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Abstract #2329

The measurements of APTw in Rectal Cancer: the impact of ROI methods on APTw values and interobserver variability

Xiaoyao Lei1, Yaxin Niu1, Longchao Li1, Min Tang1, Yanrong Yang1, Xiaoling Zhang1, Xin Zhang1, Juan Li1, and Xiuzheng Yue2
1Shaanxi Provincial People's Hospital, Xi-an, China, 2Philips Healthcare, Beijing, China

The study aimed to explore the impact of three methods of delineating region of interest (ROI) methods on the measurement of tumor amide proton transfer-weighted (APTw) values. The result showed that whole volume ROI method was reproducible and could reflect the pathophysiological condition of the tumor.

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