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Abstract #4165

Reproducibility Improvement of ADC Measurement on Left Lobe of Liver

Tetsuo Ogino1, Toshiaki Miyati2, Marc Van Cauteren3, Tomohiko Horie4, Yutaka Imai5

1Healthcare department, Philips Electronics Japan, LTD, Minato-ku, Tokyo, Japan; 2Kanazawa University, Kanazawa, Ishikawa, Japan; 3Philips Healthcare LTD, Minato-ku, Tokyo, Japan; 4Dept. of Radiology, Tokai University Hospital, Isehara, Kanagawa, Japan; 5Radiology, Tokai University, Isehara, Kanagawa, Japan

With conventional respiratory triggering DWI, left lobe of liver ADC is artificially elevated by cardiac motion and suffer from poor reproducibility. The combined method of PPU and respiratory navigator slice tracking on 3.0T scanner is proposed. The method eliminating the cardiac motion effect reduced left/right lobe normal parenchyma ADC difference times to 1.01 from 1.7 times of conventional respiratory triggering method. 20 slices were acquired 40-80 sec depending on subject. It allows uniform and reproducible ADC measurement in clinically feasible scan time.