Role of multidetector computerized tomography in coronary in-stent restenosis

ABSTRACT

We described the role of multi detector computerized tomography in the detection and exclusion of coronary in-stent re-stenosis compared with the conventional coronary angiography. 30 patients pretreated with coronary stenting and complaining of angina like symptoms underwent dual source coronary angiography one day before performing conventional coronary angiography. 47 stents were examined 43 of them were assessable by DSCT-CA and the calculated sensitivity, specificity, negative predictive value, positive predictive value and overall accuracy of all assessable stents were 100%, 90%, 100%, 81% and 93%, respectively. When analyzing the results for stents sensitivity, specificity, negative predictive value, positive predictive value and overall accuracy of all assessable stents were 100%, 70%, 100%, 40% and 75%, respectively. With the high sensitivity and negative predictive value -reaching up to 100%- with dual source CT scanners, it could be used confidently to rule out in-stent re-stenosis. However, due to the frequent false positive results, careful patient selection should be done