Cardiac imaging: Comparison of two-shot echo-planar imaging with fast segmented k-space and conventional gradient-echo cine acquisitions

✍ Scribed by Daniel A. Leung; Jörg F. Debatin; Simon Wildermuth; Graeme C. McKinnon; Gustav K. Von Schulthess

• Publisher: John Wiley and Sons
• Year: 1995
• Tongue: English
• Weight: 665 KB
• Volume: 5
• Category: Article
• ISSN: 1053-1807
• DOI: 10.1002/jmri.1880050611

✦ Synopsis

Abstract

We compared the cardiac image quality of multishot echo‐planar imaging (EPI), segmented K‐space, and conventional cine acquisitions. Three techniques were used to obtain gated multiphase acquisitions of an axial section traversing both ventricles in 10 volunteers: two‐shot EPI acquired nonsequentially over two heart beats breath‐held segmented K‐space cine with eight K‐space lines acquired per cardiac trigger over 16 R‐R intervals, also breath‐held and 24 cine phases obtained over 256 R‐R intervals. Intraventricular SNRs with two‐shot EPI were superior to segmented K‐space cine acquisitions (P <.005) and not statistically different from conventional cine acquisitions (P <. 1). Intraventricular signal was most homogeneous on conventional cine images (P <.05). Coronary artery visualization and myocardial delineation were better on the EPI image set than on segmented K‐space cine images (P <.05). Two‐shot EPI provides high‐quality gated cardiac images with an acquisition time of only 2 seconds.