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. 2012 Aug 10;30(23):2876-84.
doi: 10.1200/JCO.2011.40.3584. Epub 2012 Jul 16.

Screening adult survivors of childhood cancer for cardiomyopathy: comparison of echocardiography and cardiac magnetic resonance imaging

Gregory T Armstrong  1 , Juan Carlos Plana, Nan Zhang, Deokumar Srivastava, Daniel M Green, Kirsten K Ness, F Daniel Donovan, Monika L Metzger, Alejandro Arevalo, Jean-Bernard Durand, Vijaya Joshi, Melissa M Hudson, Leslie L Robison, Scott D Flamm
Affiliations

Screening adult survivors of childhood cancer for cardiomyopathy: comparison of echocardiography and cardiac magnetic resonance imaging

Gregory T Armstrong et al. J Clin Oncol. .

Abstract

Purpose: To compare two-dimensional (2D) echocardiography, the current method of screening for treatment-related cardiomyopathy recommended by the Children's Oncology Group Guidelines, to cardiac magnetic resonance (CMR) imaging, the reference standard for left ventricular (LV) function.

Patients and methods: Cross-sectional, contemporaneous evaluation of LV structure and function by 2D and three-dimensional (3D) echocardiography and CMR imaging in 114 adult survivors of childhood cancer currently median age 39 years (range, 22 to 53 years) exposed to anthracycline chemotherapy and/or chest-directed radiation therapy.

Results: In this survivor population, 14% (n = 16) had an ejection fraction (EF) less than 50% by CMR. Survivors previously undiagnosed with cardiotoxicity (n = 108) had a high prevalence of EF (32%) and cardiac mass (48%) that were more than two standard deviations below the mean of normative CMR data. 2D echocardiography overestimated the mean EF of this population by 5%. Compared with CMR, 2D echocardiography (biplane method) had a sensitivity of 25% and a false-negative rate of 75% for detection of EF less than 50%, although 3D echocardiography had 53% and 47%, respectively. Twelve survivors (11%) had an EF less than 50% by CMR but were misclassified as ≥ 50% (range, 50% to 68%) by 2D echocardiography (biplane method). Detection of cardiomyopathy was improved (sensitivity, 75%) by using a higher 2D echocardiography cutoff (EF < 60%) to detect an EF less than 50% by the reference standard CMR.

Conclusion: CMR identified a high prevalence of cardiomyopathy among adult survivors previously undiagnosed with cardiac disease. 2D echocardiography demonstrated limited screening performance. In this high-risk population, survivors with an EF 50% to 59% by 2D echocardiography should be considered for comprehensive cardiac assessment, which may include CMR.

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Conflict of interest statement

Authors' disclosures of potential conflicts of interest and author contributions are found at the end of this article.

Figures

Fig 1.
Fig 1.
Study recruitment flow diagram. CMR, cardiac magnetic resonance imaging; RT, radiotherapy; SJLIFE, St Jude Lifetime Cohort Study.
Fig 2.
Fig 2.
Bland-Altman plots for agreement of cardiac magnetic resonance imaging (MRI) with (A) three-dimensional (3D) echocardiography (ECHO), (B) two-dimensional (2D) biplane echocardiography, (C) 2D apical 4-chamber (A4C), and (D) Teichholz method for assessment of ejection fraction (EF). SD, standard deviation.
Fig 3.
Fig 3.
Scatter plots identifying survivors with an ejection fraction by cardiac magnetic resonance imaging (MRI) of less than 50% but ≥ 50% (gray box) by echocardiography (ECHO) for (A) three-dimensional (3D) echocardiography, (B) two-dimensional (2D) biplane, (C) 2D apical 4-chamber (A4C), and (D) 2D Teichholz method.
See this image and copyright information in PMC

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