CN104274174A - Magnetic resonance imaging control method and device - Google Patents
Magnetic resonance imaging control method and device Download PDFInfo
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- CN104274174A CN104274174A CN201310270450.8A CN201310270450A CN104274174A CN 104274174 A CN104274174 A CN 104274174A CN 201310270450 A CN201310270450 A CN 201310270450A CN 104274174 A CN104274174 A CN 104274174A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0033—Features or image-related aspects of imaging apparatus classified in A61B5/00, e.g. for MRI, optical tomography or impedance tomography apparatus; arrangements of imaging apparatus in a room
- A61B5/004—Features or image-related aspects of imaging apparatus classified in A61B5/00, e.g. for MRI, optical tomography or impedance tomography apparatus; arrangements of imaging apparatus in a room adapted for image acquisition of a particular organ or body part
Abstract
Disclosed is a magnetic resonance imaging control method. The method includes the steps that a first parameter set is arranged, the first parameter set comprises default information of a common parameter, and the common parameter is suitable for all magnetic resonance imaging impulse sequences; at least one second parameter set is arranged, the second parameter sets comprise default information of specific parameters, and the specific parameters are suitable for an individual magnetic resonance imaging impulse sequence; based on the specific impulse sequences, the first parameter set and a corresponding parameter set are called, so that the parameter configuration of the specific impulse sequences is generated; the corresponding parameter set comprises the second parameter sets corresponding to the specific impulse sequences. According to the technical scheme, the magnetic resonance imaging impulse sequences can be increased or changed or deleted conveniently and simply, hence, magnetic resonance imaging can be controlled simply and effectively, and the processing property and the expansion capability of the magnetic resonance system are improved.
Description
Technical field
The present invention relates to mr imaging technique, particularly relate to a kind of control method and device of nuclear magnetic resonance.
Background technology
Magnetic resonance (Magnetic Resonance, MR) imaging is the stationary magnetic field utilizing magnetic resonance magnet to produce, by the control of radio frequency system and gradient system, undertaken exciting and receiving magnetic resonance signals by radio system, utilize gradient magnetic to excite sample and select layer and space encoding, to obtain a kind of tomograph imaging method possessing spatial positional information.The major function of magnetic resonance equipment performs relevant pulse train to control described magnetic resonance equipment, and then form magnetic resonance image (MRI).Described pulse train is the combination of radio-frequency pulse and gradient pulse, particularly, refer to the setting of relevant parameter and the arrangements in sequential thereof such as radio-frequency pulse, gradient fields and signals collecting moment, in the process of nuclear magnetic resonance, by performing described pulse train, control each parts cooperation of magnetic resonance system, realize the application such as various nuclear magnetic resonances.
For different nuclear magnetic resonance demands, need to develop different pulse train, common pulse train has gradin-echo, spin-echo sequence etc.
Usual execution pulse train, needs the multiple magnetic resonance parameters information set contained by described pulse train, such as radio frequency parameter, gradient fields parameter, K spatial parameter, lamella location relevant parameter, coil parameter, reconstruction parameter etc.Described magnetic resonance parameters is a complicated parameter sets, the dependence that quantity is many and often certain in addition between parameter, in prior art, parameters all in magnetic resonance system is all fixedly installed together, if certain specific sequence of pulses for nuclear magnetic resonance needs to increase, delete or an amendment peculiar parameter, need the system file of the corresponding whole magnetic resonance system of amendment, with the magnetic resonance pulse sequence making it be applicable to other, in nuclear magnetic resonance process, for the increase of the peculiar parameter contained by described specific sequence of pulses, the process of deleting or revise is loaded down with trivial details, method is complicated, and other pulse trains can be had influence on simultaneously, and then affect whole magnetic resonance system, reduce handling property and the extended capability of magnetic resonance system.For when issuing new pulse train, need equally to revise all accordingly the pulse train of whole system, method is complicated, influential system performance.
Summary of the invention
The problem that the present invention solves is in nuclear magnetic resonance, and nuclear magnetic resonance controls complicated, and the problem that magnetic resonance system sequence extension ability is low.
For solving the problem, the invention provides a kind of control method of nuclear magnetic resonance, comprise: a kind of control method of nuclear magnetic resonance, comprise: the first parameter sets is set, described first parameter sets comprises the default information of common parameter, and described common parameter is applicable to all pulse trains of nuclear magnetic resonance; And at least one second parameter sets is set, described second parameter sets comprises the default information of peculiar parameter, and described peculiar parameter is applicable to the individual pulse sequence of nuclear magnetic resonance; And call described first parameter sets and corresponding parameter sets based on the pulse train of specifying, to generate the parameter configuration of described pulse train of specifying; Described corresponding parameter sets comprises the second parameter sets corresponding to described pulse train of specifying; The pulse train driving magnetic resonance equipment scanning is generated according to described parameter configuration.
Optionally, the described pulse train based on specifying calls described first parameter sets and corresponding parameter sets, comprise with the parameter configuration generating described pulse train: call described first parameter sets, the default information of the common parameter in described first parameter sets is added into described parameter configuration; Call described the second parameter sets corresponding to described pulse train of specifying, the default information of the peculiar parameter in the second called parameter sets is added into described parameter configuration.
Optionally, described second parameter sets also comprises the amendment information of common parameter; The described pulse train based on specifying calls described first parameter sets and corresponding parameter sets, also comprises with the parameter configuration generating described pulse train: the default information of replacing identical common parameter in described parameter configuration with the amendment information of the common parameter in the second called parameter sets.
Optionally, described default information comprises the default value of parameter value and/or the attribute information of acquiescence.
