Method for producing a time-resolved series of 3D magnetic resonance angiograms during the first passage of contrast agent

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. Image frames are reconstructed at each sampling of the central k-space region using the temporally nearest samples from the peripheral k-space regions.