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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