Table 1 Dose-volume constraints for GI organs (duodenum, stomach, and small bowel) in 12-, 14-, and 17-fraction regimens. Constraints in bold (first row) were considered to be “critical”. V_###GY represents the volume of GI organs receiving dose of ###Gy and higher

From: Evaluating dosimetric constraints for carbon ion radiotherapy in the treatment of locally advanced pancreatic cancer