CN100587512C - Method and device for recognizing radiofrequency signal receiver coil in MRI system - Google Patents
Method and device for recognizing radiofrequency signal receiver coil in MRI system Download PDFInfo
- Publication number
- CN100587512C CN100587512C CN200610089102A CN200610089102A CN100587512C CN 100587512 C CN100587512 C CN 100587512C CN 200610089102 A CN200610089102 A CN 200610089102A CN 200610089102 A CN200610089102 A CN 200610089102A CN 100587512 C CN100587512 C CN 100587512C
- Authority
- CN
- China
- Prior art keywords
- coil
- radiofrequency signal
- signal
- imaging
- mri system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The present invention relates to the field of a nuclear magnetic resonance, in particular relates to a method and an equipment for recognizing the radio-frequency signal receiving coil in the MRI system. In order to solve the problem of the coil recognition, the process step 1 of the present invention obtains the imaging radio-frequency signal via a gathering unit; the step 2, the comparing unit compares the above signal with the standard imaging radio-frequency signal of each coil, if the error of the comparison result is in the scope which is stipulated in advance, then the number of the coil to be tested is determined; the step 3, the number of the coil is output to be tested. The present invention has the beneficial effect of enabling the MRI system to recognize automatically the coilbeing used in the system, and the accuracy is very high.
Description
Technical field
The present invention relates to physics, particularly the nuclear magnetic resonance field is the method and the device of radiofrequency signal recognition receiving coil in the MRI system concretely.
Background technology
In the MRI system, there are various radio-frequency coils to be used to clinical practice or research.The coil at different application position (for example hand coil and head coil), the coil of different size (for example large size body coil, small size body coil) has different imaging parameters.These imaging parameters are stored in the corresponding document of principal computer of magnetic resonance system.These files are called coil file (Coil File).
Coil file (coil file) comprises the dependent imaging parameter of coil, for example coil identifies (numbering), the title of each unit of coil, coil dimension, tuning and the off resonance signal controlling (Tune and detunecontrol signal) of each radio-frequency transmissions/receiving element of coil, application site, use nucleic, putting position at sick bed, the magnitude of voltage of radio frequency transmissions, Fourier conversion zoom factor (FFT scale factor), radio-frequency power dissipation factor (RF power loss), the received signal array mode (whether the signal that is each unit can make up) that each unit of coil is mutual, polarizability data (the circular polarisation Circular Polarization of coil received signal, reverse circular polarisation Anti Circular Polarization or left-handed/dextrorotation linear polarization Left/Right Linear Polarization) or the like.
Wherein, thus the radiofrequency signal that the Fourier conversion zoom factor of coil will be used to that coil is collected carry out convergent-divergent and make coil obtain satisfied picture quality.The radio-frequency power dissipation factor will provide the absorption coefficient of coil self to radiofrequency signal, and be used to the calculating of patient's specific absorption ratio (SAR).
Usually, the magnetic resonance signal receiving coil all is to be connected with the MRI system by cable in existing MRI system.A kind of method of widely used identification receiving coil is, the MRI system is by reading the resistance value of receiving coil identification circuit, thereby obtains the identification code (ID) of receiving coil.According to the receiving coil identification code of being obtained, computer system is the receiving coil file of retrieve stored in file system, thereby obtains the correlation parameter of receiving coil.
Fig. 1 has shown the block scheme of using magnetic resonance system of the present invention.11 is wireless induction coil or array of sensor coils.12 is the reception loop that is connected with system.13 for being used for acquisition of magnetic resonance signals, digitizing and image re-construction system.14 is the principal computer of storage coil file.15 for being used for the image demonstration, and the man-machine interface of operation input is such as display, keyboard, mouse etc.
