Fast lipid-suppressed MR temperature mapping with echo-shifted gradient-echo imaging and spectral-spatial excitation.
作者： Jacco A. de Zwart , Fr�d�ric C. Vimeux , Christophe Delalande , Paul Canioni , Chrit T.W. Moonen
DOI: 10.1002/(SICI)1522-2594(199907)42:1<53::AID-MRM9>3.0.CO;2-S
关键词:
摘要: The water proton resonance frequency (PRF) is temperature dependent and can thus be used for magnetic (MR) thermometry. Since lipid frequencies do not depend on temperature, fat suppression essential PRF-based mapping. efficacy of echo-shifted (TE > TR) gradient-echo imaging with spectral-spatial excitation demonstrated, resulting in accurate rapid, lipid-suppressed, MR method was validated phantoms, fatty duck liver, rat thigh, demonstrating improvements both the speed precision Heating a thigh focused ultrasound monitored vivo an accuracy 0.37°C time resolution 438 msec. Magn Reson Med 42:53–59, 1999. © 1999 Wiley-Liss, Inc.
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