Endoscopy-MR Image Fusion for Image Guided Procedures

Table 1

It shows the actual number of points in each image, the number of the points detected, the number of correct points, the number of false positive points (FPP), and the number of false negative points (FNP).

(a) With intensity correction

Image	Number of points	Detected points	Correct points	Sensitivity	FPP	FNP
Im1	77	73	73	0.9481	0	4
Im2	77	74	74	0.961	0	3
Im3	77	74	74	0.961	0	3
Im4	77	73	73	0.9481	0	4
Im5	77	76	76	0.987	0	1
Im6	77	78	77	1.0	1	0
Im7	77	77	76	0.987	1	1
Im8	77	76	76	0.987	0	1
Im9	77	76	76	0.987	0	1
Im10	77	76	76	0.987	0	1
Im11	77	76	76	0.987	0	1
Im12	77	76	76	0.987	0	1
Im13	77	77	77	1.0	0	0
Im14	77	76	76	0.987	0	1
Im15	77	77	77	1.0	0	0
Im16	77	76	76	0.987	0	1
Im17	77	76	76	0.987	0	1
Im18	77	76	76	0.987	0	1
Im19	77	76	76	0.987	0	1
Average				0.9822

(b) Without intensity correction

Image	Number of points	Detected points	Correct points	Sensitivity	FPP	FNP
Im1	77	51	51	0.66	0	26
Im2	77	48	48	0.62	0	29
Im3	77	25	24	0.31	1	53
Im4	77	53	52	0.67	1	25
Im5	77	53	53	0.68	0	24
Im6	77	39	38	0.49	1	39
Im7	77	42	42	0.54	0	35
Im8	77	39	39	0.50	0	38
Im9	77	60	60	0.77	0	17
Im10	77	56	55	0.71	1	22
Im11	77	53	53	0.68	0	24
Im12	77	52	52	0.67	0	25
Im13	77	44	44	0.57	0	33
Im14	77	42	41	0.53	1	36
Im15	77	42	40	0.51	2	37
Im16	77	41	40	0.51	1	37
Im17	77	36	35	0.45	1	42
Im18	77	36	35	0.45	1	42
Im19	77	41	33	0.42	2	44
Average				0.5653