Table 2.

Performance of CTC for detection of polyps 5, 6–9, and 10 mm and carcinomas

Author	Year	Technique	Number of patients	Sensitivity (%)
				Polyps 5 mm	Polyps 6–9 mm	Polyps 10 mm	Colorectal carcinomas
Hara	1997	Helical	70	25–27	56–69	67–73	NA
Dachman	1998	Helical	44	15	33 +	83 #	NA
Fenlon	1999	Helical	100	55	83	91	NA
Fletcher	2000	Helical	180	NA	47*	75	NA
Kay	2000	Helical	38	NA	38*	91	NA
Yee	2001	Helical	300	59	80*	90	8/8 (100)
Macari	2002	Multi-detector	105	12	70	93	NA
Iannaccone	2003	Multi-detector	158	51	83	100	100
Johnson	2003	Helical, multi-detector	703	NA	54*	63	NA
Taylor	2003	Multi-detector	54	44	75	100	5/6 (83)
Pickhardt	2003	Multi-detector	1233	NA	NA	94	2/2 (100)

NA, not applicable. Polyp size category: *5–9 mm; ⁺5–8 mm; ^#>8 mm.