument section, and can be controlled simultaneously for its distinctive parameter by its corresponding secondary parameters set, Ke Yiyou
Effect, the simple parameter configuration for obtaining individual pulse sequence, and then realize the control to magnetic resonance imaging.
Further, equally can be only to described in the increase of the peculiar parameter for individual pulse, deletion or modification
The parameter of secondary parameters set corresponding to individual pulse is accordingly increased, deleted or changed, without being total to system
Primary parameter set is changed, and does not also interfere with the normal use of other pulse trains, equally in newly-increased pulse sequence
When row, also only need to correspond to increase a secondary parameters set, the above method can easy and effective control pulse train, enter
And magnetic resonance imaging is controlled, method is simple, effectively improves system process performance.
It should be noted that in above-described embodiment, the acquiescence of the common parameter of all pulse trains of magnetic resonance imaging
The default information of the peculiar parameter of information and individual pulse sequence is preset in one-level, secondary parameters set, other
In embodiment, the relevant parameter information of the common parameter and peculiar parameter can also pass through magnetic resonance system by user
Operation interface is directly inputted, can also be by the partial parameters of the partial parameters information of the common parameter and peculiar parameter
Information default is in one-level, secondary parameters set, and another part information, such as some clinical practice arrange parameters, then in magnetic
During resonance image-forming, inputted by user by the operation interface of magnetic resonance system.
Embodiment two
During magnetic resonance imaging, it may be also required to the portion in some common parameters using individual pulse sequence
Point information is modified, if directly modified to the common parameter in Primary parameter set, other need not can be changed
The pulse train of the common parameter impacts, and reduces systematic function.It is therefore possible to use set in secondary parameters set
The modification information of common parameter changed is needed, when generating parameter configuration, calls in secondary parameters set and the one-level is joined
The modification information for the common parameter that manifold is closed, the default information of common parameter, obtains final parameter and matches somebody with somebody in alternative parameter configuration
Confidence ceases.
Fig. 2 is the schematic flow sheet of the control method for the magnetic resonance imaging that the present embodiment provides, as shown in Fig. 2 holding first
Row step S201, Primary parameter set is set.
The common parameter contained by all pulse trains is determined, the default information of the common parameter is set, and then is set
Primary parameter set, detailed process refer to the step S101 to step S103 in embodiment one.
Step S202, secondary parameters set is set.
The peculiar parameter contained by individual pulse sequence is determined, writing from memory for the peculiar parameter contained by individual pulse sequence is set
Recognize information, detailed process refer to the step S104 to step S105 in embodiment one.
It is with the difference of embodiment one, is also recorded in secondary parameters set one described in the individual pulse sequence pair
The modification information of the common parameter of level parameter sets.
The modification information of the common parameter is the modification to the default information of common parameter, including for common parameter
The modification of the default value of parameter value and/or the attribute information of acquiescence.
In the present embodiment, set respectively corresponding to SE pulse trains, corresponding to GRE pulse trains and corresponding to EPI
The secondary parameters set of pulse train.
For example, if the SE pulse trains need to enter the basic parameter information repetition time TR in common parameter
Row modification, such as 2 times of repetition time TR that SE pulse trains need to be revised as repetition time TR in original common parameter
Value, then need to record this modification information in the secondary parameters set corresponding to SE pulse trains, and if GRE pulse trains with
And EPI pulse trains are not modified to the common parameter of the Primary parameter set, then without record modification information.
The present embodiment calls first parameter sets and corresponding parameter sets based on specified pulse train, with generation
The parameter configuration of the pulse train specified includes step S203 to S205.
Step S203 is performed, common parameter and its default information recorded in Primary parameter set is called, is added
To parameter configuration.
Step S204 is performed, calls the peculiar parameter and its acquiescence of the individual pulse sequence recorded in secondary parameters set
Information, add it to parameter configuration.
The step S107 that step S203 to step S204 is corresponded respectively in embodiment one to step S108.
Step S205 is performed, institute is replaced with the modification information of the common parameter recorded in the secondary parameters set called
State the default information of identical common parameter in parameter configuration.
When calling the Primary parameter set, secondary parameters set to generate the parameter configuration of the specific pulse sequence, with
Identical common parameter is silent in the modification information replacement parameter configuration of common parameter in the secondary parameters set called
Recognize information, i.e., public ginseng in being configured using the modification information of the common parameter in the secondary parameters set called as final argument
Several parameter informations.