Optionally, the control method of described nuclear magnetic resonance also comprises: arrange at least one the 3rd parameter sets, and described 3rd parameter sets comprises the parameter value of common parameter and/or the peculiar parameter being applicable to individual pulse sequence; Described corresponding parameter sets also comprises the 3rd parameter sets corresponding to described pulse train of specifying; The described pulse train based on specifying calls described first parameter sets and corresponding parameter sets, also comprise with the parameter configuration generating described pulse train: call described the 3rd parameter sets corresponding to described pulse train of specifying, using the parameter value that the parameter value of the common parameter in the 3rd called parameter sets and/or peculiar parameter is finally determined as identical common parameter in described parameter configuration and/or peculiar parameter.
Optionally, described common parameter comprises: basic parameter, lamella positional parameter, K spatial parameter, magnetization prepare at least one in parameter and reconstruction parameter.
Optionally, described first parameter sets, the second parameter sets and the 3rd parameter sets are recorded in parameter configuration files.
For solving the problem, technical solution of the present invention also provides a kind of control device of nuclear magnetic resonance, comprise: the first setting unit, for arranging the first parameter sets, described first parameter sets comprises the default information of common parameter, and described common parameter is applicable to all pulse trains of nuclear magnetic resonance; Second setting unit, for arranging at least one second parameter sets, described second parameter sets comprises the default information of peculiar parameter, and described peculiar parameter is applicable to the individual pulse sequence of nuclear magnetic resonance; Call unit, for calling described first parameter sets and corresponding parameter sets based on the pulse train of specifying, to generate the parameter configuration of described pulse train of specifying; Described corresponding parameter sets comprises the second parameter sets corresponding to described pulse train of specifying; Pulse generator, for generating the pulse train driving magnetic resonance equipment scanning according to parameter configuration.
Optionally, described call unit comprises: the first call unit, for calling described first parameter sets, the default information of the common parameter in described first parameter sets is added into described parameter configuration; Second call unit, for calling described the second parameter sets corresponding to described pulse train of specifying, is added into described parameter configuration by the default information of the peculiar parameter in the second called parameter sets.
Optionally, described second parameter sets also comprises the amendment information of common parameter; Described call unit also comprises: replacement unit, for replacing the default information of identical common parameter in described parameter configuration with the amendment information of the common parameter in the second called parameter sets.
Optionally, the control device of described nuclear magnetic resonance also comprises: the 3rd setting unit, and for arranging at least one the 3rd parameter sets, described 3rd parameter sets comprises the parameter value of common parameter and/or the peculiar parameter being applicable to individual pulse sequence; Described corresponding parameter sets also comprises the 3rd parameter sets corresponding to described pulse train of specifying; Described call unit also comprises: the 3rd call unit, for calling described the 3rd parameter sets corresponding to described pulse train of specifying, using the parameter value that the parameter value of the common parameter in the 3rd called parameter sets and/or peculiar parameter is finally determined as identical common parameter in described parameter configuration and/or peculiar parameter.
Compared with prior art, technical scheme of the present invention has the following advantages:
By arranging the first parameter sets by the common parameter of all pulse train, and for the peculiar parameter contained by different pulse train, correspondence arranges the second different parameter sets, and then call described first parameter sets and the corresponding parameter sets comprising the second parameter sets corresponding to described pulse train of specifying based on the pulse train of specifying, to generate the method for the parameter configuration of described pulse train of specifying, the increase of the pulse train to nuclear magnetic resonance can be realized convenient and simplely, change or deletion etc., and then can control nuclear magnetic resonance simply and effectively, improve handling property and the extended capability of magnetic resonance system.
Further, the method of the 3rd parameter sets is set by the parameter value of parameter contained by single magnetic resonance pulse sequence, for different nuclear magnetic resonance demands, if just the parameter value of specific pulse sequence changes, only can need revise the 3rd parameter sets that described specific pulse sequence pair is answered, any variation need not be carried out for the first parameter sets, the second parameter sets, also can not produce any impact to other sequence simultaneously, magnetic resonance pulse sequence can be controlled for concrete clinical practice easily.
Further, rank that can be different to the optimum configurations of different sets, for identical common parameter or the peculiar parameter of described different sets, then directly can replace the low parameter information of rank with the parameter information that rank is high, ensure the effectiveness of the parameter information of single pulse train, the parameter configuration of effective control individual pulse sequence, and then realize the effective control to nuclear magnetic resonance.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the control method of the nuclear magnetic resonance that the embodiment of the present invention one provides;
Fig. 2 is the schematic flow sheet of the control method of the nuclear magnetic resonance that the embodiment of the present invention two provides;
Fig. 3 is the schematic flow sheet of the control method of the nuclear magnetic resonance that the embodiment of the present invention three provides;
Fig. 4 is the schematic flow sheet of the control method of the nuclear magnetic resonance that the embodiment of the present invention four provides.
Detailed description of the invention
Magnetic resonance imaging system can be divided into three major parts by function, magnet part, spectrometer part and computer part.Magnet part is responsible for providing polarizing magnetic field, spatial encoding gradient magnetic field and radio-frequency coil.Spectrometer part major control radio frequency transmit and receive machine system performs pulse train, produce magnetic resonance signal and acquisition of image data, described spectrometer system contains pulse-series generator, and pulse-series generator is responsible for producing the stable pulse train of high speed at whole system run duration.Computer part can be that the radio-frequency unit of spectrometer produces the pulse signal needed, for gradient amplifier provides gradient waveform signal, and provide various control signal with the operation of each parts of control instrument, the data signal collected can also be processed, set up magnetic resonance image (MRI), and the image obtained is shown and the process such as output.
In the process of nuclear magnetic resonance, MR imaging apparatus, for different nuclear magnetic resonance demands, by performing the pulse train of specifying, controlling each parts cooperation of magnetic resonance system, realizing various nuclear magnetic resonance.Pulse train conventional at present 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 described spin-echo sequence is the inhomogeneities that can overcome magnetic field, and its shortcoming is that scanning speed is slow, is mainly used in conventional soft-tissue imaging.GRE is the sequence using positive and negative gradient combination to obtain echo, is mainly used in dynamic scan and blood vessel imaging.And cerebral function imaging is needed to use EPI sequence, be characterized in quickly, it is all more responsive that magnetic field bump, gradient switch the eddy current produced.
