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Abstract #2813

A Novel Technique for 4D Time-of-Flight MR Angiography using Double Adiabatic Inversion Recovery Pulses

Susumu Takano1, Tetsuo Ogino2, Shuhei Shibukawa1,3, Tomohiko Horie1, Isao Muro4, Nao Kajihara1, Toshiki Saito1, Tetsu Niwa5, Toshiki Kazama5, and Yutaka Imai5

1Department of Radiology, Tokai University Hospital, Kanagawa, Japan, 2Healthcare department, Philips Electronics Japan, Tokyo, Japan, 3Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan, 4Department of Radiology, Tokai University Hachiouji Hospital, Tokyo, Japan, 5Radiology, Tokai University School of Medicine, Kanagawa, Japan

Although previously developed 4D time-of-flight (4D-TOF) at a 3T MR system for evaluating cerebral hemodynamics, this method did not fit at a 1.5T MR system in order to early recovery the brain tissue signals. We proposed a novel 4D-TOF technique using double adiabatic inversion recovery pulse (DIR 4D-TOF) for suppressing background recovery and depiction of intracranial artery at a 1.5T MR system. The results presented show that DIR 4D-TOF with long interval between the first and the second adiabatic inversion recovery pulses could effectively delay T1 recovery of the brain tissue and improved visibility of intracranial artery.

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