CN103356192B - A kind of medical image configuration system and method - Google Patents
A kind of medical image configuration system and method Download PDFInfo
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Abstract
The present invention relates to a kind of medical image configuration system and method.Medical image configuration system of the present invention includes MR imaging apparatus and magnetic resonance elastography exciting bank, described MR imaging apparatus includes elastogram module, described magnetic resonance elastography exciting bank includes signal receiving module, mode control module and signal output module, and described signal receiving module receives the synchronous triggering signal that described MR imaging apparatus sends；The number of times of the synchronous triggering signal that described mode control module receives according to described signal receiving module automatically turns on sinewave output pattern, and the stopping according to synchronous triggering signal is automatically switched off sinewave output pattern；Described signal output module detects to testee sine wave output signal.The synchronous triggering signal that the present invention sends by detecting MR imaging apparatus opens and closes automatically the sine wave signal output of magnetic resonance elastography exciting bank, saves the inconvenience of manual operation, improves collecting efficiency.
Description
Technical field
The invention belongs to medical image configuring technical field, particularly relate to a kind of medical image configuration system and method.
Background technology
Medical image configuration refers to the medical image from multi-form detector (such as MRI, KPET, SPECT etc.), utilizing computer technology to realize seeking a kind of or a series of spatial alternation for a secondary medical image, what make that it reaches spatially with the corresponding point on another width medical image is consistent.Wherein, mr imaging technique (MagneticResonanceImaging, MRI) is with advantages such as fabulous soft tissue resolution, several functions imaging means and radiationless injuries, it has also become one of currently the most important clinical diagnosis means.And magnetic resonance elastography (MagneticResonanceElastography, MRE) as a kind of novel noninvasive imaging method, utilize a kind of special mr techniques, by evaluating mechanical wave propagation in the tissue, thus providing the information about tissue elasticity, can intuitively show and quantify inside of human body tissue elasticity, and the elastogram to tissue, " image palpation " is made to become possibility, in breast cancer detection, liver cirrhosis is by stages, atheromatous plaque, muscle injury, cerebral disorders detects, the treatments such as radio-frequency (RF) ablation and monitoring aspect are significant.
Outside vibratory stimulation device in magnetic resonance elastography technology is the core component of imaging system, existing external drive device needs manually opened in imaging process and closes sinewave output function, operation inconvenience and easily occur forgetting to turn on exciting bank and cause gather data failure situation, affect efficiency.
Summary of the invention
The invention provides a kind of medical image configuration system and method, it is intended to solve the technical problem that existing magnetic resonance elastography technology cannot open and close automatically the sinewave output function of external drive device.
Technical scheme provided by the invention is: a kind of medical image configuration system, including MR imaging apparatus and magnetic resonance elastography exciting bank, described MR imaging apparatus includes elastogram module, described magnetic resonance elastography exciting bank includes signal receiving module, mode control module and signal output module, and described signal receiving module receives the synchronous triggering signal that described MR imaging apparatus sends；Described mode control module is respectively connected with described signal receiving module and described signal output module, the number of times of the synchronous triggering signal that described mode control module receives according to described signal receiving module automatically turns on sinewave output pattern, and the stopping according to synchronous triggering signal is automatically switched off sinewave output pattern；Described signal output module is connected with testee respectively with elastogram module, and described signal output module detects to testee sine wave output signal；Described elastogram module gathers the detection data of testee, obtains the coefficient of elasticity scattergram of testee.
Technical scheme also includes: described mode control module automatically turns on the opening ways of sinewave output pattern and is: judge that the synchronous triggering signal of signal receiving module receives whether number of times reaches pre-set threshold value, if reaching pre-set threshold value, then automatically turn on sinewave output pattern, and by signal output module to testee sine wave output signal；Without reaching pre-set threshold value, then continue to judge the reception number of times of synchronous triggering signal.
Technical scheme also includes: described mode control module is automatically switched off the closedown mode of sinewave output pattern and is: judge whether synchronous triggering signal stops and whether dwell time reaches pre-set threshold value, if synchronous triggering signal stops and dwell time reaches pre-set threshold value, then it is automatically switched off sinewave output pattern, until reopening sinewave output pattern again when the reception number of times of next synchronous triggering signal reaches pre-set threshold value；If synchronous triggering signal does not stop, although or stop but dwell time not up to pre-set threshold value, then continue to put out sine wave signal by signal output module.
Technical scheme also includes: it is at least 2 times that described mode control module automatically turns on the synchronous triggering signal reception number of times of sinewave output pattern, and the synchronous triggering signal dwell time pre-set threshold value being automatically switched off sinewave output pattern is 5S.
