Abstract #3068

Motion correction for abdominal diffusion weighted images by using fitting accuracy guided free-form deformation.

Yihao Guo¹, Zhentai Lu¹, Yingjie Mei², Jing Zhang³, and Yanqiu Feng^1,4,5

¹School of Biomedical Engineering and Guangdong Provincial Key Laboratory of Medical Image Processing, Southern Medical University, GuangZhou, China, People's Republic of, ²Philips Healthcare, GuangZhou, China, People's Republic of, ³Department of Medical Imaging Center, Nanfang Hospital, Southern Medical University, GuangZhou, China, People's Republic of, ⁴Laboratory of Biomedical Imaging and Signal Processing, The University of Hong Kong, Hong Kong SAR, China, People's Republic of, ⁵Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong SAR, China, People's Republic of

Free-form deformation registration has been widely used but would lead to unwanted bias in the registration of different b-value images to b0 image, especially high-b-value images, due to signal attenuation dependent on b values. We use fitting accuracy to guid free-form deformation registration. The results of our proposed method can well realign the different b-value images in liver edges and improve the fitting accuracy.

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