Table 4.

Summary of regional cold and hot spots for HN.6 clinical protocol.

ROI Name	Relation to ROI of Isodose Lines
hot_out_70	70 Gy isodose line ‐ PTV70 ‐ ring70
hot63	69.3 Gy isodose line ‐ PTV70 ‐ ring70
hot56	61.6 Gy isodose line ‐ PTV70 ‐ PTV63 ‐ ring70 ‐ ring 63
hot70	75.6 Gy isodose line
cold70	modPTV70 ‐ 70 Gy isodose line
cold63	optPTV63 ‐ 63 Gy isodose line
cold56	optPTV56 ‐ 56 Gy isodose line