发明名称 |
Method and apparatus using post contrast-enhanced steady-state free precession in MR imaging |
摘要 |
A system and method are disclosed that use the steady-state free precessing (SSFP) technique for MR imaging to allow the acquisition of MR angiography images in which the acquisition is not time dependent upon the first passage of a contrast agent. The technique includes applying a pulse sequence with refocusing S- signals from a train of RF pulses to a desired field-of-view (FOV) in a patient in which a contrast bolus has been injected. An SSFP image of the desired FOV is acquired, together with an S- SSFP mask image of the desired FOV. The S- SSFP mask image is subtracted from the SSFP image in order to reconstruct an image with improved visualization of the arterial and venous structures and reduce mis-registration artifacts.
|
申请公布号 |
US2002087070(A1) |
申请公布日期 |
2002.07.04 |
申请号 |
US20000681090 |
申请日期 |
2000.12.30 |
申请人 |
FOO THOMAS K.F.;HO VINCENT B. |
发明人 |
FOO THOMAS K.F.;HO VINCENT B. |
分类号 |
G01R33/48;A61B5/055;G01R33/28;G01R33/561;(IPC1-7):A61B5/05 |
主分类号 |
G01R33/48 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|