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Cardiac Imaging |
1 From the Department of Radiology, University Hospital Graz, Auenbruggerplatz 9, A-8036 Graz, Austria. Received April 14, 1998; revision requested May 29; final revision received October 30; accepted February 12, 1999. Address reprint requests to R.G.
PURPOSE: To evaluate the appearance of the pericardial sinuses and recesses at electrocardiographically triggered electron-beam computed tomography (CT).
MATERIALS AND METHODS: Findings in 100 patients without known pericardial disease were reviewed. The patients underwent electron-beam CT of the heart because of suspected coronary arterial disease. Incremental electrocardiographically triggered images were obtained with a 100-msec exposure time and 1.5-mm section thickness after intravenous administration of contrast material. The appearance of the pericardial sinuses and recesses was determined.
RESULTS: In each patient, at least one of the sinuses was visible at CT. The transverse and oblique sinuses (or one of their recesses) were depicted in 95 and 89 patients, respectively. The left pulmonic recess was depicted in 81 patients; inferior aortic recess, 80 patients; posterior pericardial recess, 67 patients; left pulmonic vein recess, 60 patients; right pulmonic recess, 51 patients; superior aortic recess, 47 patients; right pulmonic vein recess, 29 patients; and postcaval recess, 23 patients.
CONCLUSION: Pericardial sinuses and recesses are frequently depicted on electrocardiographically triggered electron-beam CT images. Knowledge of their locations is helpful in the differentiation of normal pericardium from pericardial effusions and mediastinal processes such as lymph nodes.
Index terms: Computed tomography (CT), electron beam, 51.12112, 51.12114, 51.12118, 55.12112, 55.12114, 55.12118 • Heart, anatomy, 51.92 • Heart, CT, 51.12112, 51.12114, 55.12112, 55.12114 • Pericardium • Pericardium, CT, 55.12112, 55.12114, 55.12118, 55.92
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