When nuclear magnetic resonance, when performing described pulse train, need the multiple magnetic resonance parameters information set contained by described pulse train, in the prior art, the parameter all due to magnetic resonance system is all fixedly installed in systems in which, and the magnetic resonance parameters contained due to different pulse train is different, so in the increase of the peculiar parameter contained by specific sequence of pulses, when deleting or revise, need the system file revising whole magnetic resonance system, with the magnetic resonance pulse sequence making it be applicable to other, process is loaded down with trivial details, method is complicated, reduce the handling property of magnetic resonance system.And for when issuing new pulse train, need equally to revise all accordingly the pulse train of whole system, method is complicated, influential system performance.
In the multiple magnetic resonance parameters information contained by pulse train, some magnetic resonance parameters is the common parameter that all pulse train all needs, such as some basic parameters, lamella positional parameter, K spatial parameter, magnetization prepare parameter and reconstruction parameter etc., and some magnetic resonance parameters is parameter specific to specific pulse train, such as " radio frequency disturbs phase " magnetic resonance parameters is parameter specific to GRE sequence, and " driving back balance " magnetic resonance parameters is parameter specific to fast acquisition interleaved spin echo.Inventor analyzes, in the increase of the peculiar parameter contained by specific sequence of pulses, when deleting or revise, peculiar parameter contained by described specific sequence of pulses can be extracted from all parameters of all pulse train, only the parameter extracted is increased, delete or amendment, and then increased with the process extracted by the parameter that described all pulses are public, deletion or amended peculiar parameter form described specific sequence of pulses, can not impact other pulse train like this, time equally for newly-increased pulse train, the parameter information of the pulse train of new series can be obtained by the common parameter of parameter specific to described newly-increased pulse train and all pulse train, a pulse can be increased quickly and easily newly like this, and can not impact other pulse train, and then can be simple, realize the control to nuclear magnetic resonance easily.Based on above-mentioned analysis, inventor proposes a kind of control method of nuclear magnetic resonance, comprising: arrange the first parameter sets, and described first parameter sets comprises the default information of common parameter, and described common parameter is applicable to all pulse trains of nuclear magnetic resonance; Arrange at least one second parameter sets, described second parameter sets comprises the default information of peculiar parameter, and described peculiar parameter is applicable to the individual pulse sequence of nuclear magnetic resonance; Described first parameter sets and corresponding parameter sets is called, to generate the parameter configuration of described pulse train of specifying based on the pulse train of specifying; Described corresponding parameter sets comprises the second parameter sets corresponding to described pulse train of specifying, and drives magnetic resonance equipment to scan according to the parameter configuration of the described pulse train generated.
Below in conjunction with flow chart and specific embodiment, technical solution of the present invention is described in detail.In an embodiment of the present invention, the control method for SE pulse train, GRE pulse train and EPI pulse train three individual pulse sequences as the pulse train containing peculiar parameter to nuclear magnetic resonance is described.
Embodiment one
In the present embodiment, the common parameter of pulse train all in nuclear magnetic resonance (namely all pulse train all have parameter) is set to a parameter sets, the peculiar parameter (namely each pulse train is different from the parameter of other pulse trains) of the individual pulse sequence of nuclear magnetic resonance is set to the parameter sets corresponding to described individual pulse sequence.In order to can the magnetic resonance parameters of pulse sequence easily control, to obtain the magnetic resonance parameters of different pulse train, finally can control magnetic resonance equipment and complete scanning, different ranks can be set to described different parameter sets.The common parameter set comparing all pulse train is as will be described set to Primary parameter set, can set multiple secondary parameters set accordingly for multiple specific pulse train containing peculiar parameter.Such as, for described SE pulse train, GRE pulse train and EPI pulse train, the common parameter of other pulse trains of described three pulse trains and magnetic resonance system can be set to Primary parameter set, it is the secondary parameters set corresponding to SE pulse train by the peculiar optimum configurations of SE pulse train, being the secondary parameters set corresponding to GRE pulse train by the peculiar optimum configurations of GRE pulse train, is the secondary parameters set corresponding to EPI pulse train by the peculiar optimum configurations of EPI pulse train.
Fig. 1 is the schematic flow sheet of the control method of the nuclear magnetic resonance that the present embodiment provides, and as shown in Figure 1, first performs step S101, determines the common parameter contained by all pulse train.
Determine the common parameter that all pulse train of magnetic resonance imaging system all needs, such as some basic parameters, lamella positional parameter, K spatial parameter, magnetization prepare parameter and reconstruction parameter etc.For example, described basic parameter can be repetition time (TR), echo time (TE), flip angle etc., described lamella positional parameter can be slice position, azimuth, the number of plies etc., described K spatial parameter can be readout resolution, phase code resolution etc., it can be fatty saturation information, inversion recovery information etc. that described magnetization prepares parameter, and described reconstruction parameter can be filtering information, interpolation information etc.
Step S102, arranges the default information of described common parameter.
The default information of described common parameter comprises the default value of the parameter value of described common parameter and the attribute information of acquiescence, or the default information of described common parameter comprises the default value of the parameter value of described common parameter, or the default information of described common parameter comprises the attribute information of the acquiescence of described common parameter.Described attribute information comprises title, the type of parameter value, the span etc. of parameter value of parameter.For example, for the repetition time, can the default value of parameter value of parameters be 4000ms, parameter name be TR, the type of parameter value is numerical value, the span of parameter value is 10ms to 100000ms.
Step S103, arranges Primary parameter set.
