1. National Comprehensive Cancer Network. Clinical practice guidelines in oncology: hepatobiliary cancer. https://www.nccn.org/professionals/physician_gls/pdf/hepatobiliary.pdf
2. National Comprehensive Cancer Network. Clinical practice guidelines in oncology: pancreatic adenocarcinoma. https://www.nccn.org/professionals/physician_gls/pdf/pancreatic.pdf
3. Pancreatic Adenocarcinoma Staging in the Era of Preoperative Chemotherapy and Radiation Therapy;M Zins;Radiology,2018
4. AAPM tutorial. CT image detail and noise;P Sprawls;Radiographics,1992