297. Radiomic CT features of pancreatic neuroendocrine tumors are robust against inter-observer delineation uncertainty

Purpose High accuracy in delineating pancreatic neuroendocrine tumors (NET) is a pre-requisite for the assessment of CT-based biomarkers, including radiomic features (RF). The aim of this study was to quantify inter-observer variability in delineating NET on CT images and its impact on RF. Methods Three radiologists contoured volumes of 32 NET patients. The contours were delineated using arterial or venous phase. The contours delineated on...