Common parameter contained by all pulse trains determined by step S101 and step S102 and default information thereof are set to Primary parameter set, the described process being set to Primary parameter set can adopt multiple method to arrange, such as, can the common parameter contained by described all pulse train and default information thereof be recorded in an information table, also can be recorded in XML format file, also alternate manner can be adopted to arrange, as long as the default information of each common parameter and correspondence thereof carried out recording, concrete grammar is in this no limit.
Step S104, determines the peculiar parameter contained by individual pulse sequence.
In the present embodiment, the peculiar parameter contained by SE pulse train, the peculiar parameter contained by GRE pulse train and the peculiar parameter contained by EPI pulse train is determined.
Step S105, arranges the default information of the peculiar parameter contained by individual pulse sequence.
The default value of parameter value and/or the attribute information of acquiescence of the peculiar parameter contained by described SE pulse train, GRE pulse train and EPI pulse train are set respectively, as to as described in peculiar parameter parameter value default value, the type of parameter value, the span of parameter value etc. setting default value.
Step S106, arranges secondary parameters set.
Peculiar parameter contained by the SE pulse train determined by step S104 and step S105 and default information thereof are set to the secondary parameters set corresponding to SE pulse train, peculiar parameter contained by the GRE pulse train determined by step S104 and step S105 and default information thereof are set to the secondary parameters set corresponding to GRE pulse train, and the peculiar parameter contained by the EPI pulse train determined by step S104 and step S105 and default information thereof are set to the secondary parameters set corresponding to EPI pulse train.
The present embodiment call described first parameter sets and corresponding parameter sets based on the pulse train of specifying, comprise step S107 and S108 with the parameter configuration generating described pulse train of specifying; Described corresponding parameter sets comprises the second parameter sets corresponding to described pulse train of specifying.
Perform step S107, call the common parameter and default information thereof that record in Primary parameter set, be added into parameter configuration.
Perform step S108, call peculiar parameter and the default information thereof of the individual pulse sequence recorded in secondary parameters set, be added into parameter configuration.
For example, in the process of nuclear magnetic resonance, MR imaging apparatus is for different nuclear magnetic resonance demands, different pulse train can be specified for magnetic resonance imaging, for example, when needs carry out cerebral function imaging, usually can specify and use EPI pulse train, need to drive magnetic resonance equipment to scan by EPI pulse train, now, the operator of magnetic resonance equipment can by the Dynamic System interface of magnetic resonance equipment, selected EPI pulse train is as the pulse train of specifying, magnetic resonance system calls the first parameter sets and corresponding parameter sets based on EPI pulse train, namely only need call by step S107 the common parameter and default information thereof that record in Primary parameter set, be added in parameter configuration, then peculiar parameter and the default information thereof of the EPI pulse train recorded in secondary parameters set corresponding to described EPI pulse train is called by step S108, be added in parameter configuration, the all parameter informations required for EPI pulse train can be obtained by described parameter configuration, namely the parameter configuration corresponding to EPI pulse train is obtained.
Described parameter configuration can adopt various ways to represent, can be recorded in an information table, also can be recorded in XML format file, in this no limit.Described parameter configuration and the pulse train of specifying can carry out one_to_one corresponding by the title of the pulse train of specifying, such as, when generating parameter configuration, the name of the pulse train of correspondence can be referred to as an item of information is recorded in described parameter configuration simultaneously, then when obtaining the parameter configuration corresponding to EPI pulse train, if the pulse title in described parameter configuration is identical with the title of the pulse train of specifying, can determine that described parameter configuration is the parameter configuration corresponding to EPI pulse train.
Step S109, generates the pulse train driving magnetic resonance equipment scanning according to described parameter configuration.
In the present embodiment, can by computer executed step S101 to step S108, can generate by pulse generator the pulse train driving magnetic resonance equipment to scan according to described parameter configuration in step S109, then drive magnetic resonance equipment to carry out magnetic resonance imaging by described pulse train.
So far the control to nuclear magnetic resonance is completed, in the present embodiment, if needed the SE pulse train enumerated, time specific to GRE pulse train or EPI pulse train certain sequence wherein, parameter is modified, such as, if need time the parameter type of " radio frequency disturbs phase " magnetic resonance parameters changes specific to GRE pulse train, only need the parameter type changing " radio frequency disturbs phase " magnetic resonance parameters in the secondary parameters set corresponding to GRE pulse train, and without the need to revising Primary parameter set, corresponding to the secondary parameters set of SE pulse train, and correspond to the secondary parameters set of EPI pulse train.Magnetic resonance equipment is driven to carry out the process of magnetic resonance imaging without any impact to brain function for the parameter configuration corresponding to EPI pulse train in execution.Equally, if need a newly-increased pulse train, then the peculiar optimum configurations one contained by newly-increased pulse train is only needed to correspond to the secondary parameters set of newly-increased pulse train, without the need to carrying out any amendment to other pulse train of magnetic resonance system.
Can be found out by above-described embodiment, be the parameter sets of different stage by all optimum configurations being applicable to all pulse trains of nuclear magnetic resonance, any one pulse train can obtain the common parameter part of pulse train from Primary parameter set, and its distinctive parameter can be controlled by the secondary parameters set of its correspondence simultaneously, effectively, simply can obtain the parameter configuration of individual pulse sequence, and then realize the control to nuclear magnetic resonance.
Further, in the increase of the peculiar parameter for individual pulse, when deleting or revise, can only increase accordingly the parameter of the secondary parameters set corresponding to described individual pulse equally, delete or amendment, and change without the need to the Primary parameter set shared system, also the normal use of other pulse trains can not be had influence on, same when newly-increased pulse train, also a corresponding increase secondary parameters set is only needed, said method can simply effective control impuls sequence, and then nuclear magnetic resonance is controlled, method is simple, effective raising system handling property.
