Fast magnetization-driven preparation for imaging of contrast-enhanced coronary arteries during intra-arterial injection of contrast agent |
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| Authors: | Gui Dawei Tsekos Nikolaos V |
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| Institution: | Cardiovascular Imaging Laboratory, Mallinckrodt Institute of Radiology, Washington University Medical School, St. Louis, Missouri 63110, USA. |
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| Abstract: | PURPOSE: To 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 METHODS: Computer 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 T1250 msec, and about a 30% reduction for 20 msec
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| Keywords: | magnetic resonance angiography contrast‐enhanced vessels magnetization‐driven preparation multiple inversion recovery pulses saturation pulse |
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