Acute coronary syndrome on non-electrocardiogram-gated contrast-enhanced computed tomography

Table 1 Studies investigating the ability of non-ECG-gated contrast-enhanced computed tomography to detect acute coronary syndrome

Ref.	Type of CT	CT phase	No. of Patients	No. of ACS	No. of positive MPD	True Positive	False Positive	True Negative	False Negative	Sensitivity (%)	Specificity (%)	PPV (%)	NPV (%)
Gosalia et al[15], 2004	SD	Arterial	37	18	16	15	1	18	3	83	95	94	86
Moore et al[16], 2006	16-slice	Arterial	87	11	10	6	4	72	5	55	95	60	94
Mano et al[17], 2015	64-slice	Arterial	154	28	43	26	17	109	2	93	87	60	98
Watanabe et al[18], 2016	64-slice	Arterial	23	13	12	11	1	9	2	85	90	92	82
Yamazaki et al[19], 2016	16/64-slice	Parenchymal	47	32	30	29	1	14	3	91	93	97	82

ACS: Acute coronary syndrome, MPD: Myocardial perfusion defect, PPV: Positive predictive value, NPV: Negative predictive value, SD: Single detector.