http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106872920-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01R33-586 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01R33-48 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01R33-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01R33-58 |
| filingDate | 2017-01-22^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-05-05^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-05-05^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-106872920-B |
| titleOfInvention | Radio frequency calibration method and device for magnetic resonance imaging system |
| abstract | The application provides a radio frequency calibration method and a radio frequency calibration device for a magnetic resonance imaging system, wherein the method comprises the following steps: and in the first search range, carrying out iterative scanning by taking a preset basic amplitude as an initial amplitude of the applied radio frequency pulse, and acquiring a first echo amplitude signal of a designated spin echo in the first correction range. And judging whether a minimum value exists in the first echo amplitude signal or not. And when the first echo amplitude signal has a minimum value, acquiring a radio frequency amplitude value corresponding to the minimum value, and taking the radio frequency amplitude value as a first pulse calibration value for correcting the 90-degree flip angle. According to the method, the basic radio frequency amplitude obtained on the water model is used as an initial value, iterative search in the range of 0-180 degrees is not needed, the iterative range and the calibration time are shortened, and the calibration efficiency is improved. |
| priorityDate | 2017-01-22^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
| Predicate | Subject |
|---|---|
| isDiscussedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/anatomy/ANATOMYID916 http://rdf.ncbi.nlm.nih.gov/pubchem/compound/CID962 http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID419512635 |
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