Coronary CT Angiography and Incidental Pulmonary Nodules
Incidental findings are an important topic in diagnostic imaging. Because of the comprehensive nature of computed tomography (CT) scanning, incidental findings are found seemingly on almost every CT scan performed for a wide variety of reasons in a radiology department. Many of these incidental findings are benign and immediately dismissed, such as a liver cyst. Other findings require more extensive interpretation and management. In regards to coronary CT angiography, a similar problem exists. Even though we have a primary interest in the heart, the CT scanner delivers radiation to all tissues of the chest, such as the bones, lung parenchyma and breast tissue. Extracardiac findings are reported to occur in 15% to 67% of CCTA examinations1 and the vast majority (about 80%) represents pulmonary nodules.
- Received July 6, 2014.
- Accepted July 7, 2014.