Noninvasive Angiography

Electron-beam angiography (EBA) is a technology with the potential for obtaining essentially noninvasive coronary arteriograms. This procedure requires intravenous contrast to opacify the lumen and is completed within 20-30 minutes. Recent studies have reported this modality could be used to identify significant coronary lumen narrowing (>50% stenosis) with a sensitiivty of 92% and specificity of 94% as compared to invasive coronary angiography. Selective use of EBA might prove cost effective and provide a safer, less invasive method to assess luminal stenosis.

EBA in patients post-CABG or post-stent demonstrated sensitivities of 92100% and specificities of 91%-100% for establishing patency as compared to conventional coronary angiography (Fig. 2.3).

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