| 摘要 |
<p>A method is provided for 3-D MR imaging of structure such as a cardiac region of a subject, which is disposed to cyclical motion. The method comprises detecting commencement of each of a succession of motion cycles, and acquiring a set of MR views of the region during each motion cycle. Each view is at a known radial distance from the center (48) of a two-dimensional k-space (50), and each set includes a view of lowest spatial frequency (38d-44d), which is located proximate to the k-space center (48). The order in which the views of respective sets are acquired is selected so that the lowest frequency views (38d-44d) of respective sets are each acquired at the same specified time, following commencement of their respectively corresponding motion cycles. The views of each set collectively define a segment in the k-space, respective segments being placed in an interleaved spiral or elliptical arrangement with respect to one another. <IMAGE></p> |
