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Feasibility of MRI in Patients with Non-Pacemaker/Defibrillator Metallic devices and Abandoned Leads

Journal of Biomedical Science and Engineering 2021年第3期14卷 83-93页

作者： Prabhakaran P. Gopalakrishnan Loretta Gevenosky Robert W. W. Biederman Division of Cardiology Aultman Deuble Heart and Vascular Hospital Canton OH USA Cardiovascular MRI Center Allegheny Health Network Cardiovascular Institute Pittsburgh PA USA

Objective: To evaluate feasibility of MRI in patients with non-pacemaker (PM)/Implantable cardioverter defibrillator (ICD) metallic devices and abandoned leads. Background: Relative safety of MRI performed using specified protocol has been established in MR non-conditional PM/ICDs. With limited safety data, many non-PM/ICD metallic devices and abandoned leads continue to be a contraindication for MRI. Methods: We retrospectively analyzed consecutive patients with extra-cardiac devices, non-programmable cardiac devices, and abandoned leads, who underwent MRI (GE 1.5 Tesla, WI) at a single tertiary care center over a span of 13 years. Scan protocol was designed to maintain specific absorption rate (SAR) Results: The cohort comprised 127 MRI exams representing 94 patients, with 13 patients having two or more scans. The devices consisted of: 23 vagal nerve stimulators (VNS), 22 implantable loop recorders, 16 spinal stimulators, 5 peripheral nerve stimulators, 3 bladder stimulators, 2 deep brain stimulators, 1 gastric stimulator, 1 bone stimulator, 1 WATCHMAN device, 22 abandoned PM/lCD leads and 1 VNS lead. There was no immediate (peri-MRI exam) morbidity or mortality. Patients did not report any discomfort, palpitations, heating, or sensation of device migration during the exam. Local follow-up data was available in 65% (100% for thoracic imaging) with a mean of 190 ± 475 days (median 13 days). No device malfunction was reported during follow-up. Conclusions: With appropriate precautions, MRI is feasible in patients with extracardiac devices, nonprogrammable cardiac devices, and abandoned leads.

关键词： MRI Safety Pacemaker Abandoned Leads Implantable Loop Recorder extra-cardiac devices

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