Segmented k‐space fast cardiac imaging using an echo‐train readout

A segmented k‐space fast gradient‐echo pulse sequence with an echo‐train readout (FGRE‐ET) was developed for high‐quality cine imaging of the heart in reduced scan times. Using segmented FGRE‐ET, cine images of the heart can be acquired in as few as 1–5 heart beats and do not display the geometric distortion and flow‐related artifacts typically associated with cardiac echoplanar imaging (EPI). Segmented FGRE‐ET was compared with conventional segmented FGRE and with conventional multi‐phase EPI in normal volunteers. Segmented FGRE‐ET was found to have reduced temporal blurring compared with segmented FGRE for cine imaging in 4 heart beats (P < 0.05). Also, segmented FGRE‐ET did not display geometric distortion characteristic of conventional EPI (P < 0.05). Segmented FGRE‐ET may be particularly applicable to functional cardiac stress testing because it allows versatile cine imaging in very short breath‐holds. Magn Reson Med 41:609–613, 1999. Published 1999 Wiley‐Liss, Inc.

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