Table 4.

Mean absolute difference (MAD), mean difference (MD), Dice similarity coefficient (DSC), and root mean square difference (RMSD) obtained for each patient between the sCT and CT in the metastatic lesion. DSC and RMSD were obtained using a threshold of 150 Hounsfield units. Patients are stratified per lesion type

Lesion type	P#	MAD (HU)	MD (HU)	DSC (1)	RMSD (mm)
Osteolytic	P4	188	100	0.74	1.42
	P5	27	12	0.77	0.75
	P8	108	− 51	0.60	3.87
Osteoblastic	P3	166	101	0.82	2.08
	P6	235	− 229	0.96	0.89
	P7	81	29	0.99	2.08
	P9	149	− 123	0.49	7.30
Mixed	P1	94	− 64	0.56	4.93
	P2	143	− 55	0.86	2.86