If the specific pulse sequence need not modify to the common parameter of the Primary parameter set, two level ginseng
Manifold does not record the common parameter of Primary parameter set described in individual pulse sequence pair modification information in closing then need not
This step is performed, that is, directly invokes the Primary parameter set, secondary parameters set generates the parameter of the specific pulse sequence
Configuration.For example, gathering the demand of image according to magnetic resonance equipment, specify using SE pulse trains progress magnetic resonance imaging, and by
Need to modify to common parameter TR in SE sequences, so in the parameter configuration using above method generation specific pulse sequence
When, with the modification information for the TR being recorded in the secondary parameters set for corresponding to SE individual pulses（Parameter information）Directly replace SE
The default information of TR in parameter configuration corresponding to sequence, corresponded to being recorded in the secondary parameters set of SE individual pulses
Final parameter information of the TR modification information as the parameter TR contained by the SE pulses.
Step S206 is performed, the pulse train of driving magnetic resonance equipment scanning is generated according to the parameter configuration.Can be by
Impulse generator generates the pulse train of driving magnetic resonance equipment scanning according to the parameter configuration, is driven by the pulse train
Dynamic magnetic resonance equipment carries out magnetic resonance imaging.
It can be seen from above-described embodiment that need the public ginseng to all pulse trains for individual pulse sequence
When partial information in number is modified, modified without to one-level common parameter set, only need to be in the individual pulse
Record modification information in corresponding secondary parameters set, when generating the parameter configuration of the individual pulse sequence, directly use institute
State the acquiescence of identical common parameter in the modification information alternative parameter configuration recorded in secondary parameters set corresponding to individual pulse
Information, so as to effectively avoid in the prior art to result in the need for all pulse train all common parameter modification
The problem of modifying, effectively improve systematic function.
Embodiment three
With the fast development of mr imaging technique, in order to adapt to the demand of different magnetic resonance imagings, existing
On the basis of pulse train, more pulse trains can be produced by simple, appropriate deformation, and some deformations may be only
It is that different changes is carried out to the parameter value of parameter on the basis of original pulse train.For the more convenient ginseng to pulse train
Number is controlled, can be by the parameter value of pulse train separately as a set, more easily to meet clinical practice
Various demands.
In the present embodiment, one-level is arranged to as the common parameter contained by all pulse trains and its default parameters information
Parameter sets, set as the peculiar parameter information contained by individual pulse sequence and its default information and correspond to the individual pulse
The secondary parameters set of sequence, the parameter value of the common parameter of individual pulse sequence and/or peculiar parameter is set to correspond to
The three-level parameter sets of the individual pulse sequence.In three-level parameter sets can a recording needle to the one of individual pulse sequence
The parameter value of individual, several or whole common parameters；Can also a recording needle to one of individual pulse sequence, it is several or all special
There is the parameter value of parameter；Can also both recording needle to one of individual pulse sequence, several or whole common parameters parameter values,
One, several or all peculiar parameter parameter value of the recording needle to individual pulse sequence again.
The present embodiment is described in detail with reference to particular flow sheet, as shown in figure 3, step S301 is first carried out,
Primary parameter set is set.The common parameter contained by all pulse trains is determined, the default information of the common parameter is set,
And then Primary parameter set is set.Set common parameter default information when, can to the title of parameter, the type of parameter value with
And span of parameter value etc. is set, while one default value can also be set for the parameter value of parameter.Specific mistake
Journey refer to the step S101 to step S103 in embodiment one.
Step S302, secondary parameters set is set.The peculiar parameter contained by individual pulse sequence is determined, single arteries and veins is set
The default information of the peculiar parameter contained by sequence is rushed, and then secondary parameters set is set.For different individual pulse sequences,
Multiple secondary parameters set corresponding to different individual pulse sequences can be set.Set herein contained by individual pulse sequence
Peculiar parameter default value when, can taking to the parameter name of the peculiar parameter, the type of parameter value and parameter value
Value scope etc. is set, while can also set a default value to the parameter value of peculiar parameter.Detailed process refer to reality
Apply the step S104 to step S106 in example one.
