A selective short-axis method for cardiac MR imaging had an average accuracy of 90.9% in volunteers and 87.7% in patients, compared with 92.1% and 90.6% for a multisection approach.
Cross-Sectional (n=44)
Does a simple selective short-axis method maintain accuracy for positioning standard short-axis sections in cardiac MR imaging compared to a multisection approach in volunteers and patients with myocardial infarction?
A simple selective short-axis method for cardiac MR imaging provides high accuracy and reproducibility for positioning standard short-axis sections, comparable to a multisection approach.
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.
Messroghli et al. (Fri,) conducted a cross-sectional in Myocardial infarction (n=44). Selective short-axis method vs. Multisection approach was evaluated on Accuracy of section positioning among six criteria. A selective short-axis method for cardiac MR imaging had an average accuracy of 90.9% in volunteers and 87.7% in patients, compared with 92.1% and 90.6% for a multisection approach.