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.