Step S303, determine common parameter, the parameter value of peculiar parameter contained by the individual pulse sequence.
The parameter value of common parameter, peculiar parameter contained by the individual pulse sequence can refer to individual pulse sequence
The parameter value of contained common parameter or the parameter value for referring to the peculiar parameter contained by individual pulse sequence, also may be used
To refer to common parameter contained by individual pulse sequence and all parameter value of peculiar parameter.
In this step, it is determined that be only the individual pulse sequence contained by common parameter, the ginseng of peculiar parameter
Numerical value, it is not related to the value of the parameter name of the common parameter and/or peculiar parameter, the type of parameter value and parameter value
Scope etc..
Step S304 is performed, three-level parameter sets are set.
By common parameter, the parameter value of peculiar parameter contained by the individual pulse sequence determined in step S303
It is set to correspond to the three-level parameter sets of the individual pulse sequence.For example, can by the common parameter contained by SE sequences,
The parameter value of peculiar parameter is set to correspond to the three-level parameter sets of SE pulse trains, by the public ginseng contained by GRE sequences
The parameter value of several, peculiar parameter is set to correspond to the three-level parameter sets of GRE pulse trains, by the public affairs contained by EPI sequences
Parameter, the parameter value of peculiar parameter are set to correspond to the three-level parameter sets of EPI pulse trains altogether.
The process for being arranged to three-level parameter sets can be configured using a variety of methods, for example, can be by described in
The parameter value of common parameter and/or peculiar parameter contained by individual pulse sequence is recorded in an information table, can also be incited somebody to action
It is recorded in XML format file, can also be configured using other manner.
The present embodiment calls first parameter sets and corresponding parameter sets based on specified pulse train, with generation
The parameter configuration of the pulse train specified includes step S305 to S307.
Step S305 is performed, common parameter and its default information recorded in Primary parameter set is called, is added
To parameter configuration.
Step S306 is performed, calls the peculiar parameter and its acquiescence of the individual pulse sequence recorded in secondary parameters set
Information, add it to parameter configuration.
Step S305 to step S306 may be referred to the step S107 to step S108 in embodiment one respectively, herein no longer
Repeat.
Step S307 is performed, common parameter, the parameter value of peculiar parameter in three-level parameter sets are called, in parameter configuration
In, configuration common parameter, the parameter value of peculiar parameter.
The configuration common parameter, the parameter value of peculiar parameter refer to the public ginseng in the three-level parameter sets are called
During the parameter value of several, peculiar parameter, if the common parameter of specific pulse sequence described in parameter configuration, the parameter of peculiar parameter
Value parameter value corresponding with three-level parameter sets differs, then by the parameter value alternative parameter configuration in three-level parameter sets
Corresponding common parameter, the parameter value of peculiar parameter；If the common parameter of specific pulse sequence described in parameter configuration, spy
The parameter value for having parameter is not configured（It is not provided with the default value of parameter value）, then by the parameter value in three-level parameter sets
It is added in parameter configuration.
It should be noted that join in above-mentioned generated by Primary parameter set, secondary parameters set and three-level parameter sets
During number configuration, for parameter value of the parameter in Primary parameter set, secondary parameters set in three-level parameter sets
Corresponding process in, because three-level parameter sets comprise only parameter value in the present embodiment, without the information such as parameter name, institute
, can be in three-level parameter sets according to by Primary parameter set and two level ginseng can not be corresponded by parameter name
The order of parameter determined by number, the size of setup parameter value is corresponded successively, for using Primary parameter set or two
The place of the parameter value of level parameter sets acquiescence, then can use " 0 " or " 1 " to represent to use default information, match somebody with somebody in generation parameter
When putting, directly using default information.In other embodiments, three-level parameter sets can equally be believed simultaneous with parameter name
Breath, then can by with parameter of the parameter name information realization in Primary parameter set, secondary parameters set one by one
It is corresponding, then it now can only retain the parameter value without using default information in three-level parameter sets.
Step S308 is performed, the pulse train of driving magnetic resonance equipment scanning is generated according to the parameter configuration.Can be by
Impulse generator generates the pulse train of driving magnetic resonance equipment scanning according to the parameter configuration, is driven by the pulse train
Dynamic magnetic resonance equipment carries out magnetic resonance imaging.