Technical scheme also includes: described MR imaging apparatus also includes signal transmitting module, described signal transmitting module is connected with signal receiving module, for being sent the synchronous triggering signal of certain number of times before image acquisition according to the repetition interval set by magnetic resonance imaging sequence；Repetition time is MR imaging apparatus frequency of vibration 3 times of described transmission synchronous triggering signal.
Another technical scheme provided by the invention is: a kind of medical image collocation method, including:
Step a: receive magnetic resonance and shake the synchronous triggering signal that imaging device sends；
Step b: automatically turn on sinewave output pattern according to the reception number of times of synchronous triggering signal, and detect to testee sine wave output signal；
Step c: gathered the detection data of testee by MR imaging apparatus, obtains the coefficient of elasticity scattergram of testee；
Step d: be automatically switched off sinewave output pattern according to the stopping of synchronous triggering signal.
Technical scheme also includes: also include before described step a: send the synchronous triggering signal of certain number of times by the shake scanning sequence of imaging device of magnetic resonance according to the repetition interval set；Repetition time is MR imaging apparatus frequency of vibration 3 times of described transmission synchronous triggering signal.
Technical scheme also includes: in described step b, the described reception number of times according to synchronous triggering signal automatically turns on sinewave output pattern and specifically includes: judge whether the reception number of times of synchronous triggering signal reaches pre-set threshold value, without reaching pre-set threshold value, continue to judge the reception number of times of synchronous triggering signal；If reaching pre-set threshold value, automatically turn on sinewave output pattern；It is at least 2 times that the described synchronous triggering signal automatically turning on sinewave output pattern receives number of times.
Technical scheme also includes: in described step c, the detection data of described collection testee, the coefficient of elasticity scattergram obtaining testee specifically includes: apply motion sensitive gradient in imaging sequence by the magnetic resonance imaging device that shakes, gather the map of magnitudes of testee and the phase diagram of particle displacement, and obtained the coefficient of elasticity scattergram of testee according to the phase diagram collected by algorithm for reconstructing.
Technical scheme also includes: in described step d, the described stopping according to synchronous triggering signal is automatically switched off sinewave output pattern and specifically includes: judge whether synchronous triggering signal stops and whether dwell time reaches pre-set threshold value, if synchronous triggering signal stops and dwell time reaches pre-set threshold value, it is automatically switched off sinewave output pattern；If synchronous triggering signal does not stop, although or stop but dwell time not up to pre-set threshold value, then continue to put out sine wave signal.
Technical scheme has the advantage that or beneficial effect: the synchronous triggering signal that the medical image configuration system of the embodiment of the present invention and method send by detecting MR imaging apparatus opens and closes automatically the sine wave signal output of magnetic resonance elastography exciting bank, save the inconvenience of manual operation, improve collecting efficiency, and prevent from forgetting to turn on exciting bank and cause gather data failure situation, triggering signal by judging more than 2 times simultaneously, it is to avoid the erroneous trigger signal that external disturbance produces.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of the medical image configuration system of the embodiment of the present invention；
Accompanying drawing 2 is the flow chart of the medical image collocation method of the embodiment of the present invention.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention.
Refer to Fig. 1, for the structural representation of the medical image configuration system of the embodiment of the present invention.The medical image configuration system of the embodiment of the present invention includes MR imaging apparatus and magnetic resonance elastography exciting bank, wherein, MR imaging apparatus includes signal transmitting module and elastogram module, and magnetic resonance elastography exciting bank includes signal receiving module, mode control module and signal output module.
The signal transmitting module of MR imaging apparatus is connected with the signal receiving module of magnetic resonance elastography exciting bank, for before image acquisition by magnetic resonance imaging sequence TR(repetition time according to setting) interval sends the synchronous triggering signal of certain number of times；Wherein, MR imaging apparatus is magnetic resonance scanner, send the TR time is MR imaging apparatus frequency of vibration 3 times of synchronous triggering signal, such as, the frequency of vibration of MR imaging apparatus is 50Hz, the interval then sending synchronous triggering signal is 3 cycles, i.e. 20ms*3=60ms, and external drive device then can receive synchronous triggering signal every 60ms；It is appreciated that the TR time sending synchronous triggering signal is set also dependent on practical application；Magnetic resonance imaging sequence refers to the setting of the relevant parameters such as radio-frequency pulse, gradient fields and signals collecting moment and the arrangement in sequential thereof, applies different magnetic resonance imaging sequences and can obtain reflecting the image of these factor difference emphasis.
