Abstract #0621

Improved detection of capsular enhancement in hepatocellular carcinoma using multiphasic hepatic arterial imaging and DIfferential Sub-sampling with Cartesian Ordering (DISCO) in gadoxetic acid-enhanced magnetic resonance imaging

Shintaro Ichikawa¹, Utaroh Motosugi¹, Tetsuya Wakayama², Takashi Kakegawa¹, Hiroshi Kumagai¹, and Hiroshi Onishi¹

¹University of Yamanashi, Yamanashi, Japan, ²GE Healthcare Japan, Tokyo, Japan

DIfferential Subsampling with Cartesian Ordering (DISCO) is a new high spatiotemporal resolution, dynamic contrast-enhanced magnetic resonance imaging (MRI) technique. We evaluated the usefulness of multiple (n=6) hepatic arterial phases (HAPs) with DISCO in gadoxetic acid-enhanced dynamic MRI for detecting capsular enhancement in hepatocellular carcinoma (HCC). Such capsular enhancement is detected more frequently by combining portal venous phase (PVP) images and multiphasic hepatic arterial images with DISCO. Combining DISCO with PVP improved the liver imaging reporting and data system (LI-RADS) v2014 score from LR4 to LR5.

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