Areas of pancreatic parenchyma that exhibited nonenhancement on contrast-enhanced CT (CECT) were regarded as necrosis. Pancreatic parenchymal necrosis was diagnosed only if a follow-up CECT examination was performed in patients who had previously undergone a plain CT scan. Two radiologists (the first author and the corresponding author) with more than 3 years of experience in abdominal radiology independently reviewed all CT images without knowledge of the patient characteristics and clinical outcome. When the CT findings observed by both radiologists were in agreement, those findings were regarded as the final result. When the CT findings observed by both readers were inconsistent, the 2 radiologists reanalyzed the CT images and a definitive result was reached by consensus. Based on the CT image analysis, the EPIC (Table 1) and Balthazar (Table 2) scores were calculated and recorded for each patient. We did not evaluate the CTSI because only 42 patients in our retrospective cohort underwent CECT.