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Abstract #1484

Differential diagnosis rectal cancer with and without lymph node metastasis using amide proton transfer-weighted imaging and T1 map

Anliang Chen1, Ailian Liu1, Jiazheng Wang2, Zhiwei Shen2, Deshuo Dong1, Wan Dong1, Yuhui Liu1, Qingwei Song1, and Renwang Pu1
1Radiology, The First Affiliated Hospital of Dalian Medical University, Dalian, China, 2Philips Healthcare, Beijing, China

Amide proton transfer-weighted (APTw) imaging can be used to assess changes of intracellular protein concentration and the pH value. Non-invasive visualization and quantification of tissue composition could be detected by T1 map. In this study, we aim to explore the value in difference of rectal cancer with and without lymph node metastasis using APTw imaging combined with T1 map. High diagnostic efficacy (AUC: 0.891; sensitivity: 81.8%; specificity: 100.0%) was achieved with combination of APT and T1 values.

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