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Abstract #4667

Measurement of blood flow in normal parotid glands using pseudo-continuous arterial spin labeling: comparison between 2D echo-planar and 3D turbo spin-echo sequences.

Katsuhiro Inoue1, Maki Umino2, Ryohei Nakayama3, Shinichi Takase1, Tsunehiro Yamahata1, Makoto Obara4, Masayuki Maeda5, and Hajime Sakuma6

1Department of Radiology, Mie University Hospital, Mie, Japan, 2Department of Radiology, Mie University School of Medicine, Mie, Japan, 3Department of electronic and Computer Engineering, Ritsumeikan University, Shiga, 4Philips Electronics Japan, Tokyo, Japan, 5Department of Advanced Diagnostic Imaging, Mie University School of Medicine, Mie, Japan, 6Department of Radiology, Mie University School of Medicine, Tsu, Mie, Japan

Evaluation of parotid blood flow (PBF) may provide an insight into the pathophysiology of parotid diseases. We evaluated and compared the blood flow of normal parotid glands in six volunteers using 2D-echo-planar (EP) and 3D-turbo-spin-echo (TSE) pseudo-continuous ASL (pCASL) sequences. Visual assessment indicated that 3D-TSE pCASL maps were significantly better for delineating normal parotid glands. 3D-TSE pCASL showed larger PBF values than 2D-EP pCASL. Fewer measurement errors were observed in 3D-TSE pCASL data. We concluded that 3D-TSE pCASL is more suitable for the evaluation of PBF than 2D-EP pCASL.

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