Array of sensor coils has one or more inductive coil groups, and each inductive coil group has one or more inductive coils to be formed, and uses a plurality of overlapping inductive coil coils can increase imaging area coverage and sensitivity.The inductive coil group of an inductive coil formation can be exported the radiofrequency signal that is used for imaging, left-handed or dextrorotation linear polarization signal (LP:linearpolarization).The inductive coil group of 3 overlapping inductive coil formations all will be exported 3 possible radiofrequency signals that are used for imaging, circularly polarized signal (CP:circular polarization), oppositely circularly polarized signal and left-handed or dextrorotation linear polarization signal (left-handed or dextrorotation by coil time design decision).Fig. 2 has described the structure of an array of sensor coils.21 is inductive coil group 1, comprising inductive coil 23,24,25.22 is inductive coil group 2, comprising inductive coil 26,27,28.
When using inductive coil in the MRI system, promptly receive human body and produce magnetic resonance signal by wireless inductive coil, and send to the reception loop that is connected with the MRI system with the form of induced signal, perhaps use wireless inductive coil to receive the signal of the transmitting coil that is connected with the MRI system, and this inductive coil is launched the radiofrequency signal that receives to human body.Because inductive coil do not have cable to be connected with system, thereby system's coil that can not use by the automatic identification of the hardware approach of similar identification circuit.Ways of addressing this issue is to specify coil name or the numbering of using by human-computer interaction interface at present, the MRI system finds the respective coil file from storage system in view of the above, thereby obtain the coil characteristic parameter, to be arranged to the image parameter and the radio frequency absorption parameter in when picture.Manual operation is normally subject to the training or the experience of operating personnel's acceptance, has increased the probability of makeing mistakes, and the influence that is subjected to tag error on the coil easily or can not discerns.Make the MRI system in operation, certain degree of difficulty arranged like this, and the mistake use of MRI online implementing circle may occur.
The coil of mistake uses and will cause the MRI system to select wrong coil file, to such an extent as to influence the correct calculation of SAR, also may cause the radio-frequency (RF) energy that imposes on current patient low excessively (can cause the undesirable of imaging effect), perhaps too high (can make the fervescence at certain position of patient cause dangerous) perhaps causes obvious influence to image quality.
Summary of the invention
In order to overcome the above problems, the object of the present invention is to provide the method and the device of radiofrequency signal recognition receiving coil in the MRI system.
A kind of in the MRI system method of radiofrequency signal recognition receiving coil, comprise,
Step 2, comparing unit compares the standard imaging radiofrequency signal of above-mentioned signal and each coil, if the error of comparative result within the scope of predesignating, is then determined the described test coil numbering for the treatment of;
Step 3 is exported the above-mentioned test coil numbering for the treatment of.
Described imaging radiofrequency signal comprises: circularly polarized signal, linear polarization signal, anti-circularly polarized signal.
In the described step 2 the standard imaging radiofrequency signal of imaging radiofrequency signal and each coil compared and be meant, carry out at least a of following three kinds of manner of comparison: will treat that at least one circularly polarized signal of test coil compares with the corresponding standard circularly polarized signal; To treat that perhaps at least one linear polarization signal of test coil compares with corresponding standard linear polarization signal; To treat that perhaps at least one anti-circularly polarized signal of test coil compares with the anti-circularly polarized signal of corresponding standard.
Before described step 3, also comprise the step that reports an error, if do not find corresponding standard digitalized image radiofrequency signal, then output error message.
A kind of in the MRI system method of radiofrequency signal recognition receiving coil, comprise,
Step 2 is carried out computing and is obtained result data described imaging radiofrequency signal;
Step 3, comparing unit compares the standard results data of The above results data and each coil, if the error of comparative result within the scope of predesignating, is then determined the described test coil numbering for the treatment of;
Step 4 is exported the above-mentioned test coil numbering for the treatment of.
Described imaging radiofrequency signal comprises: circularly polarized signal, linear polarization signal, anti-circularly polarized signal.
Computing in the described step 2 is meant, described circularly polarized signal, and the linear polarization signal carries out division arithmetic between the two in the anti-circularly polarized signal, to obtain the described characteristic information for the treatment of test coil.
