REDUCE RF POWER REQUIREMENTS OF MULTISLICE IMAGING W/ SINGLE ADIABATIC FREQUENCY

$0P41FY2001RRNIH

University Of Minnesota Twin Cities, Minneapolis MN

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Abstract

One of the originally proposed goals was to establish magnetization preparation for contrast generation using B1 independent adiabatic pulses for a variety of imaging applications to overcome B1 variations encountered at high fields and use surface coils for transmission and reception for imaging, a necessity at the high fields due to difficulties of using "body" coils. Such contrast preparations were initially developed and implemented for cardiac "tagging" using segmented BIR-4 or adiabatic DANTE pulses. Last year, a novel adiabatic contrast preparation in spin-echo imaging has also been introduced, yielding excellent contrast and a reduction in power deposition in human brain imaging at 4T.

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