Diagnostic usefulness and limitation of cardiac magnetic resonance for identifying myocardial damage in survivors of cardiac arrest in midtown

doi:10.4329/wjr.v17.i6.104473

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Jun 28, 2025 (publication date) through Mar 11, 2026

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World Journal of Radiology

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1949-8470

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Baishideng Publishing Group Inc, 7041 Koll Center Parkway, Suite 160, Pleasanton, CA 94566, USA

Retrospective Study

World J Radiol. Jun 28, 2025; 17(6): 104473
Published online Jun 28, 2025. doi: 10.4329/wjr.v17.i6.104473

Diagnostic usefulness and limitation of cardiac magnetic resonance for identifying myocardial damage in survivors of cardiac arrest in midtown

Yasuo Amano, Yasuyuki Suzuki, Kazuki Iso, Chisato Ando, Maki Amano

Yasuo Amano, Maki Amano, Department of Radiology, Nihon University Hospital, Tokyo 1018309, Japan

Yasuyuki Suzuki, Kazuki Iso, Department of Cardiology, Nihon University Hospital, Tokyo 1018309, Japan

Chisato Ando, Division of Radiological Technology, Nihon University Hospital, Tokyo 1018309, Japan

Author contributions: Amano Y conceived and designed the study; Amano Y, Suzuki Y, Iso K, Ando C collected and assembled the data; Amano Y, Suzuki Y and Amano M analyzed and interpreted the data. All authors have read and approved the final manuscript.

Institutional review board statement: The study was reviewed and approved by Nihon University Hospital (approval No. 20241101).

Informed consent statement: Patients gave informed consent before cardiac magnetic resonance and no additional consent was needed for this retrospective analysis.

Conflict-of-interest statement: The authors declare that they have no conflict of interest.

Data sharing statement: Patients gave informed consent before cardiac magnetic resonance and no additional consent was needed for this retrospective analysis.

Corresponding author: Yasuo Amano, MD, Department of Radiology, Nihon University Hospital, 1-6 Kanda-Surugadai, Chiyoda-ku, Tokyo 1018309, Japan. yas-amano@nifty.com

Received: December 23, 2024
Revised: March 24, 2025
Accepted: May 28, 2025
Published online: June 28, 2025
Processing time: 187 Days and 5.1 Hours

Abstract

BACKGROUND

Cardiac magnetic resonance (CMR) has been reported to identify myocardial damage inducing out-of-hospital cardiac arrest (OHCA). However, the usefulness of CMR may be affected by the medical institutions, patients’ ages, and myocardial diseases.

AIM

To clarify the clinical usefulness and limitation of CMR for identifying myocardial damage in the survivors of OHCA in midtown.

METHODS

Nineteen patients underwent CMR to detect myocardial damage related to OHCA in the midtown of a capital city. Cine, T1 and T2 mapping, T2-weighted, and late gadolinium enhancement (LGE) imaging were acquired using a 1.5 T scanner. We described the clinical characteristics of the survivors of OHCA and evaluated usefulness of CMR for identifying myocardial damage related to OHCA.

RESULTS

Among 19 patients experiencing OHCA, 7 experienced it in trains or on railway platforms, 4 while practicing sports, and 4 during their daily work. Ten of the 19 survivors were diagnosed with coronary vasospasm (CVS), in whom CMR failed to depict its characteristic findings. CMR was useful for identifying myocardial damage associated with hypertrophic cardiomyopathy (HCM) or myocardial infarction (MI). LGE was related to serious ventricular arrhythmias after implantable cardioverter defibrillator (ICD) installation in 3 patients (CVS, 2; HCM, 1).

CONCLUSION

CMR is useful for identifying myocardial damage of HCM or MI inducing OHCA and predicting ventricular arrhythmias after ICD implantation but has limited capability for detecting myocardial damage of CVS.

Keywords: Cardiac magnetic resonance; Late gadolinium enhancement; Cardiac arrest; Coronary vasospasm; Implantable cardioverter defibrillator

Core Tip: Cardiac magnetic resonance (CMR) may be useful for identifying the myocardial damage associated with hypertrophic cardiomyopathy or myocardial infarction and predicting ventricular arrhythmias after installation of implantable cardioverter defibrillator in the survivors of out-of-hospital cardiac arrest, whereas CMR has limited capability for detecting any findings characteristic of coronary vasospasm.