Abstract #3514

Reduction of Signal Loss in Diffusion-Weighted Imaging of the Upper Abdomen:motion Correction Using Bipolar Motion Probing Gradients

Isao Muro¹, Tetso Ogino², Tomohiko Horie¹, Taro Takahara³, Thomas Kwee³, Yutaka Imai¹, Marc Van Cauteren⁴

¹Department of Radiology, Tokai University, Isehara, Japan; ²Philips Electronics Japan, Shinagawa, Japan; ³Department of Radiology, University Medical Center Utrecht, Utrecht, Netherlands; ⁴Philips Healthcare Asia Pacific, Shinagawa, Japan

In diffusion-weighted imaging (DWI) of the body, cardiac motion gives signal loss in the adjacent left lobe of the liver, causing poor visibility of lesions and overestimation of apparent diffusion coefficient (ADC) measurements. Motion correction (MC) using dual bipolar motion probing gradients may solve this issue. We conducted phantom and volunteer studies using DWI with and without MC and showed MC is effective in preventing signal loss and reducing falsely increased ADCs in the left lobe of the liver.