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

Synopsis

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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