The standard results data with result data and each coil in the described step 3 compare and are meant, the described characteristic information of test coil for the treatment of is compared with the standard feature information of each coil.
Also comprise a match step after described step 2, a plurality of described characteristic informations are carried out match, the result of match is the linear function or the equation of higher order.
The standard results data with result data and each coil in the described step 3 compare and are meant, the linear function slope or the equation of higher order of described fitting result are compared with the standard fit result of each coil.
Computing in the described step 2 is meant, calculates the imaging scope that this treats test coil according to the described test coil imaging radiofrequency signal for the treatment of.
The standard results data with result data and each coil in the described step 3 compare and are meant, described imaging range data is compared with the standard imaging range data of each coil.
Before described step 4, also comprise the step that reports an error, if do not find corresponding standard result data, then output error message.
A kind of in the MRI system device of radiofrequency signal recognition receiving coil, comprising:
Collecting unit is used to gather the imaging radiofrequency signal for the treatment of test coil;
Comparing unit, be connected with described collecting unit, be used for the described imaging radiofrequency signal of test coil and the standard imaging radiofrequency signal of each coil treated compared, perhaps compare with the described operation result data of test coil imaging radiofrequency signal and the standard results data of each coil treated;
Output unit is used to export above-mentioned comparative result.
Described imaging radiofrequency signal comprises: circularly polarized signal, linear polarization signal, anti-circularly polarized signal.
Also comprise an arithmetic element, with the described circularly polarized signal for the treatment of test coil, the linear polarization signal, carry out division arithmetic between the two in the anti-circularly polarized signal, to obtain the characteristic information that this treats test coil, perhaps calculate the imaging range data for the treatment of test coil, and send operation result to comparing unit according to above-mentioned imaging radiofrequency signal.
Also comprise a match unit, be connected between described arithmetic element and the comparing unit, a plurality of described characteristic informations are carried out match,, and send the result to comparing unit with the straight slope or the equation of higher order that obtains described characteristic information.
Also comprise the unit that reports an error, be connected between comparing unit and the output unit, if in the coil file, do not find corresponding digital to change into picture radiofrequency signal, then output error message.
Beneficial effect of the present invention is, can make the MRI system discern the coil that is just using automatically in system, and accuracy rate is very high, makes the MRI system applies convenient.
Description of drawings
Fig. 1: the composition of existing MRI system
Fig. 2: the inductive coil group constitutes synoptic diagram;
Fig. 3 is the inventive method process flow diagram;
Fig. 4: a kind of embodiment process flow diagram of the inventive method;
Fig. 5: apparatus of the present invention synoptic diagram.
Embodiment
Below, carry out following detailed description for the present invention in conjunction with the accompanying drawings.
Coil in the embodiments of the invention is the inductive coil group that 3 inductive coils overlap, and the accuracy that obtains CP, LP, anti-CP signal like this is than higher.The present invention is not only applicable to the inductive coil group of this structure, is applicable to an inductive coil yet, the perhaps inductive coil group of being made up of N inductive coil, the complex coil array that perhaps has N inductive coil group to constitute.The present invention also is applicable to the identification of the receiving coil that has lead in the prior art.
In the present invention, CP, the LP of inductive coil or receiving coil, anti-CP is signal digitalized, will be wherein two signals to be divided by (can be that CP is divided by LP, perhaps LP is divided by CP, perhaps CP is divided by situations such as anti-CP), the result of its division is exactly the characteristic information of this coil, and this characteristic information is the information of this coil stationary, and the variation with measuring condition does not change.
In the solution of the present invention, the standard imaging radiofrequency signal and/or the characteristic information of storage coil in advance in the coil file of inductive coil or receiving coil, described imaging radiofrequency signal includes but not limited to CP and/or LP and/or anti-CP signal.Perhaps set up a mapping table in principal computer, it has the sign of inductive coil or receiving coil at least, standard imaging radiofrequency signal and/or standard feature information.
