首页>
外国专利>
Undersampling 3DMRI of using shell k-space sampling trajectory
Undersampling 3DMRI of using shell k-space sampling trajectory
展开▼
机译:使用壳k空间采样轨迹的欠采样3DMRI
展开▼
页面导航
摘要
著录项
相似文献
摘要
CROSS-REFERENCE TO RELATED APPLICATIONS A 3D MRI image is acquired as a series of spherical shells of increasing radius. Each shell is sampled by one or more interleaved spiral sampling trajectories and to shorten the scan time one or more spiral sampling trajectories are skipped in the larger shells that sample the periphery of k-space. Motion correction of the acquired k-space data is accomplished by reconstructing tracking images from each of the shells and locating markers therein which indicate object movement from a reference position. The k-space data is corrected using this movement information.
展开▼