Arrhythmogenic right ventricular cardiomyopathy (ARVC) mimics: the knot unravelled by cardiovascular MRI

A M Amadu, A Baritussio, A G Dastidar, E De Garate, J C L Rodrigues, G Biglino, S Lyen, I Diab, E Duncan, Ashley M Nisbet, Glyn Thomas, G D Angelini, C Bucciarelli-Ducci*

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)

3 Citations (Scopus)
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Abstract

AIM: To assess the role of cardiovascular magnetic resonance imaging (CMRI) in patients referred for suspected arrhythmogenic right ventricular cardiomyopathy (ARVC), its ability to identify ARVC mimics, and subsequent clinical impact.

MATERIALS AND METHODS: The CMRI registry of the year 2014 was analysed to identify all consecutive patients referred for suspected ARVC. A comprehensive CMRI protocol that included anatomy, bi-ventricular function modules, and late gadolinium enhancement (LGE) was performed in all patients.

RESULTS: Out of 2,481 CMRI performed, 124 patients (5%) were referred for suspected ARVC. A pathological substrate was identified at CMRI in 36 patients (29%): five patients (4%) had ischaemic heart disease (IHD) and 10 (8%) non-IHD; five patients (4%) met CMRI criteria for ARVC and 16 (13%) were ARVC mimics. right ventricular end-diastolic volume (RVEDV) and right ventricular stroke volume (RVSV) were significantly higher in patients with ARVC mimics (RVEDV p=0.007, RVSV p=0.012) and ARVC (RVEDV p=0.013, RVSV p=0.013), as compared to those with structurally normal hearts. CMRI was superior to echocardiography in the identification of ARVC mimics (13% versus 1%, p=0.01).

CONCLUSIONS: CMRI was able to identify 16 (13%) ARVC mimics, from congenital abnormalities to acquired heart disease. CMRI was superior in identifying ARVC mimics compared to echocardiography, and overall provided a change in diagnosis in 22% of patients.

Original languageEnglish
Pages (from-to)228-234
Number of pages7
JournalClinical Radiology
Volume74
Issue number3
Early online date23 Jan 2019
DOIs
Publication statusPublished - Mar 2019

Structured keywords

  • Centre for Surgical Research

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  • Projects

    NIHR BRC Cardiovascular

    Angelini, G. D.

    1/04/1731/03/22

    Project: Research, Parent

    Cite this

    Amadu, A. M., Baritussio, A., Dastidar, A. G., De Garate, E., Rodrigues, J. C. L., Biglino, G., Lyen, S., Diab, I., Duncan, E., Nisbet, A. M., Thomas, G., Angelini, G. D., & Bucciarelli-Ducci, C. (2019). Arrhythmogenic right ventricular cardiomyopathy (ARVC) mimics: the knot unravelled by cardiovascular MRI. Clinical Radiology, 74(3), 228-234. https://doi.org/10.1016/j.crad.2018.12.002