EJNMMI Physics

Table 2 Figures of merit for CT-based and subsequent MI coregistration

From: Comparison of PET/CT and whole-mount histopathology sections of the human prostate: a new strategy for voxel-wise evaluation

Patient	CT-based coregistration			Subsequent MI
	Method	DSC	R ² [%]	R ²	Parameters (3D)
					Shift [mm]	Rotation [°]
1	ManReg	0.78	20.1	45.8	7	0
	ScalFactReg	0.78	12.4	37.5	8	0
	DefReg	0.91	21.9	42.4	7	0
2	ManReg	0.86	40.1	54.5	7	8
	ScalFactReg	0.86	41.2	54.1	7	0
	DefReg	0.91	34.3	48.3	9	1
3	ManReg	0.83	64.5	80.7	3	2
	ScalFactReg	0.85	67.3	74.6	3	2
	DefReg	0.92	50.8	62.3	6	1
4	ManReg	0.72	49.3	62.1	6	1
	ScalFactReg	0.75	63.4	62.6	6	1
	DefReg	0.86	57.0	57.9	6	1
5	ManReg	0.73	45.2	56.4	6	0
	ScalFactReg	0.85	37.7	41.4	10	2
	DefReg	0.91	49.2	52.7	9	0
6	ManReg	0.87	66.6	80.4	4	4
	ScalFactReg	0.83	58.9	78.2	4	1
	DefReg	0.92	67.9	79.1	3	3
7	ManReg	0.73	29.0	42.5	8	0
	ScalFactReg	0.81	26.5	35.5	8	0
	DefReg	0.89	11.4	40.0	8	0
8	ManReg	0.83	51.1	68.2	2	10
	ScalFactReg	0.84	37.8	63.4	4	0
	DefReg	0.91	37.8	62.5	18	14
Mean	ManReg		45.7	61.3
	ScalFactReg		43.2	55.9
	DefReg		41.3	55.6

DSC and R ² for CT-based coregistration methods (left part of the table). On the right-hand side, the R ² value according to subsequent PET-based MI coregistration is shown

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