Table 5.

PPD for the selected DVH points for H&N patients. Mean and standard deviations (SDs) are shown along with range (in brackets).

		CT – sCT percentage difference (%): H&N Patients
ROI	DVH Point	sCTbda		sCTa
		Mean ± SD	Range	Mean ± SD	Range
PTV	D98%	0.32 ± 0.85	[−0.79;1.96]	0.67 ± 0.62	[−0.19;1.78]
	Dmean	−0.21 ± 0.37	[−0.94;0.27]	−0.09 ± 0.33	[−0.60;0.23]
	D2%	−0.30 ± 0.34	[−0.92;0.06]	0.10 ± 0.29	[−0.36;0.40]
Right parotid	Dmean	−0.11 ± 0.49	[−1.07;0.47]	0.14 ± 0.43	[−0.64;0.68]
	D2%	−0.49 ± 0.63	[−1.48;0.56]	−0.04 ± 0.42	[−0.55;0.52]
Left parotid	Dmean	−0.09 ± 0.43	[−0.97;0.31]	0.08 ± 0.39	[−0.71;0.43]
	D2%	−0.52 ± 0.41	[−1.26;0.01]	−0.46 ± 0.62	[−1.45;0.37]
Spinal Cord	Dmean	−0.30 ± 0.20	[−0.68;−0.06]	0.01 ± 0.31	[−0.22;0.57]
	D2%	−0.22 ± 0.30	[−0.60;0.14]	−0.34 ± 0.37	[−0.88;0.19]