When the MRI system applies, principal computer obtains to treat the imaging radiofrequency signal of test coil, compares with the image-forming information in each coil file with the imaging radiofrequency signal of gathering again; Or, compare with standard feature information by being calculated to be the characteristic information that obtains this coil as radiofrequency signal; Perhaps relatively treat the characteristic information of test coil and the difference between the real-time standard feature both information of calculating of certain known coil; Thereby determine the coil file of this coil, the MRI system carries out imaging based on the parameter in this coil file.
Fig. 3 is the inventive method process flow diagram.Step 1 obtains the imaging radiofrequency signal of inductive coil to be measured or receiving coil; Step 2 is compared the described data of test coil for the treatment of with the normal data of each coil; Step 3, the output comparative result.
Be example with the inductive coil below, possible several implementations be described:
Use inductive coil group recited above or single inductive coil, a line phase is encoded (under a certain gradient in magnetic field, the space encoding that delegation's signal is carried out) scans, to be used for the signal of imaging and the standard imaging radiofrequency signal of a plurality of inductive coil files and compare, if identical then can determine to use which inductive coil file.
A. a kind of standard water mould is scanned, acquisition is used for CP and/or the LP and/or the anti-CP signal of imaging, should be signal digitalized, then with a plurality of inductive coil files in standard C P and/or LP and/or anti-CP signal relatively, if the error of comparative result within admissible scope, then can be determined the coil file that this inductive coil should use.The mode of this simple relatively CP and/or LP and/or anti-CP signal, the standard water mould is meant, the water mould that conditions such as the quality of water mould, profile are used when making inductive coil standard imaging radiofrequency signal is identical, and inductive coil to be measured is also identical with the relative position of water mould, can guarantee that like this imaging radiofrequency signal and the imaging radiofrequency signal difference in the inductive coil file measured can be very not big, to improve the accuracy of this method.Admissible error is meant, by the error range of designer's regulation, does not do unique qualification.
B. scan any one water mould, CP, the LP, the anti-CP that gather is signal digitalized, will be wherein two signals to be divided by (can be that CP is divided by LP, perhaps LP is divided by CP, perhaps CP is divided by situations such as anti-CP) obtain the characteristic information of this inductive coil to be measured, in advance in each inductive coil file storage standard feature information separately, make comparisons treating the characteristic information of test coil and the standard feature information of inductive coil file, if identical or error in the scope of a permission, then can be determined the coil file that this inductive coil should use.In order to increase the accuracy of measurement result, the characteristic information of inductive coil to be measured can be carried out match (time-delay countershaft), if fitting result is linear, then relatively whether its slope is identical or approaching with the slope stored in certain inductive coil file; If the result of match is the form that presents the higher-order function curve, then relatively in this higher-order function or curve and the inductive coil file corresponding higher-order function or curve whether identical or approaching.
Use inductive coil group recited above, single inductive coil or receiving coil, to the multirow phase encoding (under a certain gradient in magnetic field, the space encoding that the multirow signal is carried out) scans, obtain a plurality of CP, LP or anti-CP signal simultaneously, purpose is the error that reduces CP, LP, anti-CP signal, will be used for the signal of imaging and the respective signal of a plurality of inductive coil files and compare, if identical then can determine to use which inductive coil file.
A. a kind of standard water mould is scanned, acquisition is used for CP and/or the LP and/or the anti-CP signal of imaging, should be signal digitalized, then with a plurality of inductive coil files in standard CP and/or LP and/or anti-CP signal relatively, if the error of comparative result within admissible scope, then can be determined the coil file that this inductive coil should use.The mode of this simple relatively CP and/or LP and/or anti-CP signal, the standard water mould is meant, the water mould that conditions such as the quality of water mould, profile are used when making the inductive coil file is identical, and inductive coil to be measured is also identical with the relative position of water mould, can guarantee that like this imaging radiofrequency signal and the imaging radiofrequency signal difference in the inductive coil file measured can be very not big, to improve the accuracy of this method.Admissible error is meant, by the error range of designer's regulation, does not do unique qualification.
