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Abstract #4297

Value of ESWAN combined with DTI in the differential diagnosis of solid pseudopapillary tumor and neuroendocrine tumor of pancreas

Lu Wang1, Yi Wang2, Xinqi Wang1, Longshuang Wang1, Qinhe Zhang3, Lizhi Xie4, and Ailian Liu3
1School of Medical Imaging, Dalian Medical University, Dalian, China, 2DepartmentofRadiology,DalianFriendshipHospital, Dalian, China, 3Department of Radiology, the First Affiliated Hospital of Dalian Medical University, Dalian, China, 4GE Healthcare, MR Research China, Beijing, China


It is difficult to differentiate the solid pseudopapillary tumor of the pancreas (SPTP) from pancreatic neuroendocrine tumor (PNET). Enhanced T2* weighted angiography (ESWAN) technique can simultaneously obtain amplitude, phase, R2* and T2* values, which can quantitatively assess the magnetic sensitivity characteristics of tissues. DTI can evaluate the diffusion of water molecules in living tissues. This study founded that R2* and T2* of ESWAN, fractional aniso (FA) and volume ratio aniso (VRA) of DTI were significantly different (P<0.05) and the AUC was 0.860(sensitivity: 100%; specificity: 79.2%). Therefore, ESWAN combined with DTI may be an effective method to identify SPTP and PNET.

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