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Abstract #0839

Simultaneous Compensation of Respiratory & Cardiac Motion Effect on Liver DWI

Tetsuo Ogino1,2, Tomohiko Horie3, Hayato Takano4, Thomas Kwee5, Taro Takahara6,7, Marc Van Cauteren8, Tosiaki Miyati9

1Healthcare Division, Philips Electronics Japan, LTD, Minato-ku, Tokyo, Japan; 2Graduate School of Medical Sciences, Kanazawa University, Kanazawa-shi, Ishikawa-ken, Japan; 3Dept. of Radiology, Tokai Univiersity Hospital, Isehara-shi, Kanagawa, Japan; 4Dept. of Radiology, Tokai University Hospital, Isehara-shi, Kanagawa, Japan; 5Department of Radiology, University Medical Center Utrecht, Utrecht, Netherlands; 6Biomedical Engineering, Tokai University School of Engineering, Hiratsuka-shi, Kanagawa, Japan; 7Dept. of Radiology, UMC Utrecht, Utrecht , Netherlands; 8Philips Healthcare; 9Department of Quantum Medical Technology, Kanazawa University, Kanazawa, Ishikawa, Japan

Cardiac and Respiratory motion affects image quality and ADC measurement on abdominal DWI. Combined method of PPU Peripheral Pulse Unit cardiac triggering and "TRON" Respiratory motion compensation on 3.0T DWI is demonstrated. Signal uniformity and ADC uniformity on whole liver is improved. Averaged among 5 healthy volunteers, ADC value ratio between left and right lobe of liver is reduced to 1.04 with PPU TRON from 1.5 with conventional Respiratory Triggering DWI. Average scan time among 5 volunteers was 3:48. PPU TRON enables more uniform image quality and reproducible ADC measurement in clinically feasible scan time.