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Cardiac magnetic resonance image quality is surprisingly good in the obese: a study of 2759 consecutive subjects
© Chen et al; licensee BioMed Central Ltd. 2010
Published: 21 January 2010
The European CMR Registry documented in 11, 040 patients that CMR has diagnostic quality in 98% of patients and impacts patient management in a significant number of subjects (Bruder et al., in press). Image quality is compromised by patient obesity in most forms of noninvasive cardiac imaging (echocardiography, CT, or nuclear techniques), but the effect of obesity on CMR image quality has not been characterized. Wide bore MRI systems provide new capabilities for imaging large patients.
To examine the relationship between CMR image quality and patient body size from a wide bore MRI scanner.
Cine MRI and delayed enhancement (DE) image quality was reviewed for patients imaged on a wide-bore Siemens Magnetom Espree 1.5 T MRI scanner at the NIH-Suburban Hospital MRI Center. The primary study endpoint was the number of studies considered excellent or good vs. fair, poor, or non-diagnostic quality as a function of body mass index (BMI). Secondary endpoints were similar analyses in males vs. females, and subjects with normal vs. decreased LVEF. The data was analyzed using Pearson chi-square testing.
CMR image quality is not compromised in large subjects imaged with a wide-bore cardiac capable MRI scanner. Reduced image quality in patients with lower LVEF likely relates to the compromised breath-holding abilities of patients in heart failure and arrhythmias. Thus, obesity should not be a reason not to consider CMR if appropriate equipment and expertise are available.
This article is published under license to BioMed Central Ltd.