Elastogram module is connected with testee, for applying motion sensitive gradient (MSG in imaging sequence by phase detection techniques, MotionSensitizingGradient), gather the map of magnitudes of testee and the phase diagram of particle displacement, and obtained the coefficient of elasticity scattergram of testee according to the phase diagram collected by algorithm for reconstructing；Wherein, motion sensitive gradient is that a series of of application before signals collecting act on the polarity oscillating gradient that signal reads.
Signal receiving module is connected with the signal transmitting module of MR imaging apparatus, for receiving the synchronous triggering signal that MR imaging apparatus sends.
Mode control module is respectively connected with signal receiving module and signal output module, synchronous triggering signal for judging signal receiving module receives whether number of times reaches pre-set threshold value, if reaching pre-set threshold value, then automatically turn on sinewave output pattern, and by signal output module to testee sine wave output signal；Without reaching pre-set threshold value, then continue to judge the reception number of times of synchronous triggering signal；Simultaneously, after automatically turning on sinewave output pattern, mode control module judges whether synchronous triggering signal stops and whether dwell time reaches pre-set threshold value, if synchronous triggering signal stops and dwell time reaches pre-set threshold value, then it is automatically switched off sinewave output pattern, until reopening sinewave output pattern again when the reception number of times of next synchronous triggering signal reaches pre-set threshold value；If synchronous triggering signal does not stop, although or stop but dwell time not up to pre-set threshold value, then continue to put out sine wave signal by signal output module.Wherein, in order to avoid the triggering signal of mistake produced by external disturbance, mode control module just opens sinewave output pattern after needing the synchronous triggering signal judging to receive at least 2 times, the dwell time pre-set threshold value closing sinewave output pattern can be set according to practical application, in embodiments of the present invention, the synchronous triggering signal reception number of times pre-set threshold value opening sinewave output pattern is 3 times, and the dwell time pre-set threshold value closing sinewave output pattern is 5S.
Signal output module is connected with testee, for detecting to testee sine wave output signal, and is gathered the map of magnitudes of testee and the phase diagram of particle displacement by elastogram module, obtains the coefficient of elasticity scattergram of testee.
Refer to Fig. 2, be the flow chart of the medical image collocation method of the embodiment of the present invention.The medical image collocation method of the embodiment of the present invention comprises the following steps:
Step S200: send the synchronous triggering signal of certain number of times according to the TR interval set by the shake scanning sequence of imaging device of magnetic resonance.
In step s 200, magnetic resonance imaging sequence refers to the setting of the relevant parameters such as radio-frequency pulse, gradient fields and signals collecting moment and the arrangement in sequential thereof, applies different magnetic resonance imaging sequences and can obtain reflecting the image of these factor difference emphasis；Send the TR time is MR imaging apparatus frequency of vibration 3 times of synchronous triggering signal, such as, the frequency of vibration of MR imaging apparatus is 50Hz, the interval then sending synchronous triggering signal is 3 cycles, i.e. 20ms*3=60ms, external drive device then can receive synchronous triggering signal every 60ms.It is appreciated that the TR time sending synchronous triggering signal is set also dependent on practical application.
Step S210: receive synchronous triggering signal by magnetic resonance elastography exciting bank.
Step S220: judge whether the reception number of times of synchronous triggering signal reaches pre-set threshold value, without reaching pre-set threshold value, continues to judge the reception number of times of synchronous triggering signal；If reaching pre-set threshold value, perform step S230.
Step S230: automatically turn on sinewave output pattern, and detect to testee sine wave output signal.
In step S230, in order to avoid the triggering signal of mistake produced by external disturbance, sinewave output pattern is just opened after needing the synchronous triggering signal judging to receive at least 2 times, in embodiments of the present invention, the synchronous triggering signal reception number of times pre-set threshold value opening sinewave output pattern is 3 times.
Step S240: apply motion sensitive gradient in imaging sequence by the magnetic resonance imaging device that shakes, gather the map of magnitudes of testee and the phase diagram of particle displacement, and obtained the coefficient of elasticity scattergram of testee according to the phase diagram collected by algorithm for reconstructing.
Step S250: judge whether synchronous triggering signal stops and whether dwell time reaches pre-set threshold value, if synchronous triggering signal stops and dwell time reaches pre-set threshold value, performs step S260；If synchronous triggering signal does not stop, although or stop but dwell time not up to pre-set threshold value, then continue executing with step S230.
Step S260: be automatically switched off sinewave output pattern.
In step S260, the dwell time pre-set threshold value closing sinewave output pattern can be set according to practical application, and in the embodiment of the present invention, the dwell time pre-set threshold value closing sinewave output pattern is 5S.