It should be noted that, in above-described embodiment, the default information of the default information of the common parameter of all pulse train of described nuclear magnetic resonance and the peculiar parameter of individual pulse sequence is preset at one-level, in secondary parameters set, in other embodiments, the relevant parameter information of described common parameter and peculiar parameter also directly can be inputted by the operation interface of magnetic resonance system by user, also can by the partial parameters information default of the partial parameters information of described common parameter and peculiar parameter in one-level, in secondary parameters set, and another part information, such as some clinical practice parameters, then in the process of nuclear magnetic resonance, inputted by the operation interface of magnetic resonance system by user.
Embodiment two
In the process of nuclear magnetic resonance, may also need to modify to the partial information in some common parameters in application individual pulse sequence, if directly modified to the common parameter in Primary parameter set, the pulse train revising described common parameter can not needed to impact to other, reduce systematic function.Therefore, the amendment information that the common parameter needing amendment is set in secondary parameters set can be adopted, when generating parameter configuration, call the amendment information to the common parameter of described Primary parameter set in secondary parameters set, in alternative parameter configuration, the default information of common parameter, obtains final parameter configuration.
Fig. 2 is the schematic flow sheet of the control method of the nuclear magnetic resonance that the present embodiment provides, and as shown in Figure 2, first performs step S201, arranges Primary parameter set.
Determine the common parameter contained by all pulse train, arrange the default information of described common parameter, and then arrange Primary parameter set, detailed process please refer to step S101 in embodiment one to step S103.
Step S202, arranges secondary parameters set.
Determine the peculiar parameter contained by individual pulse sequence, arrange the default information of the peculiar parameter contained by individual pulse sequence, detailed process please refer to step S104 in embodiment one to step S105.
Be with embodiment one difference, in secondary parameters set, also record the amendment information of the common parameter of Primary parameter set described in described individual pulse sequence pair.
The amendment information of described common parameter is the amendment of the default information to common parameter, comprises the amendment for the default value of the parameter value of common parameter and/or the attribute information of acquiescence.
In the present embodiment, arrange respectively corresponding to SE pulse train, corresponding to GRE pulse train and the secondary parameters set corresponding to EPI pulse train.
For example, if described SE pulse train needs to modify to the basic parameter information repetition time TR in common parameter, such as SE pulse train needs the value of 2 times of the repetition time TR be revised as by repetition time TR in original common parameter, need in secondary parameters set then corresponding to SE pulse train to record this amendment information, if and GRE pulse train and EPI pulse train are not modified to the common parameter of described Primary parameter set, then without the need to record modification information.
The present embodiment call described first parameter sets and corresponding parameter sets based on the pulse train of specifying, comprise step S203 to S205 with the parameter configuration generating described pulse train of specifying.
Perform step S203, call the common parameter and default information thereof that record in Primary parameter set, be added into parameter configuration.
Perform step S204, call peculiar parameter and the default information thereof of the individual pulse sequence recorded in secondary parameters set, be added into parameter configuration.
Step S203 to step S204 corresponds respectively to step S107 in embodiment one to step S108.
Perform step S205, replace the default information of identical common parameter in described parameter configuration with the amendment information of the common parameter recorded in called secondary parameters set.
Call described Primary parameter set, secondary parameters set is when generating the parameter configuration of described specific pulse sequence, the default information of identical common parameter in described parameter configuration is replaced, the parameter information of common parameter in namely configuring using the amendment information of the common parameter in called secondary parameters set as final argument with the amendment information of the common parameter in called secondary parameters set.
If described specific pulse sequence does not need to modify to the common parameter of described Primary parameter set, the amendment information not recording the common parameter of Primary parameter set described in described individual pulse sequence pair in secondary parameters set, then without the need to performing this step, namely directly calls described Primary parameter set, parameter configuration that secondary parameters set generates described specific pulse sequence.Such as, the demand of image is gathered according to magnetic resonance equipment, specify and use SE pulse train to carry out magnetic resonance imaging, and need to modify to common parameter TR due to SE sequence, so when adopting said method to generate the parameter configuration of specific pulse sequence, the default information of the TR in the parameter configuration that SE sequence pair answers directly is replaced with the amendment information (parameter information) be recorded in corresponding to the TR in the secondary parameters set of SE individual pulse, to be recorded in amendment information corresponding to the TR in the secondary parameters set of SE individual pulse as the final parameter information of the parameter TR contained by described SE pulse.
Perform step S206, generate the pulse train driving magnetic resonance equipment scanning according to described parameter configuration.Can generate by pulse generator the pulse train driving magnetic resonance equipment to scan according to described parameter configuration, drive magnetic resonance equipment to carry out magnetic resonance imaging by described pulse train.
Can be found out by above-described embodiment, when individual pulse sequence is needed to modify to the partial information in the common parameter of described all pulse train, also without the need to modifying to the set of one-level common parameter, only need in the secondary parameters set that described individual pulse is corresponding record modification information, when generating the parameter configuration of described individual pulse sequence, the default information of identical common parameter in the amendment information alternative parameter configuration of recording in the direct secondary parameters set corresponding with described individual pulse, thus can effectively avoid in prior art the problem that common parameter amendment can cause needs all to be modified to all pulse train, effective raising systematic function.
Embodiment three
Along with the fast development of mr imaging technique, in order to adapt to the demand of different nuclear magnetic resonances, on the basis of existing pulse train, can produce more pulse train through simple, suitable distortion, and some distortion may be only carry out different changes to the parameter value of parameter on original pulse train basis.In order to the parameter of more convenient pulse sequence controls, can using the parameter value of pulse train separately as a set, to meet the various demands of clinical practice more easily.
