Computed tomography-coronary angiography in the detection of coronary artery disease

Computed tomography-coronary angiography (CT-CA) is a well-tolerated and reliable non-invasive imaging technique and can now be achieved at low levels of radiation exposure. CT-CA is highly valuable to exclude coronary artery disease, but due to over- and underestimation of the severity of coronary lesions, CT-CA cannot replace invasive coronary angiography. Coronary calcium scoring has an incremental independent prognostic value beyond traditional risk factor scores (Framingham, European Score) and may be useful to reclassify risk in asymptomatic individuals at intermediate risk. Appropriate indications for CT-CA are evolving, but studies are lacking to demonstrate that CT coronary imaging improves patient outcome.

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