B. scan any one water mould, CP, the LP, the anti-CP that gather is signal digitalized, will be wherein two signals to be divided by (can be that CP is divided by LP, perhaps LP is divided by CP, perhaps CP is divided by situations such as anti-CP) obtain the characteristic information of inductive coil to be measured, in advance in each inductive coil file storage standard feature information separately, make comparisons treating the characteristic information of test coil and the characteristic information of a plurality of inductive coil files, if identical or error in the scope of a permission, then can be determined the coil file that this inductive coil should use.In order to increase the accuracy of measurement result, the characteristic information of inductive coil to be measured can be carried out match (time-delay countershaft), if fitting result is linear, then relatively whether its slope is identical or approaching with the slope stored in certain inductive coil file; If the result of match is the form that presents equation of higher order curve, then relatively in this equation of higher order or curve and the inductive coil file the corresponding equation of higher order or curve whether identical or approaching.
Fixing spine array coil in the MRI system (in the MRI system fixing always coil) also can provide CP, and oppositely CP and LP (R/L) signal calculate the characteristic information of this spine array coil in advance or in real time.Inductive coil to be measured is measured a water mould and is obtained the imaging radiofrequency signal; and calculate the characteristic information of this inductive coil to be measured; the standard feature information of this characteristic information and spine coil is compared; difference between the standard feature information of the characteristic information of inductive coil to be measured and spine array coil is some particular values; judge that this particular value just can determine that this inductive coil is a coil of measuring which part of health, gives the suitable coil file of this inductive coil with configuration.
Body coil fixing in the MRI system exists all the time, also can provide CP, and oppositely CP and LP (R/L) signal calculate the standard feature information of this body coil in advance or in real time.Obtain the imaging radiofrequency signal of inductive coil delegation to be measured or multirow, and calculate its characteristic information, the standard feature information of this characteristic information and body coil is compared, difference between the characteristic information of inductive coil to be measured and the characteristic information of body coil is some particular values, judge that this particular value just can determine that this inductive coil is a coil of measuring which part of health, gives the suitable coil file of this inductive coil with configuration.
Equally, inductive coil to be measured can be compared with the standard imaging radiofrequency signal of known receiving coil in the MRI system or inductive coil, judge the difference between them, just can determine that this inductive coil is a coil of measuring which part of health, gives the suitable coil file of this inductive coil with configuration.But be to use this method should guarantee to obtain to treat that the measuring condition of test coil imaging radiofrequency signal is the same with the measuring condition of standard imaging radiofrequency signal.
Equally, inductive coil to be measured can be compared with the standard feature information of known receiving coil in the MRI system or inductive coil, judge the difference between them, just can determine that this inductive coil is a coil of measuring which part of health, gives the suitable coil file of this inductive coil with configuration.
For human body, inductive coupler coils all is to cover a part of health, inductive coil such as wrist and head, their imaging scope is different, by adopting computings more of the prior art just can obtain the imaging range data to CP, LP, anti-CP signal, the imaging range data of measured inductive coil is compared with the imaging range data of a plurality of coil files of induction, with the coil file of determining that inductive coil should use.For example, the imaging scope of measured inductive coil is 10 square centimeters, and then this inductive coil is the inductive coil of hand, adopts the coil file of hand inductive coil to be configured when the MRI system applies, to obtain best effect.
If the MRI system does not have enough receiving cables, so also can reach the purpose of determining coil by repeatedly scanning.
Fig. 4 is the embodiment process flow diagram that the present invention is based on a line phase code line scanning.
Step 2 obtains inductive coil CP raw data, enters step 4;
Step 3 obtains inductive coil LP (left-handed or dextrorotation by coil time design decision) raw data, enters step 5;
Step 4, the digital information by row fast Fourier transform (FFT) acquisition CP signal enters step 6;
Step 5, the digital information by row fast Fourier transform (FFT) acquisition CP signal enters step 6;
Step 6 is compared the digital information that obtains with the CP and the LP information of all inductive coil files;
Step 7 if all inductive coil files do not have identical or close information, then reports an error, otherwise enters step 8;
Step 8, decision coil ID.