In the present embodiment, common parameter contained by all pulse train and default parameters information thereof are set to Primary parameter set, peculiar parameter information contained by individual pulse sequence and default information thereof arrange the secondary parameters set corresponding to described individual pulse sequence, and the parameter value of the common parameter of individual pulse sequence and/or peculiar parameter is set to the three grades of parameter sets corresponding to described individual pulse sequence.In three grades of parameter sets can a recording needle to one of individual pulse sequence, the parameter value of several or whole common parameter; Also can a recording needle to one of individual pulse sequence, the parameter value of several or whole peculiar parameter; Can also both recording needle be to one of individual pulse sequence, the parameter value of several or whole common parameter, recording needle is to one of individual pulse sequence, the parameter value of several or whole peculiar parameter again.
Below in conjunction with particular flow sheet, the present embodiment is described in detail, as shown in Figure 3, first performs step S301, Primary parameter set is set.Determine the common parameter contained by all pulse train, the default information of described common parameter is set, and then Primary parameter set is set.When the default information of common parameter is set, can set the span etc. of the type of the title of parameter, parameter value and parameter value, also a default value can be set for the parameter value of parameter simultaneously.Detailed process please refer to step S101 in embodiment one to step S103.
Step S302, arranges secondary parameters set.Determine the peculiar parameter contained by individual pulse sequence, the default information of the peculiar parameter contained by individual pulse sequence is set, 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.When this arranges the default value of the peculiar parameter contained by individual pulse sequence, can set the span etc. of the described parameter name of peculiar parameter, the type of parameter value and parameter value, also a default value can be set to the parameter value of peculiar parameter simultaneously.Detailed process please refer to step S104 in embodiment one to step S106.
Step S303, determines the parameter value of the common parameter contained by described individual pulse sequence, peculiar parameter.
Common parameter contained by described individual pulse sequence, the parameter value of peculiar parameter can refer to the parameter value of the common parameter contained by individual pulse sequence, also the parameter value of the peculiar parameter contained by individual pulse sequence be can refer to, common parameter contained by individual pulse sequence and all parameter value of peculiar parameter also can be referred to.
In this step, what determine is only the parameter value of the common parameter contained by described individual pulse sequence, peculiar parameter, does not relate to the span etc. of the parameter name of described common parameter and/or peculiar parameter, the type of parameter value and parameter value.
Perform step S304, three grades of parameter sets are set.
The parameter value of the common parameter contained by the described individual pulse sequence determined in step S303, peculiar parameter is set to the three grades of parameter sets corresponding to described individual pulse sequence.Such as, the parameter value of the common parameter contained by SE sequence, peculiar parameter can be set to the three grades of parameter sets corresponding to SE pulse train, the parameter value of the common parameter contained by GRE sequence, peculiar parameter is set to the three grades of parameter sets corresponding to GRE pulse train, the parameter value of the common parameter contained by EPI sequence, peculiar parameter is set to the three grades of parameter sets corresponding to EPI pulse train.
The described process being set to three grades of parameter sets can adopt multiple method to arrange, such as, can the parameter value of the common parameter contained by described individual pulse sequence and/or peculiar parameter be recorded in an information table, also can be recorded in XML format file, alternate manner also can be adopted to arrange.
The present embodiment call described first parameter sets and corresponding parameter sets based on the pulse train of specifying, comprise step S305 to S307 with the parameter configuration generating described pulse train of specifying.
Perform step S305, call the common parameter and default information thereof that record in Primary parameter set, be added into parameter configuration.
Perform step S306, call peculiar parameter and the default information thereof of the individual pulse sequence recorded in secondary parameters set, be added into parameter configuration.
Step S305 to step S306 respectively can step S107 in reference example one to step S108, do not repeat them here.
Perform step S307, call the parameter value of the common parameter in three grades of parameter sets, peculiar parameter, in parameter configuration, the parameter value of configuration common parameter, peculiar parameter.
The parameter value of described configuration common parameter, peculiar parameter refer to call the common parameter in described three grades of parameter sets, peculiar parameter parameter value time, if the common parameter of the sequence of specific pulse described in parameter configuration, the parameter value of peculiar parameter are not identical with parameter value corresponding in three grades of parameter sets, then the common parameter of correspondence, the parameter value of peculiar parameter in being configured by the parameter value alternative parameter in three grades of parameter sets; If the common parameter of the sequence of specific pulse described in parameter configuration, the parameter value of peculiar parameter do not carry out arranging (i.e. the default value of non-parameters value), then the parameter value in three grades of parameter sets is added in parameter configuration.
It should be noted that, above-mentioned by Primary parameter set, secondary parameters set and three grades of parameter sets generate in the process of parameter configuration, for Primary parameter set, in the corresponding process of the parameter value of the parameter in secondary parameters set in three grades of parameter sets, because three grades of parameter sets are in the present embodiment only containing parameter value, and there is no the information such as parameter name, so one_to_one corresponding cannot be carried out by parameter name, can according to the order by Primary parameter set and the determined parameter of secondary parameters in three grades of parameter sets, the size of one_to_one corresponding setup parameter value successively, for the place of the parameter value using Primary parameter set or secondary parameters set to give tacit consent to, then can represent with " 0 " or " 1 " and use default information, when generating parameter configuration, direct use default information.In other embodiments, three grades of parameter sets equally can simultaneously with parameter name information, then can by with the one_to_one corresponding of the parameter of parameter name information realization in Primary parameter set, secondary parameters set, then now can only retain the parameter value not using default information in three grades of parameter sets.
Perform step S308, generate the pulse train driving magnetic resonance equipment scanning according to described parameter configuration.Can generate by pulse generator the pulse train driving magnetic resonance equipment to scan according to described parameter configuration, drive magnetic resonance equipment to carry out magnetic resonance imaging by described pulse train.
In the above-described embodiments, by to the independent parameters set of the parameter value of magnetic resonance pulse sequence parameter, magnetic resonance pulse sequence can be controlled more easily for concrete clinical practice, such as, for SE sequence, if for different nuclear magnetic resonance demands, described SE sequence is the value difference of repetition time TR, then only can change the value of TR corresponding in three grades of parameter sets, need not any variation be carried out for Primary parameter set, secondary parameters set, also can not produce any impact to other sequence simultaneously.
