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Abstract #2164

2D-Turbo Spin-Echo Sequence with Incremental Trigger Delay Time for Monitoring Vascular Signal Suppression in Peripheral Pulse Gated Black-blood Lung MR Imaging

Ryotaro Kamei1, Yuji Watanabe2, Sungtak Hong3, Koji Sagiyama1, Ryo Murayama1, Satoshi Kawanami2, and Hiroshi Honda1

1Department of Clinical Radiology, Kyushu University Graduate School of Medical Sciences, Fukuoka, Japan, 2Department of Molecular Imaging and Diagnosis, Kyushu University Graduate School of Medical Sciences, Fukuoka, Japan, 3Philips Electronics Japan, Ltd, Tokyo, Japan

Breath-hold black-blood magnetic resonance imaging of the lung provides promising results in focal lesion detection. Using peripheral pulse gating, we intended to monitor the degree of vascular suppression and the changes in tissue contrast more closely than in the previously reported methods. Black-blood fat-saturated T2-weighted images were acquired for healthy volunteers with incremental delay time points throughout the pulse cycle. The relative ratios of the specific tissue to the muscle were quantified. The systolic phase provided superior black-blood effects and was considered optimal for signal acquisition.

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