Table 15.

Summary of regional cold and hot spots for anal canal cancer case.

ROI Name	Relation to ROI of Isodose Lines
hotspots	54 Gy isodose line ‐ PTV54_eval ‐ ring54
hot54	58 Gy isodose line
hot45	49.5 Gy isodose line ‐ PTV54_eval ‐ ring54
hot36	39.6 Gy isodose line ‐ PTV45_eval ‐ PTV54_eval ‐ ring54 ‐ ring45
cold36	PTV36_eval ‐ 36 Gy isodose line
cold45	PTV45_eval ‐ 45 Gy isodose line
cold54	PTV54_eval ‐ 54 Gy isodose line