Fig. 5 is apparatus of the present invention synoptic diagram.In principal computer, obtain the imaging radiofrequency signal of inductive coil to be measured by collecting unit; Comparing unit compares corresponding data in this signal and a plurality of coil file; Output unit is exported comparative result, and output may be the numbering of inductive coil, or corresponding inductive coil file; Also further have an arithmetic element between converting unit and comparing unit, this unit is responsible for CP, LP, anti-CP digital signal are carried out division calculation, to obtain to treat the characteristic information of test coil; Perhaps calculate the imaging range data for the treatment of test coil, and operation result is exported to comparing unit, characteristic information or imaging scope and each coil corresponding standard data are compared by comparing unit according to CP, LP, anti-CP digital signal.Further, between arithmetic element and comparing unit, also has a match unit, the characteristic information of inductive coil to be measured or receiving coil is carried out match, form straight line or higher-order function, comparing unit compares the standard straight-line or the higher-order function of itself and each coil, to obtain measurement result more accurately.Also comprise the unit that reports an error, be connected between comparing unit and the output unit, if do not find respective coil file, then output error message.
Determined coil ID, also just be equivalent to determine imaging region, can set the zoom factor of brightness according to this inductive coil file, radio frequency absorption power SAR, and this coil is used for the imaging of which part of health, information such as putting position.
Beneficial effect of the present invention is, the information of imaging region can be provided automatically to the MRI system, avoids the manual maloperation of selecting imaging region to occur, and according to the characteristic file of inductive coil, it is more accurate that SAR is calculated, and imaging effect is better.
Above embodiment only is used to illustrate the present invention, but not is used to limit the present invention.
Claims (15)
1. the method for a radiofrequency signal recognition receiving coil in the MRI system is characterized in that,
Step 1 obtains to treat the imaging radiofrequency signal of test coil by collecting unit;
Step 2, comparing unit compares the standard imaging radiofrequency signal of above-mentioned signal and each coil, if the error of comparative result within the scope of predesignating, is then determined the described test coil numbering for the treatment of;
Step 3 is exported the above-mentioned test coil numbering for the treatment of.
2. according to claim 1 a kind of in the MRI system method of radiofrequency signal recognition receiving coil, it is characterized in that described imaging radiofrequency signal comprises: circularly polarized signal, linear polarization signal, anti-circularly polarized signal.
3. according to claim 2 a kind of in the MRI system method of radiofrequency signal recognition receiving coil, it is characterized in that, in the described step 2 the standard imaging radiofrequency signal of imaging radiofrequency signal and each coil compared and be meant, carry out at least a of following three kinds of manner of comparison: will treat that at least one circularly polarized signal of test coil compares with the corresponding standard circularly polarized signal; To treat that perhaps at least one linear polarization signal of test coil compares with corresponding standard linear polarization signal; To treat that perhaps at least one anti-circularly polarized signal of test coil compares with the anti-circularly polarized signal of corresponding standard.
4. according to claim 1 a kind of in the MRI system method of radiofrequency signal recognition receiving coil, it is characterized in that, before described step 3, also comprise the step that reports an error, if do not find corresponding standard digitalized image radiofrequency signal, then output error message.
5. the method for a radiofrequency signal recognition receiving coil in the MRI system is characterized in that,
Step 1 obtains to treat the imaging radiofrequency signal of test coil by collecting unit;
Step 2 is carried out computing and is obtained result data described imaging radiofrequency signal;
Step 3, comparing unit compares the standard results data of The above results data and each coil, if the error of comparative result within the scope of predesignating, is then determined the described test coil numbering for the treatment of;
Step 4 is exported the above-mentioned test coil numbering for the treatment of;
Wherein, described imaging radiofrequency signal comprises: circularly polarized signal, linear polarization signal, anti-circularly polarized signal;
Computing in the described step 2 is meant, described circularly polarized signal, and the linear polarization signal carries out division arithmetic between the two in the anti-circularly polarized signal, to obtain the described characteristic information for the treatment of test coil; Perhaps, the computing in the described step 2 is meant, calculates the imaging scope that this treats test coil according to the described test coil imaging radiofrequency signal for the treatment of.
