发明名称 |
Contrast Enhanced MRA With Highly Constrained Backprojection Reconstruction Using Phase Contrast Composite Image |
摘要 |
Mask projection views are obtained prior to the arrival of a contrast agent during a dynamic contrast enhanced MRA study. After the arrival of the contrast agent, a set of undersampled contrast enhanced projection views are obtained for each of a plurality of time frames. Corresponding mask projection views are subtracted from the contrast enhanced projection views to provide sparse contrast enhanced projection view sets. A phase contrast scan of a region of interest is performed prior to or after the arrival of the contrast agent. The phase contrast image is used as a composite image in a HYPR reconstruction of the sparse projection view sets to produce first pass contrast enhanced images. Iterative HYPR reconstructions can also be performed to remove venous information from the reconstructed images.
|
申请公布号 |
US2010286504(A1) |
申请公布日期 |
2010.11.11 |
申请号 |
US20070966237 |
申请日期 |
2007.12.28 |
申请人 |
MISTRETTA CHARLES A;VELIKINA JULIA;JOHNSON KEVIN MICHAEL;GRIST THOMAS M |
发明人 |
MISTRETTA CHARLES A.;VELIKINA JULIA;JOHNSON KEVIN MICHAEL;GRIST THOMAS M. |
分类号 |
A61B5/055 |
主分类号 |
A61B5/055 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|