发明授权
- 专利标题: Method and apparatus for NMR imaging
- 专利标题(中): NMR成像方法和装置
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申请号: US92303申请日: 1987-09-02
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公开(公告)号: US4905699A公开(公告)日: 1990-03-06
- 发明人: Koichi Sano , Tetsuo Yokoyama , Hideaki Koizumi
- 申请人: Koichi Sano , Tetsuo Yokoyama , Hideaki Koizumi
- 申请人地址: JPX Tokyo
- 专利权人: Hitachi, Ltd.
- 当前专利权人: Hitachi, Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX61-207055 19860903
- 主分类号: A61B5/055
- IPC分类号: A61B5/055
摘要:
In order to permit the detection of a respiratory motion and an imaging synchronized with the respiration by an NMR imaging apparatus itself without any special hardware, a sequence for detecting the respiratory motion is repeated for a short time immediately before the measurement of an image signal to detect the position and speed of the respiratory motion, and a desired image signal is measured in synchronism with the detected position. Alternatively, the respiratory motion is detected immediately after the measurement of an image signal, and the measured image signal is corrected in accordance with the detected amount to obtain a desired image signal synchronized with the respiration.