Title | Improved magnetization preparation for navigator steady-state free precession 3D coronary MR angiography. |
Publication Type | Journal Article |
Year of Publication | 2004 |
Authors | Nguyen TD, Spincemaille P, Wang Y |
Journal | Magn Reson Med |
Volume | 51 |
Issue | 6 |
Pagination | 1297-300 |
Date Published | 2004 Jun |
ISSN | 0740-3194 |
Keywords | Adipose Tissue, Adult, Coronary Vessels, Heart, Humans, Magnetic Resonance Angiography |
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). |
DOI | 10.1002/mrm.20095 |
Alternate Journal | Magn Reson Med |
PubMed ID | 15170854 |
Related Institute:
MRI Research Institute (MRIRI)