Equally, if a newly-increased pulse train, then only need a corresponding newly-increased secondary parameters set and three grades of parameter sets, concrete grammar see above-mentioned discussion, can not repeat them here.
Embodiment four
In the process of nuclear magnetic resonance, if need during individual pulse sequence to modify to the partial information in some common parameters, the amendment information that the common parameter needing amendment is set in secondary parameters set can be adopted, when generating parameter configuration, call the amendment information to the common parameter of described Primary parameter set in secondary parameters set, in alternative parameter configuration, the default information of common parameter, obtains final parameter configuration.
Fig. 4 is the schematic flow sheet of the control method of the nuclear magnetic resonance that the present embodiment provides, and as shown in Figure 4, first performs step S401, arranges Primary parameter set.This step corresponds to the step S301 of embodiment three.
Step S402, arranges secondary parameters set.
In this step, the amendment information of the peculiar parameter contained by individual pulse sequence and default information and the common parameter to described Primary parameter set, the secondary parameters set corresponding to described individual pulse is set, if described individual pulse sequence needs to modify to the common parameter of described Primary parameter set, then in secondary parameters set, also need the amendment information of the common parameter recording Primary parameter set described in described individual pulse sequence pair.Detailed process please refer to embodiment two step S202, does not repeat them here.
The present embodiment call described first parameter sets and corresponding parameter sets based on the pulse train of specifying, comprise step S404 to S407 with the parameter configuration generating described pulse train of specifying.
Perform step S404, call the common parameter and default information thereof that record in Primary parameter set, be added into parameter configuration.
Perform step S405, call peculiar parameter and the default information thereof of the individual pulse sequence recorded in secondary parameters set, be added into parameter configuration.
Step S404 to step S405 corresponds respectively to step S305 in embodiment three to step S306, does not repeat them here.
Perform step S406, replace the default information of identical common parameter in described parameter configuration with the amendment information of the common parameter recorded in called secondary parameters set.
Call described Primary parameter set, secondary parameters set is when generating the parameter configuration of described specific pulse sequence, replace the default information of identical common parameter in described parameter configuration with the amendment information of the common parameter in called secondary parameters set.
Perform step S407, call the parameter value of the common parameter in three grades of parameter sets, peculiar parameter, in parameter configuration, configure the parameter value of identical common parameter, peculiar parameter.Detailed process please refer to the step S307 of embodiment three, does not repeat them here.
Perform step S408, generate the pulse train driving magnetic resonance equipment scanning according to described parameter configuration.Can generate by pulse generator the pulse train driving magnetic resonance equipment to scan according to described parameter configuration, drive magnetic resonance equipment to carry out magnetic resonance imaging by described pulse train.
In the present embodiment, Primary parameter set is set to by the common parameter of all pulse train and default information thereof, parameter and default information thereof specific to individual pulse sequence, and secondary parameters set is arranged to the amendment information of the common parameter of described Primary parameter set, the whole parameter values contained by individual pulse sequence arrange three grades of parameter sets.In the process of nuclear magnetic resonance, if for the pulse train of specifying, need to modify to the default information of the common parameter of described Primary parameter set, only need revise the secondary parameters set corresponding to described specific pulse sequence, if need to revise parameter value, three grades of parameter sets corresponding to described specific pulse sequence only need be revised.For the determination of the parameter value of certain parameter in the parameter configuration of specific pulse sequence, if three grades of parameter sets corresponding to described specific pulse sequence have the occurrence of described parameter, then use the value of three grades of parameter sets, if three grades of parameter sets do not have the occurrence of described parameter, then use the default value of the described parameter in the secondary parameters set corresponding to described specific pulse sequence, if secondary parameters set does not have the occurrence of described parameter, then use the default value of the described parameter in Primary parameter set.
In the above-described embodiments, the default information of the common parameter of all pulse train of described nuclear magnetic resonance, the default information of the peculiar parameter of individual pulse sequence, secondary parameters set is to the common parameter in the amendment information of the common parameter of described Primary parameter set and three grades of parameter sets, the parameter value of peculiar parameter, one-level can be preset at, in secondary and three grades of parameter sets, also directly can be inputted by the user interface of magnetic resonance system by user, also partial information one-level can be preset in described various information, secondary, in three grades of parameter sets, and another part information, such as some clinical practice parameters, then in the process of nuclear magnetic resonance, inputted by the operation interface of magnetic resonance system by user, in this no limit.
In the above-described embodiments, the parameter of pulse train is divided into two or three parameter sets, in other embodiments, also aforesaid way is not limited to, such as, in all pulse trains of nuclear magnetic resonance, the parameter that some these pulse trains all can use may be contained by some pulse train, and other sequence contains the public parameter of other, then now, Primary parameter set can be set by the common parameter of all pulse train, by the common parameter of these pulse trains, the secondary parameters set corresponding to these pulse trains is set, here multiple secondary parameters set can be set equally, peculiar parameter again contained by the individual pulse sequence of these pulse trains described, three grades of parameter sets of the individual pulse sequence corresponded in these pulse trains are set, the parameter value of parameter contained by the individual pulse sequence in these pulse trains described again, the four pole parameter set of the individual pulse sequence corresponded in these pulse trains is set.For the division of parameter sets, can various ways be adopted, not limit at this.
