发明名称 |
Respiratory displacement and velocity measurement using navigator MRI echo signals |
摘要 |
<p>Navigator signals (348) are acquired during a cardiac gated MRI scan to measure the position and velocity components of respiratory motion. Acquired cardiac image views are discarded and/or corrected based on the measurement of the positional and velocity components of respiratory motion to reduce motion artifacts. In one embodiment the navigator pulse sequence includes velocity encoding gradient (340, 356), and in a second embodiment, velocity is determined by measuring the change in diaphragm position between successive navigator pulse sequences (324, 236). <IMAGE></p> |
申请公布号 |
EP1113288(A2) |
申请公布日期 |
2001.07.04 |
申请号 |
EP20000311149 |
申请日期 |
2000.12.12 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
DU, YIPING P.;MCVEIGH, ELLIOT R. |
分类号 |
G01R33/54;A61B5/055;G01R33/48;G01R33/567;(IPC1-7):G01R33/567 |
主分类号 |
G01R33/54 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|