Parametric mapping by cardiovascular magnetic resonance imaging in sudden cardiac arrest survivors

Etiology of sudden cardiac arrest (SCA) is identified in less than 30% of survivors without coronary artery disease. We sought to assess the diagnostic role of myocardial parametric mapping using cardiovascular magnetic resonance (CMR) in identifying SCA etiology. Consecutive SCA survivors undergoin...

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Bibliographic Details
Published in:The international journal of cardiovascular imaging 2023-08, Vol.39 (8), p.1547-1555
Main Authors: Gil, Katarzyna E., Truong, Vien T., Zareba, Karolina M., Varghese, Juliet, Simonetti, Orlando P., Rajpal, Saurabh
Format: Article
Language:English
Subjects:
Cardiac arrest
Cardiac Imaging
Cardiology
Cardiomyopathy
Cardiovascular disease
Coronary artery disease
Diagnosis
Diagnostic systems
Etiology
Heart diseases
Imaging
Lifesaving
Magnetic resonance imaging
Mapping
Medical imaging
Medicine
Medicine & Public Health
Myocarditis
Original Paper
Radiology
Survival
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Description
Summary:Etiology of sudden cardiac arrest (SCA) is identified in less than 30% of survivors without coronary artery disease. We sought to assess the diagnostic role of myocardial parametric mapping using cardiovascular magnetic resonance (CMR) in identifying SCA etiology. Consecutive SCA survivors undergoing CMR with myocardial parametric mapping were included in the study. The determination if CMR was decisive or contributory in identifying SCA etiology was made if the diagnosis was unclear prior to CMR, and the discharge diagnosis was consistent with the CMR result. Parametric mapping was considered essential for establishing probable SCA etiology by CMR if the SCA cause could not have been determined without its utilization. If the CMR diagnosis could have been potentially based on the combination of cine and LGE imaging, parametric mapping was considered contributory. Of the 35 patients (mean age 46.9 ± 14.1 years; 57% males) included, SCA diagnosis was based on CMR in 23 (66%) patients. Of those, parametric mapping was essential for the diagnosis of myocarditis and tako-tsubo cardiomyopathy (11/48%) and contributed to the diagnosis in 10 (43%) additional cases. Inclusion of quantitative T1 and T2 parametric mapping in the SCA CMR protocol has the potential to increase diagnostic yield of CMR and further specify SCA etiology, especially myocarditis.
ISSN:1875-8312
1569-5794
1875-8312
1573-0743
DOI:10.1007/s10554-023-02864-4