发明名称 |
Three dimensional digital subtraction magnetic resonance angiography with limited k-space mask |
摘要 |
A dynamic MRA study of a subject is performed using a 3D fast gradient-recalled echo pulse sequence. The frame rate of the resulting series of reconstructed images is increased by sampling a central region of k-space at a higher rate than the peripheral regions of k-space. A difference image is produced by subtracting a mask formed by central region k-space sampling from a selected image frame formed by central region and peripheral regions k-space sampling.
|
申请公布号 |
US5873825(A) |
申请公布日期 |
1999.02.23 |
申请号 |
US19980055501 |
申请日期 |
1998.04.06 |
申请人 |
WISCONSIN ALUMNI RESEARCH FOUNDATION |
发明人 |
MISTRETTA, CHARLES A;KOROSEC, FRANK R;GRIST, THOMAS M;FRAYNE, RICHARD |
分类号 |
A61B5/055;G01R33/54;G01R33/563;(IPC1-7):A61B5/055 |
主分类号 |
A61B5/055 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|