• J Magn Reson Imaging · Nov 2006

    Fast magnetization-driven preparation for imaging of contrast-enhanced coronary arteries during intra-arterial injection of contrast agent.

    • Dawei Gui and Nikolaos V Tsekos.
    • Cardiovascular Imaging Laboratory, Mallinckrodt Institute of Radiology, Washington University Medical School, St. Louis, Missouri 63110, USA.
    • J Magn Reson Imaging. 2006 Nov 1; 24 (5): 1151-8.

    PurposeTo implement a short-duration magnetization preparation sequence, which consists of a saturation followed by multiple inversion pulses, for imaging of short-T1 species and suppression of long-T1 species.Materials And MethodsComputer optimizations were performed to derive preparation schemes that 1) suppress long-T1 background species with T1>or=250 msec, 2) maximize the MZ of contrast-enhanced (CE) structures with T1ResultsComputer simulations generated preparation schemes with durations of 165-225 msec depending on the number of preparation pulses used, which generated saturation of over 98% for T1>250 msec, and about a 30% reduction for 20 msecConclusionThis work demonstrates that fast magnetization-driven preparation schemes can be implemented for fast imaging of CE coronary vessels with efficient saturation of background species.Copyright (c) 2006 Wiley-Liss, Inc.

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