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Ann Thorac Surg 2005;79:1344-1351
© 2005 The Society of Thoracic Surgeons

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Original articles: Cardiovascular

Multislice Computed Tomography for Preoperative Evaluation of Right Ventricular Volumes and Function: Comparison With Magnetic Resonance Imaging

^a Department of Radiology, Berlin, Germany
^b Department of Cardiovascular Surgery, Charité University Medicine Berlin, Medical School of Free University and Humboldt University, Berlin, Germany
^c Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts

Accepted for publication September 7, 2004.

^_* Address reprint requests to Dr Lembcke, Department of Radiology, Massachusetts General Hospital, 55 Fruit St, White Building, Room 270, Boston, MA 02114 (E-mail: alexander.lembcke{at}gmx.de).

BACKGROUND: This study was performed to validate preoperative right ventricular measurements obtained from multislice spiral computed tomography data sets in comparison with magnetic resonance imaging.

METHODS: Before cardiac surgery, 25 patients (among them 12 patients with compromised right ventricular function) underwent contrast-enhanced retrospectively electrocardiogram-gated multislice spiral computed tomography and cine magnetic resonance imaging in a standardized fashion. Right ventricular end-diastolic, end-systolic and stroke volume, ejection fraction, and myocardial mass were calculated according to the slice summation method. Measurements obtained with both modalities were compared using Pearson's correlation coefficient (r), Student's t test for paired samples, and Bland-Altman analysis.

RESULTS: The right ventricle was completely visualized with invariably adequate image quality on all multislice spiral computed tomography and magnetic resonance images. For all measurements a close correlation between multislice spiral computed tomography and magnetic resonance imaging was found (end-diastolic volume, r = 0.93; end-systolic volume, r = 0.95; stroke volume, r = 0.91; ejection fraction, r = 0.96; mass, r = 0.94). Mean values of all measurements did not differ significantly between both modalities, and limits of agreement were in an acceptable range.

CONCLUSIONS: When compared with magnetic resonance imaging as a reference method, multislice spiral computed tomography seems to be an accurate and reliable noninvasive technique for evaluating right ventricular measurements.

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