Table 2: Summary of studies on 4-, 16-, and 40-slice CT imaging for assessing coronary stent patency and rule out of ISR.

Author/yearScanner (rows)Patients (n)Stents (n)Non evaluable (%)Sensitivity (%)Specificity (%)PPV (%)NPV (%)

Maintz et al. 2003 [23]4294719.1100100100100
Krüger et al. 2003 [21]420320100100100100
Ligabue et al. 2004 [24]4487217.8100100100100
Mazzarotto et al. 2006 [25]424349.491.366.695.550
Schuijf et al. 2004 [26]162268237596nana
Gilard et al. 2005 [27]16292971009310093
Cademartiri et al. 2005 [28]165174na83.398.583.397.3
Watanabe et al. 2006 [29]16314216.783906396
Gilard et al. 2006 [30] 16 143128 (≤3 mm) 45.75410010094
104 (<3 mm)8610010099
Kitagawa et al. 2006 [31]16426131.1100(1)100(1)100(1)100(1)
Ohnuki et al. 2006 [32]161620575887593
Kefer et al. 2007 [33]165073na67989289
Chabbert et al. 2007 [34]161341458.390.5(2)66.5(2)42(2)96(2)
Soon et al. 2007 [35]163747471978395
Mühlenbruch et al. 2007 [36](3)161420na100100100100
Tedeschi et al. 2008 [37]1672902182968794
Kitagawa et al. 2008 [38]163847261007467100
Gaspar et al. 2005 [39]40651114.574.183.358.890.9

Total/mean26486518.182.090.783.693.9

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.