TABLE 1

Accuracy of Ultrasonography vs. Cholescintigraphy for Acute Cholecystitis: Direct-Comparison Investigation

			Cholescintigraphy		Ultrasonography
Publication	Year	No. of patients	Sensitivity	Specificity	Sensitivity	Specificity
Stadalnik et al. (5)	1978	120	87	100	70	93
Zeman et al. (11)	1981	200	98	81	67	82
Worthen et al. (8)	1981	113	95	100	76	100
Ralls et al. (10)	1982	59	86	84	86	90
Freitas et al. (6)	1982	195	98	90	81	60
Samuels et al. (7)	1983	194	97	93	97	64
Chatziioannou et al. (9)	2000	107	92	89	40	89