Table 1.

Mean and maximum dose (Gy) for the original plan for 20 fractions calculated on the original scan, the original plan computed for 10 fractions on the original scan and 10 fractions on the CT deformed to the CBCT, and the original plan computed for 10 fractions plan on the original scan added to the replan computed for 10 fractions on the CT deformed to the CBCT.

Organ/Target	Original Plan: 20 fx calculated on original scan		Original Plan: 10 fx calculated on original scan and 10fx calculated on deformed CT		Original plan: 10 fx calculated of original scan and 10 fx re‐plan calculated on deformed CT.		% Change between original plan versus re‐plan on deformed CT versus
	mean (Gy)	max (Gy)	mean	max	mean	max	mean	max
Oesophagus	9.22	31.69	10.90	34.26	9.09	29.10	−19.9	−17.8
Larynx	27.82	53.05	30.97	53.78	26.83	52.65	−15.4	−2.1
Oral cavity	25.63	42.45	25.72	44.38	24.63	42.61	−4.4	−4.2
Parotid left	7.22	12.62	7.24	11.95	6.03	11.96	−20.0	0.0
Parotid right	25.36	51.62	27.44	5.33	21.05	51.32	−30.4	−3.9
Pharynx	31.25	54.82	31.08	54.8`	29.20	53.87	−6.4	−1.7
Spinal cord	12.41	18.86	12.93	19.31	14.19	21.87	8.9	11.7
Submandibular left	18.33	24.75	19.60	25.74	14.65	19.95	−33.8	−29.0
Submandibular right	48.23	51.93	51.94	53.39	49.61	52.27	−4.7	−2.1
Trachea	16.35	52.77	20.63	53.72	17.78	52.53	−16.0	−2.3
PTV	51.91	56.02	52.39	55.58	51.70	54.21	−1.3	−2.5