6. according to claim 5 a kind of in the MRI system method of radiofrequency signal recognition receiving coil, it is characterized in that, the standard results data with result data and each coil in the described step 3 compare and are meant, the described characteristic information of test coil for the treatment of is compared with the standard feature information of each coil.
7. according to claim 5 a kind of in the MRI system method of radiofrequency signal recognition receiving coil, it is characterized in that, also comprise a match step after described step 2, a plurality of described characteristic informations are carried out match, the result of match is the linear function or the equation of higher order.
8. according to claim 7 a kind of in the MRI system method of radiofrequency signal recognition receiving coil, it is characterized in that, the standard results data with result data and each coil in the described step 3 compare and are meant, the linear function slope or the equation of higher order of described fitting result are compared with the standard fit result of each coil.
9. according to claim 5 a kind of in the MRI system method of radiofrequency signal recognition receiving coil, it is characterized in that, the standard results data with result data and each coil in the described step 3 compare and are meant, described imaging range data is compared with the standard imaging range data of each coil.
10. according to claim 5 a kind of in the MRI system method of radiofrequency signal recognition receiving coil, it is characterized in that, before described step 4, also comprise the step that reports an error, if do not find corresponding standard result data, then output error message.
11. the device of a radiofrequency signal recognition receiving coil in the MRI system is characterized in that comprising:
Collecting unit is used to gather the imaging radiofrequency signal for the treatment of test coil;
Comparing unit is connected with described collecting unit, is used for the described imaging radiofrequency signal of test coil and the standard imaging radiofrequency signal of each coil treated compared;
Output unit is used to export above-mentioned comparative result.
12. according to claim 11 a kind of in the MRI system device of radiofrequency signal recognition receiving coil, it is characterized in that described imaging radiofrequency signal comprises: circularly polarized signal, linear polarization signal, anti-circularly polarized signal.
13. the device of a radiofrequency signal recognition receiving coil in the MRI system is characterized in that comprising:
Collecting unit is used to gather the imaging radiofrequency signal for the treatment of test coil;
Comparing unit is connected with described collecting unit, is used for comparing with the described operation result data of test coil imaging radiofrequency signal and the standard results data of each coil treated;
Output unit is used to export above-mentioned comparative result;
Wherein, described imaging radiofrequency signal comprises: circularly polarized signal, linear polarization signal, anti-circularly polarized signal;
Described device also comprises an arithmetic element, with the described circularly polarized signal for the treatment of test coil, the linear polarization signal, carry out division arithmetic between the two in the anti-circularly polarized signal, to obtain the characteristic information that this treats test coil, perhaps calculate the imaging range data for the treatment of test coil, and send operation result to comparing unit according to above-mentioned imaging radiofrequency signal.
14. according to claim 13 a kind of in the MRI system device of radiofrequency signal recognition receiving coil, it is characterized in that, also comprise a match unit, be connected between described arithmetic element and the comparing unit, a plurality of described characteristic informations are carried out match, with the straight slope or the equation of higher order that obtains described characteristic information, and send the result to comparing unit.
