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Abstract #3905

Non-Contrast Enahanced MR Angiography Combined with Peripheral Cardiac Gating at 3T: Comparison of Respiratory Triggered and Breath Held Technique

Takayuki Masui1, Motoyuki Katayama1, Kimihiko Sato1, Kazuma Terauchi1, Kei Tsukamoto1, Masayoshi Sugimura1, Naoyuki Takei2, Mitsuharu Miyoshi2, Kenichi Mizuki1

1Radiology, Seirei Hamamatsu General Hospital, Hamamatsu, Shizuoka, Japan; 2Applied Science laboratory, GE Healthcare, Hino, Tokyo, Japan; 3Radiology, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan

Non-contrast (NC) MRA with peripheral cardiac pulse gating (PG) using respiratory triggering (RT) or breath-held (BH) technique at 3T can be obtained in relatively short period time using ARC and fan beam k-space view ordering and well demonstrate the renal arteries and aorta due to suppression of systolic flow effects. Overall, RT NC MRA with PG provides better visualization of peripheral renal arteries with good background suppression. When image quality of RT NC MRA is not enough to evaluate arteries, BH NC MRA can be used as substitute.