The control method of corresponding above-mentioned nuclear magnetic resonance, technical solution of the present invention also provides a kind of control device of nuclear magnetic resonance, described device comprises: the first setting unit, for arranging the first parameter sets, described first parameter sets comprises the default information of common parameter, and described common parameter is applicable to all pulse trains of nuclear magnetic resonance; Second setting unit, for arranging at least one second parameter sets, described second parameter sets comprises the default information of peculiar parameter, and described peculiar parameter is applicable to the individual pulse sequence of nuclear magnetic resonance; Call unit, for calling described first parameter sets and corresponding parameter sets based on the pulse train of specifying, to generate the parameter configuration of described pulse train of specifying; Described corresponding parameter sets comprises the second parameter sets corresponding to described pulse train of specifying; Pulse generator, for generating the pulse train driving magnetic resonance equipment scanning according to parameter configuration.
Although the present invention discloses as above, the present invention is not defined in this.Any those skilled in the art, without departing from the spirit and scope of the present invention, all can make various changes or modifications, and therefore protection scope of the present invention should be as the criterion with claim limited range.
Claims (11)
1. a control method for nuclear magnetic resonance, is characterized in that, comprising:
Arrange the first parameter sets, described first parameter sets comprises the default information of common parameter, and described common parameter is applicable to all pulse trains of nuclear magnetic resonance; And
Arrange at least one second parameter sets, described second parameter sets comprises the default information of peculiar parameter, and described peculiar parameter is applicable to the individual pulse sequence of nuclear magnetic resonance; And
Described first parameter sets and corresponding parameter sets is called, to generate the parameter configuration of described pulse train of specifying based on the pulse train of specifying; Described corresponding parameter sets comprises the second parameter sets corresponding to described pulse train of specifying;
The pulse train driving magnetic resonance equipment scanning is generated according to described parameter configuration.
2. the control method of nuclear magnetic resonance as claimed in claim 1, it is characterized in that, the described pulse train based on specifying calls described first parameter sets and corresponding parameter sets, comprises with the parameter configuration generating described pulse train:
Call described first parameter sets, the default information of the common parameter in described first parameter sets is added into described parameter configuration;
Call described the second parameter sets corresponding to described pulse train of specifying, the default information of the peculiar parameter in the second called parameter sets is added into described parameter configuration.
3. the control method of nuclear magnetic resonance as claimed in claim 2, it is characterized in that, described second parameter sets also comprises the amendment information of common parameter;
The described pulse train based on specifying calls described first parameter sets and corresponding parameter sets, also comprises with the parameter configuration generating described pulse train:
The default information of identical common parameter in described parameter configuration is replaced with the amendment information of the common parameter in the second called parameter sets.
4. the control method of nuclear magnetic resonance as claimed in claim 1, it is characterized in that, described default information comprises the default value of parameter value and/or the attribute information of acquiescence.
5. the control method of nuclear magnetic resonance as claimed in claim 2 or claim 3, it is characterized in that, also comprise: arrange at least one the 3rd parameter sets, described 3rd parameter sets comprises the parameter value of common parameter and/or the peculiar parameter being applicable to individual pulse sequence; Described corresponding parameter sets also comprises the 3rd parameter sets corresponding to described pulse train of specifying;
The described pulse train based on specifying calls described first parameter sets and corresponding parameter sets, also comprises with the parameter configuration generating described pulse train:
Call described the 3rd parameter sets corresponding to described pulse train of specifying, using the parameter value that the parameter value of the common parameter in the 3rd called parameter sets and/or peculiar parameter is finally determined as identical common parameter in described parameter configuration and/or peculiar parameter.
6. the control method of nuclear magnetic resonance as claimed in claim 1, it is characterized in that, described common parameter comprises: basic parameter, lamella positional parameter, K spatial parameter, magnetization prepare at least one in parameter and reconstruction parameter.
7. the control method of nuclear magnetic resonance as claimed in claim 4, it is characterized in that, described first parameter sets, the second parameter sets and the 3rd parameter sets are recorded in parameter configuration files.
8. a control device for nuclear magnetic resonance, is characterized in that, comprising:
First setting unit, for arranging the first parameter sets, described first parameter sets comprises the default information of common parameter, and described common parameter is applicable to all pulse trains of nuclear magnetic resonance;
Second setting unit, for arranging at least one second parameter sets, described second parameter sets comprises the default information of peculiar parameter, and described peculiar parameter is applicable to the individual pulse sequence of nuclear magnetic resonance;
Call unit, for calling described first parameter sets and corresponding parameter sets based on the pulse train of specifying, to generate the parameter configuration of described pulse train of specifying; Described corresponding parameter sets comprises the second parameter sets corresponding to described pulse train of specifying;
Pulse generator, for generating the pulse train driving magnetic resonance equipment scanning according to parameter configuration.
9. the control device of nuclear magnetic resonance as claimed in claim 8, it is characterized in that, described call unit comprises:
First call unit, for calling described first parameter sets, is added into described parameter configuration by the default information of the common parameter in described first parameter sets;
Second call unit, for calling described the second parameter sets corresponding to described pulse train of specifying, is added into described parameter configuration by the default information of the peculiar parameter in the second called parameter sets.
10. the control device of nuclear magnetic resonance as claimed in claim 9, it is characterized in that, described second parameter sets also comprises the amendment information of common parameter; Described call unit also comprises:
Replacement unit, for replacing the default information of identical common parameter in described parameter configuration with the amendment information of the common parameter in the second called parameter sets.
The control device of 11. nuclear magnetic resonances as described in claim 9 or 10, it is characterized in that, also comprise: the 3rd setting unit, for arranging at least one the 3rd parameter sets, described 3rd parameter sets comprises the parameter value of common parameter and/or the peculiar parameter being applicable to individual pulse sequence; Described corresponding parameter sets also comprises the 3rd parameter sets corresponding to described pulse train of specifying;
Described call unit also comprises:
3rd call unit, for calling described the 3rd parameter sets corresponding to described pulse train of specifying, using the parameter value that the parameter value of the common parameter in the 3rd called parameter sets and/or peculiar parameter is finally determined as identical common parameter in described parameter configuration and/or peculiar parameter.
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