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Improved magnetization preparation for navigator steady-state free precession 3D coronary MR angiography

✍ Scribed by Thanh D. Nguyen; Pascal Spincemaille; Yi Wang

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
211 KB
Volume
51
Category
Article
ISSN
0740-3194

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✦ Synopsis

Abstract

The purpose of this work was to investigate a new magnetization preparation scheme for navigator steady‐state free precession (SSFP) 3D coronary MR angiography (MRA) that executes the navigator and fat saturation pulses in steady state after the dummy RFs in order to minimize the delay between the magnetization preparation and the image echoes. Compared to the previous preparation scheme that executes the navigator and fat saturation pulses before the dummy RFs, the new scheme was found to provide more effective motion suppression, significantly improved blood‐to‐myocardium contrast‐to‐noise ratio (46%, P < 0.001) at slightly but insignificantly decreased blood signal‐to‐noise ratio (SNR) (2%, P = 0.73), significantly reduced fat SNR (32%, P < 0.001), and better overall image quality (P = 0.05; Wilcoxon paired sample signed rank test). Magn Reson Med 51:1297–1300, 2004. © 2004 Wiley‐Liss, Inc.

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