Left Ventricular Thrombus Detected by Two- and Three-Dimensional Computed Tomographic Ventriculography
A New Application of Helical CT
A67-year-old man presented with chest discomfort. At the age of 65 years, he had been hospitalized because of acute anteroseptal myocardial infarction. Coronary angiography and LVG were performed to evaluate his present status. The LVG revealed LV aneurysm. An LV thrombus at the apex was suspected (Figure⇓, A). By use of a new application of helical CT with contrast enhancement, ie, CT-VG, an LV aneurysm and the apical thrombus were demonstrated by both 2D and 3D CT-VG (Figure⇓, B and C). In addition, the 2D CT-VG depicted markedly thinned anteroseptal wall.
CT-VG is a new application of helical CT, which can assess heart function such as wall motion and systolic thickening in any direction (2D and 3D + cine movie) as well as clear morphological information. The 50-rotation raw data were acquired with a single-breath-hold helical CT. Approximately 500 transaxial slices were obtained from the raw data with 0.1 pitch overlapping reconstruction (3 mm thick, 0.08 second, and 0.2-mm slice per frame interval). All 500 transaxial slices, which included different cardiac phases, were reordered to separate different cardiac cycles (end-diastolic, end-systolic, and others) and stored in new files. The separated new files were reformatted to 2D and 3D images.
Selected Abbreviations and Acronyms
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 Dr Hugh A. McAllister, Jr, St Luke’s Episcopal Hospital and Texas Heart Institute, 6720 Bertner Ave, MC1–267, Houston, TX 77030.
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