In the above-described embodiments, can be with by being separately provided parameter sets to the parameter value of magnetic resonance pulse sequence parameter
More easily for specific clinical practice control magnetic resonance pulse sequence, for example, for SE sequences, if for difference
Magnetic resonance imaging demand, the SE sequences are that repetition time TR value is different, then can be only in change three-level parameter sets
Corresponding TR value, do not have to carry out any variation for Primary parameter set, secondary parameters set, while also will not be to other sequences
Row produce any influence.
Equally, if increasing a pulse train newly, then it need to only correspond to and increase a secondary parameters set and one three newly
Level parameter sets, specific method may refer to above-mentioned discussion, will not be repeated here.
Example IV
During magnetic resonance imaging, if needed during individual pulse sequence to the partial information in some common parameters
Modify, the modification information that the common parameter for needing to change is set in secondary parameters set can be used, in generation parameter
During configuration, the modification information of the common parameter in secondary parameters set to the Primary parameter set, alternative parameter configuration are called
The default information of middle common parameter, obtain final parameter configuration.
Fig. 4 is the schematic flow sheet of the control method for the magnetic resonance imaging that the present embodiment provides, as shown in figure 4, holding first
Row step S401, Primary parameter set is set.This step corresponds to the step S301 of embodiment three.
Step S402, secondary parameters set is set.
In this step, join as the peculiar parameter and its default information contained by individual pulse sequence and to the one-level
The modification information for the common parameter that manifold is closed, the secondary parameters set corresponding to the individual pulse is set, if described single
Pulse train needs to modify to the common parameter of the Primary parameter set, then also needs to record institute in secondary parameters set
State the modification information of the common parameter of Primary parameter set described in individual pulse sequence pair.Detailed process refer to the step of embodiment two
Rapid S202, will not be repeated here.
The present embodiment calls first parameter sets and corresponding parameter sets based on specified pulse train, with generation
The parameter configuration of the pulse train specified includes step S404 to S407.
Step S404 is performed, common parameter and its default information recorded in Primary parameter set is called, is added
To parameter configuration.
Step S405 is performed, calls the peculiar parameter and its acquiescence of the individual pulse sequence recorded in secondary parameters set
Information, add it to parameter configuration.
The step S305 that step S404 to step S405 is corresponded respectively in embodiment three to step S306, it is no longer superfluous herein
State.
Step S406 is performed, institute is replaced with the modification information of the common parameter recorded in the secondary parameters set called
State the default information of identical common parameter in parameter configuration.
When calling the Primary parameter set, secondary parameters set to generate the parameter configuration of the specific pulse sequence, with
Identical common parameter is silent in the modification information replacement parameter configuration of common parameter in the secondary parameters set called
Recognize information.
Step S407 is performed, common parameter, the parameter value of peculiar parameter in three-level parameter sets are called, in parameter configuration
In, configure identical common parameter, the parameter value of peculiar parameter.Detailed process refer to the step S307 of embodiment three, herein not
Repeat again.
Step S408 is performed, the pulse train of driving magnetic resonance equipment scanning is generated according to the parameter configuration.Can be by
Impulse generator generates the pulse train of driving magnetic resonance equipment scanning according to the parameter configuration, is driven by the pulse train
Dynamic magnetic resonance equipment carries out magnetic resonance imaging.
In the present embodiment, Primary parameter set is arranged to by the common parameter and its default information of all pulse trains,
Parameter and its default information as specific to individual pulse sequence, and the modification of the common parameter to the Primary parameter set
Information sets secondary parameters set, and three-level parameter sets are set as whole parameter values contained by individual pulse sequence.It is total in magnetic
Shake during imaging, if for specified pulse train, it is necessary to the acquiescence of the common parameter to the Primary parameter set
Information is modified, and need to only change the secondary parameters set corresponding to the specific pulse sequence, if necessary to change parameter value,
The three-level parameter sets corresponding to the specific pulse sequence need to only be changed.For some in the parameter configuration of specific pulse sequence
The determination of the parameter value of parameter, if the three-level parameter sets corresponding to the specific pulse sequence have the specific of the parameter
Value, then using the value of three-level parameter sets, if three-level parameter sets do not have the occurrence of the parameter, specified using described
The default value of the parameter in secondary parameters set corresponding to pulse train, if secondary parameters set does not have the parameter
Occurrence, then using the default value of the parameter in Primary parameter set.
