Three-Dimensional Images of Coronary Arteries After Heart Transplantation Using Electron-Beam Computed Tomography Data With Volume Rendering
A57-year-old man received a heart transplant in 1989 and has had no evidence of rejection. He underwent both electron-beam computed tomography (EBCT; ImatronC-150XP, Imatron) and conventional coronary angiography as part of a post–heart transplant evaluation protocol. Conventional coronary angiograms revealed angiographically normal coronary arteries (Figure 1⇓). EBCT images were performed at a thickness of 1.5 mm, with a 100-ms scan time and intravenous administration of contrast medium. Axial images revealed normal coronary arterial lumina. EBCT provided data on the vessel lumen filled with contrast medium, the vessel wall, and the surrounding soft tissue. Volume render-ing showed the structure surrounding the lumen as well as the vessel lumen (Figure 2⇓). Images obtained by volume rendering are highly dependent on the shape of the lumen, opacity, color curves, and the quality of the image sources.1 The partial volume effect may also influence 3D data processing.2 The development of the EBCT scanner and reconstruction technique capability may allow the creation of images by 3D volume-rendering using EBCT data to noninvasively evaluate relevant intimal thickening of the coronary arteries after transplantation.
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/Texas Heart Institute, 6720 Bertner Ave, MC1-267, Houston, TX 77030.
- Copyright © 2001 by American Heart Association