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Assessment of Regional Left Ventricular Function: Accuracy and Reproducibility of Positioning Standard Short-Axis Sections in Cardiac MR Imaging¹

¹ From the British Heart Foundation Cardiac MRI Unit (D.R.M., G.J.B., K.A., T.R.J., S.P., M.U.S.) and Department of Medical Physics (J.P.R.), Leeds General Infirmary, Leeds, England. Received February 9, 2004; revision requested April 20; revision received May 10; accepted June 15. D.R.M. supported by a Marie Curie research grant from the European Commission. Address correspondence to D.R.M., Cardiac MRI Team, Franz-Volhard-Klinik, Humboldt Universität, Charité Campus Buch, Wiltbergstrasse 50, 13125 Berlin, Germany (e-mail: messroghli@fvk-berlin.de).

The assessment of regional left ventricular (LV) function with cardiac magnetic resonance (MR) cine techniques requires a standardized section positioning. A simple selective short-axis method for selective positioning of three short-axis sections (basal, midcavity, apical) was tested for its accuracy, compared with accepted criteria, in 21 volunteers (mean age, 32 years ± 11) and in 23 patients with myocardial infarction (mean age, 56 years ± 12). Reproducibility of section positioning and of regional LV parameters was tested in the volunteers. Among the six accuracy criteria defined for standard sections, the selective short-axis approach had an average accuracy of 90.9% in volunteers and 87.7% in patients, compared with 92.1% and 90.6%, respectively, for a multisection approach covering the whole LV. There was very good reproducibility of the selected intersection gap (r = 0.89, P < .001) and of measured midcavity end-diastolic diameters in vertical (r = 0.83, P < .001) and horizontal (r = 0.85, P < .001) long-axis orientations. The proposed method produces standardized short-axis section positions that meet the recommendations for cardiac imaging. The study was approved by the local ethics committee, and all subjects gave written informed consent.

© RSNA, 2005

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