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Comparative Study
FIESTA-ET: high-resolution cardiac imaging using echo-planar steady-state free precession.
- Glenn S Slavin and Manojkumar Saranathan.
- General Electric Medical Systems, Waukesha, Wisconsin, USA. glenn.slavin@med.ge.com
- Magn Reson Med. 2002 Dec 1; 48 (6): 934-41.
AbstractThis work describes a technique that combines multishot echo-planar imaging (EPI) with steady-state free precession (SSFP, also known as TrueFISP, FIESTA, and balanced FFE) for multislice, cine MR imaging of the heart. Unlike recently reported methods, the technique presented here (FIESTA-ET) is high-resolution and does not require offline reconstruction or postprocessing. It is therefore suitable for use on standard clinical scanners. FIESTA-ET was compared with conventional FIESTA imaging in 10 volunteers and quantitative analyses of myocardial signal-to-noise ratios (SNR) and ventricular volumes were performed. While providing comparable image quality, FIESTA-ET required half the acquisition time per slice of conventional FIESTA. Because multiple slices could be imaged in a single breathhold, the entire heart could be scanned in less than 2 min. Although the FIESTA-ET images exhibited an unexpected increase (P < 0.0005) in myocardial SNR of 16% over FIESTA, the volumetric measurements showed excellent correlation.Copyright 2002 Wiley-Liss, Inc.
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