Multiphase computed tomography radiomics of pancreatic intraductal papillary mucinous neoplasms to predict malignancy

Figure 1 Low and high grade intraductal papillary mucinous neoplasms on computed tomography. A: Axial post contrast arterial phase computed tomography (CT) image magnified at the pancreatic head shows a hypodense well defined pathology proven intraductal papillary mucinous neoplasm (IPMN) with low grade dysplasia (blue arrow). Arterial gray level co-occurrence matrix (GLCM) entropy was 9.31; B: Axial post contrast arterial phase CT image in a different patient with pathology proven IPMN with high grade dysplasia (yellow arrow). Arterial GLCM entropy was 11.52. These lesions could be described similarly using qualitative terminology, however in this study, quantitative radiomics features improved prediction of malignant pathology compared to conventional measures alone.