In the above-described embodiments, the default information of the common parameter of all pulse trains of the magnetic resonance imaging, single arteries and veins
The default information of the peculiar parameter of sequence, secondary parameters set are rushed to the modification information of the common parameter of the Primary parameter set
And common parameter, the parameter value of peculiar parameter in three-level parameter sets, one-level, two level and three-level parameter can be preset at
In set, it can also be directly inputted by user by the user interface of magnetic resonance system, can also part in the various information
Information is preset in one-level, two level, three-level parameter sets, and another part information, such as some clinical practice arrange parameters, then
During magnetic resonance imaging, inputted, be not limited thereto by the operation interface of magnetic resonance system by user.
In the above-described embodiments, the parameter of pulse train is divided into two or three parameter sets, in other embodiment
In, aforesaid way is also not necessarily limited to, for example, in all pulse trains of magnetic resonance imaging, may be contained by some pulse trains
The parameter that some these pulse trains can all be used, and other sequence contains the public parameter of other, then now, can
To set Primary parameter set by the common parameter of all pulse trains, set and corresponded to by the common parameter of these pulse trains
The secondary parameters set of these pulse trains, multiple secondary parameters set can be equally set here, then by these described pulses
Peculiar parameter contained by the individual pulse sequence of sequence, set the three of the individual pulse sequence corresponded in these pulse trains
Level parameter sets, then as contained by the individual pulse sequence in these described pulse trains parameter parameter value, setting corresponds to
The four pole parameter set of individual pulse sequence in these pulse trains.Division for parameter sets, a variety of sides can be used
Formula, do not limit herein.
The control method of corresponding above-mentioned magnetic resonance imaging, technical solution of the present invention also provide a kind of control of magnetic resonance imaging
Device, described device include：First setting unit, for setting the first parameter sets, first parameter sets include public
The default information of parameter, the common parameter are applied to all pulse trains of magnetic resonance imaging；Second setting unit, for setting
At least one second parameter sets are put, second parameter sets include the default information of peculiar parameter, and the peculiar parameter is fitted
Individual pulse sequence for magnetic resonance imaging；Call unit, for calling first parameter based on specified pulse train
Set and corresponding parameter sets, to generate the parameter configuration of the pulse train specified；The corresponding parameter sets include pair
Second parameter sets of the pulse train specified described in Ying Yu；Impulse generator, it is total to for generating driving magnetic according to parameter configuration
Shake the pulse train of device scan.
Although present disclosure is as above, the present invention is not limited to this.Any those skilled in the art, this is not being departed from
In the spirit and scope of invention, it can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
The scope of restriction is defined.
Claims (11)
- A kind of 1. control method of magnetic resonance imaging, it is characterised in that including：First parameter sets are set, and first parameter sets include the default information of common parameter, and the common parameter is applicable In all pulse trains of magnetic resonance imaging；AndAt least one second parameter sets are set, and second parameter sets include the default information of peculiar parameter, described peculiar Parameter is applied to the individual pulse sequence of magnetic resonance imaging, and the peculiar parameter is correspondingly arranged with individual pulse sequence；AndFirst parameter sets and corresponding parameter sets are called based on specified pulse train, to generate the pulse specified The parameter configuration of sequence；The corresponding parameter sets include the second parameter sets corresponding to the pulse train specified；The pulse train of driving magnetic resonance equipment scanning is generated according to the parameter configuration.
- 2. the control method of magnetic resonance imaging as claimed in claim 1, it is characterised in that described based on specified pulse train First parameter sets and corresponding parameter sets are called, are included with generating the parameter configuration of the pulse train：First parameter sets are called, the default information of the common parameter in first parameter sets is added to the ginseng Number configuration；Second parameter sets for corresponding to the pulse train specified are called, by the second parameter sets called The default information of peculiar parameter is added to the parameter configuration.
- 3. the control method of magnetic resonance imaging as claimed in claim 2, it is characterised in that second parameter sets also include The modification information of common parameter；It is described that first parameter sets and corresponding parameter sets are called based on specified pulse train, to generate the pulse sequence The parameter configuration of row also includes：Identical public ginseng in the parameter configuration is replaced with the modification information of the common parameter in the second parameter sets for being called Several default informations.