15. according to claim 11 or 13 or 14 described a kind of in the MRI system device of radiofrequency signal recognition receiving coil, it is characterized in that, also comprise the unit that reports an error, be connected between comparing unit and the output unit, if in the coil file, do not find corresponding digital to change into picture radiofrequency signal, then output error message.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610089102A CN100587512C (en) | 2006-08-03 | 2006-08-03 | Method and device for recognizing radiofrequency signal receiver coil in MRI system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610089102A CN100587512C (en) | 2006-08-03 | 2006-08-03 | Method and device for recognizing radiofrequency signal receiver coil in MRI system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101118278A CN101118278A (en) | 2008-02-06 |
| CN100587512C true CN100587512C (en) | 2010-02-03 |
Family
ID=39054471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610089102A Active CN100587512C (en) | 2006-08-03 | 2006-08-03 | Method and device for recognizing radiofrequency signal receiver coil in MRI system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100587512C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101803921B (en) * | 2010-03-19 | 2011-07-20 | 苏州工业园区朗润科技有限公司 | Device for identifying RF coil in NMR system |
| CN102651043B (en) * | 2012-03-30 | 2014-01-29 | 南方医科大学 | Hybrid design method for radio frequency coil |
| CN103852743B (en) * | 2012-11-28 | 2017-08-22 | 上海联影医疗科技有限公司 | Monitoring method and device, the test device and magnetic resonance system of radio-frequency coil |
| CN108344959B (en) * | 2017-01-25 | 2020-06-26 | 西门子(深圳)磁共振有限公司 | Adapter and coil recognition system of magnetic resonance imaging system |
| CN107669273B (en) * | 2017-11-07 | 2021-02-19 | 上海联影医疗科技股份有限公司 | Magnetic resonance equipment scanning system, scanning method and computer readable storage medium |
-
2006
- 2006-08-03 CN CN200610089102A patent/CN100587512C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101118278A (en) | 2008-02-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100587512C (en) | Method and device for recognizing radiofrequency signal receiver coil in MRI system | |
| US11508487B2 (en) | Full-digital rod position measurement devices and methods thereof | |
| CN112384818A (en) | Radio frequency coil signal chain for low field MRI system | |
| CN105958889B (en) | Single resistor current method of sampling and system | |
| CN103337087B (en) | A kind of compressed sensing image reconstructing method based on pseudoinverse adaptive algorithm | |
| CN107799194B (en) | The adjusting of intelligent stick position threshold value and Performance Testing method | |
| KR20160044450A (en) | Method for the control of a magnetic resonance system | |
| US20110101980A1 (en) | Magnetic resonance imaging apparatus | |
| EP2652653A1 (en) | Magnetic resonance examination system with preferred settings based on data mining | |
| US20210203192A1 (en) | Wireless power transmission system and method | |
| CN110542793B (en) | Passive device intelligent equivalent circuit model, parameter measuring device and working method | |
| CN109581270A (en) | Method based on multi-scale wavelet transform Fast Identification CVT failure | |
| US20180180671A1 (en) | Power drive transistor resonance sensor | |
| US10527695B2 (en) | Systems and methods for efficient magnetic resonance fingerprinting scheduling | |
| CN103543328A (en) | Measuring system for measuring at least one electrical quantity, electrical transforming staton comprising such a measuring system and associated measuring method | |
| CN104871025A (en) | Automated decoupling of RF receive coil elements | |
| CN104422914A (en) | Compatible magnetic resonance receiver | |
| CN104749539A (en) | Correction method, device and system for magnetic resonance signal | |
| CN109581055A (en) | A kind of transformer winding fault type detection method based on Multiresolution Decomposition method | |
| CN105823964B (en) | Power transmission line comprehensive Fault Locating Method towards intelligent substation | |
| CN104921725A (en) | Method and device for detecting working condition of radio frequency coil | |
| CN104434102B (en) | Method for measuring HF driving pulses | |
| CN109633237B (en) | Method and equipment for correcting total current meter reading of turnout based on least square method | |
| CN114818023A (en) | Method and system for identifying electrified state of three-phase cable | |
| CN103901370B (en) | Magnetic resonance system, radio frequency coil testing device and channel matching method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210119 Address after: Room 516, 5th floor, 38 Yinglun Road, China (Shanghai) pilot Free Trade Zone, Pudong New Area, Shanghai 200031 Patentee after: SIEMENS HEALTINEERS Ltd. Address before: 100102 No. 7 South Central Road, Chaoyang District, Beijing, China Patentee before: Siemens (China) Co.,Ltd. |