Free-Stop Scanning for 3D TSE

Guobin Li¹, Maxim Zaitsev¹, Esther Meyer², Dominik Paul², Jrgen Hennig¹

The measurement time of 3D MR acquisition with turbo spin echo (TSE) sequence is usually long, and very prone to patient movement during the scanning. This leads to degrading of reconstructed image by motion artifacts. An compressed sensing based acquisition scheme is proposed to address this problem, which has these features: scanning stops at any time when motion is detected by built-in navigators; the distribution of acquired k-space points is always optimal whenever the scanning is interrupted; Artifact-free images are reconstructed if a minimum amount of data has been acquired.