- 4. the control method of magnetic resonance imaging as claimed in claim 1, it is characterised in that the default information includes parameter value Default value and/or acquiescence attribute information.
- 5. the control method of magnetic resonance imaging as claimed in claim 2 or claim 3, it is characterised in that also include：Set at least one 3rd parameter sets, the 3rd parameter sets include the common parameter and/or peculiar parameter suitable for individual pulse sequence Parameter value；The corresponding parameter sets also include the 3rd parameter sets corresponding to the pulse train specified；It is described that first parameter sets and corresponding parameter sets are called based on specified pulse train, to generate the pulse sequence The parameter configuration of row also includes：The 3rd parameter sets for corresponding to the pulse train specified are called, with the 3rd parameter sets called Common parameter and/or the parameter value of peculiar parameter are final as identical common parameter in the parameter configuration and/or peculiar parameter The parameter value of determination.
- 6. the control method of magnetic resonance imaging as claimed in claim 1, it is characterised in that the common parameter includes：Substantially Parameter, lamella positional parameter, K spatial parameters, magnetization prepare at least one of parameter and reconstruction parameter.
- 7. the control method of magnetic resonance imaging as claimed in claim 4, it is characterised in that first parameter sets, second Parameter sets and the 3rd parameter sets are recorded in parameter configuration files.
- A kind of 8. control device of magnetic resonance imaging, it is characterised in that including：First setting unit, for setting the first parameter sets, first parameter sets include the default information of common parameter, The common parameter is applied to all pulse trains of magnetic resonance imaging；Second setting unit, for setting at least one second parameter sets, second parameter sets include peculiar parameter Default information, the peculiar parameter are applied to the individual pulse sequence of magnetic resonance imaging, the peculiar parameter and individual pulse sequence Row are correspondingly arranged；Call unit, for calling first parameter sets and corresponding parameter sets based on specified pulse train, with generation The parameter configuration of the pulse train specified；The corresponding parameter sets include the corresponding to the pulse train specified Two parameter sets；Impulse generator, for generating the pulse train of driving magnetic resonance equipment scanning according to parameter configuration.
- 9. the control device of magnetic resonance imaging as claimed in claim 8, it is characterised in that the call unit includes：First call unit, for calling first parameter sets, by the silent of the common parameter in first parameter sets Recognize information and be added to the parameter configuration；Second call unit, for calling second parameter sets for corresponding to the pulse train specified, it will be called The second parameter sets in the default information of peculiar parameter be added to the parameter configuration.
- 10. the control device of magnetic resonance imaging as claimed in claim 9, it is characterised in that second parameter sets are also wrapped Include the modification information of common parameter；The call unit also includes：Replacement unit, for replacing the parameter configuration with the modification information of the common parameter in the second parameter sets for being called In identical common parameter default information.
- 11. the control device of the magnetic resonance imaging as described in claim 9 or 10, it is characterised in that also include：3rd sets list Member, for setting at least one 3rd parameter sets, the 3rd parameter sets are included suitable for the public of individual pulse sequence The parameter value of parameter and/or peculiar parameter；The corresponding parameter sets also include the corresponding to the pulse train specified Three parameter sets；The call unit also includes：3rd call unit, for calling the 3rd parameter sets for corresponding to the pulse train specified, to be called The 3rd parameter sets in common parameter and/or peculiar parameter parameter value as identical common parameter in the parameter configuration And/or the parameter value that peculiar parameter finally determines.
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| CN101686810A (en) * | 2008-03-03 | 2010-03-31 | 株式会社东芝 | Magnetic resonance imaging apparatus and method of generating imaging conditions |
| CN102129055A (en) * | 2010-01-13 | 2011-07-20 | 株式会社东芝 | Magnetic resonance imaging apparatus |
| CN102596027A (en) * | 2010-11-01 | 2012-07-18 | 株式会社东芝 | Magnetic Resonance Imaging Device And Magnetic Resonance Image Pickup Method |
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| CN101480338A (en) * | 2008-01-08 | 2009-07-15 | 株式会社东芝 | Magnetic resonance imaging apparatus and scanning-condition setting method |
| CN101686810A (en) * | 2008-03-03 | 2010-03-31 | 株式会社东芝 | Magnetic resonance imaging apparatus and method of generating imaging conditions |
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