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Abstract #4480

Accelerated Supra-Aortic Artery Imaging Without Contrast Agent Using Combined Compressed Sensing and Parallel Imaging

Naoyuki Takei1, Kevin F. King2, Masayoshi Sugimura3, Koji Yoneyama3, Takayuki Masui3, Hiroyuki Kabasawa1

1GE Healthcare, Hino, Tokyo, Japan; 2GE Healthcare, Waukesha, WI, United States; 3Seirei Hamamatsu General Hospital, Hamamatsu, Shizuoka, Japan

In Non-Contrast Enhanced MR Angiography (NCE-MRA), accelerated scanning helps to add into established clinical routine protocol for screening and follow-up. Compressed sensing (CS) is a promising technique to accelerate scanning for NCE-MRA which has sparse image. In this work, the combination of CS and parallel imaging was applied to NCE-MRA and demonstrated feasible. Volunteer scan was performed as acceleration factor of CS+PI was changed. The CS +PI sequence reduced scan time down to 1:17 with net acceleration 10.8 identifying the main arteries. In conclusion, CS+PI improves supra-aortic artery depiction and achieves higher acceleration compared to PI only.