发明授权
- 专利标题： Automatic measurement of gradient field distortion
- 专利标题（中）： 自动测量梯度场失真
-
申请号： US09191862申请日： 1998-11-12
-
公开(公告)号： US06211675B1公开(公告)日： 2001-04-03
- 发明人: Alexander Ganin , Kevin F. King
- 申请人： Alexander Ganin , Kevin F. King
- 主分类号： G01V300
- IPC分类号： G01V300
摘要：
An MRI system automatically performs a calibration procedure to calculate optimal compensation parameter values for all three gradient pre-emphasis filters. A single fixture is employed to measure the errors caused by gradient pulses produced by each of the three gradient systems. The measured errors are used to calculate a gradient error function and the optimal compensation parameter values are calculated for each pre-emphasis filter by finding the minimum in the gradient error function.