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Catheter‐directed contrast‐enhanced coronary MR angiography in swine using magnetization‐prepared True‐FISP
Author(s) -
Green Jordin D.,
Omary Reed A.,
Schirf Brian E.,
Tang Richard,
Li Debiao
Publication year - 2003
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.10642
Subject(s) - magnetization , contrast (vision) , nuclear magnetic resonance , nuclear medicine , precession , magnetic resonance imaging , coronary angiography , magnetic resonance angiography , contrast effect , radiology , materials science , medicine , physics , optics , magnetic field , condensed matter physics , quantum mechanics , myocardial infarction
Contrast‐enhanced (CE) coronary magnetic resonance angiography (MRA) following intraarterial (IA) injection of contrast agent was compared using two sequences in swine: magnetization‐prepared fast imaging with steady‐state precession (True‐FISP), and magnetization‐prepared fast low‐angle shot (FLASH). Thick‐slice projection images were acquired with submillimeter in‐plane spatial resolution (0.9 × 0.8 mm 2 ). The magnetization‐preparation scheme provided a clear delineation of the major coronary arteries with excellent background suppression. The True‐FISP acquisition resulted in an increase in signal‐to‐noise ratio (SNR) and contrast‐to‐noise ratio (CNR) by approximately a factor of 2 over FLASH ( P < 0.05). Magnetization‐prepared True‐FISP is a promising technique for catheter‐directed CE thick‐slice projection coronary MRA. Magn Reson Med 50:1317–1321, 2003. © 2003 Wiley‐Liss, Inc.