Differential Color Imaging Technique of Helical CT Angiography in the Diagnosis of Total Anomalous Pulmonary Venous Drainage
Three-dimensional images obtained by helical CT are very informative for the diagnosis of various kinds of cardiovascular diseases. However, it is sometimes difficult to recognize spatial relationships of arteries, veins, tracheae, and bronchi in some complicated congenital heart diseases, such as total anomalous pulmonary venous drainage (TAPVD), major aortopulmonary collateral arteries, vascular rings, etc. Because the spatial information is essential for successful surgical intervention, we have developed a differential 3D color imaging technique that uses helical CT angiography. After arteries and veins had been determined by the shape, continuity, and CT density on sequential CT images, each area of interest was determined. 3D images of each component were reconstructed with an image analyzer and were displayed in red and blue for arteries and veins, respectively. This method is noninvasive and very useful, especially for the diagnosis of TAPVD, in which anomalous tortuous pulmonary trunks sometimes pass between the pulmonary arteries, the bronchial components, and the diaphragm, with narrowing.
The editor of Images in Cardiovascular Medicine is Hugh A. McAllister, Jr, MD, Chief, Department of Pathology, St Luke’s Episcopal Hospital and Texas Heart Institute, and Clinical Professor of Pathology, University of Texas Medical School and Baylor College of Medicine.
Circulation encourages readers to submit cardiovascular images to the Circulation Editorial Office, St Luke’s Episcopal Hospital and Texas Heart Institute, 6720 Bertner Ave, MC1-267, Houston, TX 77030.
- Copyright © 2000 by American Heart Association