The synchronous triggering signal that the medical image configuration system of the embodiment of the present invention and method send by detecting MR imaging apparatus opens and closes automatically the sine wave signal output of magnetic resonance elastography exciting bank, save the inconvenience of manual operation, improve collecting efficiency, and prevent from forgetting to turn on exciting bank and cause gather data failure situation, triggering signal by judging more than 2 times simultaneously, it is to avoid the erroneous trigger signal that external disturbance produces.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent replacement and improvement etc. made within the spirit and principles in the present invention, should be included within protection scope of the present invention.
Claims (5)
1. a medical image configuration system, it is characterized in that, including MR imaging apparatus and magnetic resonance elastography exciting bank, described MR imaging apparatus includes elastogram module, described magnetic resonance elastography exciting bank includes signal receiving module, mode control module and signal output module
Described signal receiving module receives the synchronous triggering signal that described MR imaging apparatus sends；
The number of times of the synchronous triggering signal that described mode control module receives according to described signal receiving module automatically turns on sinewave output pattern, and the stopping according to synchronous triggering signal is automatically switched off sinewave output pattern, described mode control module automatically turns on the opening ways of sinewave output pattern: judge that the synchronous triggering signal of signal receiving module receives whether number of times reaches predetermined threshold value, if reaching predetermined threshold value, then automatically turn on sinewave output pattern, and by signal output module to testee sine wave output signal；Without reaching predetermined threshold value, then continue to judge the reception number of times of synchronous triggering signal；Described mode control module is automatically switched off the closedown mode of sinewave output pattern: judge whether synchronous triggering signal stops and whether dwell time reaches predetermined threshold value, if synchronous triggering signal stops and dwell time reaches predetermined threshold value, then it is automatically switched off sinewave output pattern, until reopening sinewave output pattern again when the reception number of times of next synchronous triggering signal reaches predetermined threshold value；If synchronous triggering signal does not stop, although or stop but dwell time not up to predetermined threshold value, then continue to put out sine wave signal by signal output module；
Described signal output module detects to testee sine wave output signal；
Described elastogram module gathers the detection data of testee, obtains the coefficient of elasticity scattergram of testee；
Wherein, it is at least 2 times that described mode control module automatically turns on the synchronous triggering signal reception number of times of sinewave output pattern, and the synchronous triggering signal dwell time predetermined threshold value being automatically switched off sinewave output pattern is 5S.
2. medical image configuration system according to claim 1, it is characterized in that, described MR imaging apparatus also includes signal transmitting module, for being sent the synchronous triggering signal of certain number of times before image acquisition according to the repetition interval set by magnetic resonance imaging sequence；The repetition time of described transmission synchronous triggering signal is 3 times of described MR imaging apparatus vibration period.
3. a medical image collocation method, including:
Step a: receive the synchronous triggering signal that MR imaging apparatus sends；
Step b: automatically turn on sinewave output pattern according to the reception number of times of synchronous triggering signal, and detect to testee sine wave output signal, the described reception number of times according to synchronous triggering signal automatically turns on sinewave output pattern and specifically includes: judge whether the reception number of times of synchronous triggering signal reaches predetermined threshold value, without reaching predetermined threshold value, continue to judge the reception number of times of synchronous triggering signal；If reaching predetermined threshold value, automatically turning on sinewave output pattern, wherein, the synchronous triggering signal reception number of times automatically turning on sinewave output pattern is at least 2 times, and the synchronous triggering signal dwell time predetermined threshold value being automatically switched off sinewave output pattern is 5S；
Step c: gathered the detection data of testee by MR imaging apparatus, obtains the coefficient of elasticity scattergram of testee；
Step d: be automatically switched off sinewave output pattern according to the stopping of synchronous triggering signal, the described stopping according to synchronous triggering signal is automatically switched off sinewave output pattern and specifically includes: judge whether synchronous triggering signal stops and whether dwell time reaches predetermined threshold value, if synchronous triggering signal stops and dwell time reaches predetermined threshold value, it is automatically switched off sinewave output pattern；If synchronous triggering signal does not stop, although or stop but dwell time not up to predetermined threshold value, then continue to put out sine wave signal.
4. medical image collocation method according to claim 3, it is characterised in that also include before described step a: sent the synchronous triggering signal of certain number of times by the scanning sequence of MR imaging apparatus according to the repetition interval set；Repetition time is the MR imaging apparatus vibration period 3 times of described transmission synchronous triggering signal.
5. medical image collocation method according to claim 4, it is characterized in that, in described step c, the detection data of described collection testee, the coefficient of elasticity scattergram obtaining testee specifically includes: apply motion sensitive gradient in imaging sequence by MR imaging apparatus, gather the map of magnitudes of testee and the phase diagram of particle displacement, and obtained the coefficient of elasticity scattergram of testee according to the phase diagram collected by algorithm for reconstructing.
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