✦ LIBER ✦

FIESTA-ET: High-resolution cardiac imaging using echo-planar steady-state free precession

✍ Scribed by Glenn S. Slavin; Manojkumar Saranathan

Publisher: John Wiley and Sons
Year: 2002
Tongue: English
Weight: 408 KB
Volume: 48
Category: Article
ISSN: 0740-3194
DOI: 10.1002/mrm.10321

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✦ Synopsis

This 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.

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