CT Imaging of Coronary Stents: Past, Present, and Future

Table 2

Summary of studies on 4-, 16-, and 40-slice CT imaging for assessing coronary stent patency and rule out of ISR.

Author/year	Scanner (rows)	Patients (n)	Stents (n)	Non evaluable (%)	Sensitivity (%)	Specificity (%)	PPV (%)	NPV (%)
Maintz et al. 2003 [23]	4	29	47	19.1	100	100	100	100
Krüger et al. 2003 [21]	4	20	32	0	100	100	100	100
Ligabue et al. 2004 [24]	4	48	72	17.8	100	100	100	100
Mazzarotto et al. 2006 [25]	4	24	34	9.4	91.3	66.6	95.5	50
Schuijf et al. 2004 [26]	16	22	68	23	75	96	na	na
Gilard et al. 2005 [27]	16	29	29	7	100	93	100	93
Cademartiri et al. 2005 [28]	16	51	74	na	83.3	98.5	83.3	97.3
Watanabe et al. 2006 [29]	16	31	42	16.7	83	90	63	96
Gilard et al. 2006 [30]	16	143	128 (≤3 mm)	45.7	54	100	100	94
			104 (<3 mm)		86	100	100	99
Kitagawa et al. 2006 [31]	16	42	61	31.1	100^(1)	100^(1)	100^(1)	100^(1)
Ohnuki et al. 2006 [32]	16	16	20	5	75	88	75	93
Kefer et al. 2007 [33]	16	50	73	na	67	98	92	89
Chabbert et al. 2007 [34]	16	134	145	8.3	90.5^(2)	66.5^(2)	42^(2)	96^(2)
Soon et al. 2007 [35]	16	37	47	4	71	97	83	95
Mühlenbruch et al. 2007 [36]^(3)	16	14	20	na	100	100	100	100
Tedeschi et al. 2008 [37]	16	72	90	21	82	96	87	94
Kitagawa et al. 2008 [38]	16	38	47	26	100	74	67	100
Gaspar et al. 2005 [39]	40	65	111	4.5	74.1	83.3	58.8	90.9
Total/mean		264	865	18.1	82.0	90.7	83.6	93.9

na: not available; PPV: positive predictive value; NPV: negative predictive value; ⁽¹⁾subgroup of 21 assessable stents with angiographic correlation; ⁽²⁾mean of two observers; ⁽³⁾only CABG stents.