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Abstract #1432

Accelerated Time-SLIP Cerebral MR Angiography by Use of Dual Inversion Pulse for Background Suppression

Yoshiyuki Ishimori1, Masahiko Monma1, Izumi Anno1, Tomoko Miyata2

1Department of Radiological Sciences, Ibaraki Prefectural University of Health Sciences, Ami-machi, Inashiki-gun, Ibaraki, Japan; 2Toshiba Medical Systems Co. Ltd.

Time-Spatial Labeling Inversion Pulse (time-SLIP) techniques are utilized as a non-contrast MR angiography using arterial spin labeling (ASL). However, it takes double time for subtraction process between on/off of ASL to visualize cerebral angiograms because of high signal of cerebrospinal fluid (CSF). Single acquisition time-SLIP using dual inversion pulse was investigated in the phantom and volunteer study. As a result, both of CSF and brain parenchyma were suppressed enough with appropriate inversion times. Thus cerebral angiograms could be visualized sufficiently. Accelerated time-SLIP MRA will be useful in terms of imaging time and scan plane flexibility compared to time-of-flight MRA.