| 摘要 |
PROBLEM TO BE SOLVED: To reduce the influence of positional deviation, while dispensing with synchronization in sensitivity measurement, in a nuclear magnetic resonance imaging (MRI) system. SOLUTION: The sensitivity measurement is performed in an asynchronization manner and also echo arrangement order is controlled at random. In this case, respective echo signals and motion information (a respiration level, a cardiac time phase, etc.) of a subject when the echo signals are acquired are respectively preserved (206). In a sensitivity image, the echo signal close to the motion information in actual measurement is selected among the whole preserved echo signals and motion information (209), and the selected echo signal is arranged in a k-space grid by weighting addition based on the motion information (210). Consequently, while dispensing with synchronization, the sensitivity measurement is performed, where the influence of the position deviation due to the motion of the subject is reduced. COPYRIGHT: (C)2010,JPO&INPIT
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