Purpose: The aim of this study was to systematically investigate the potential heating effects of magnetic resonance imaging (MRI) in the presence of epicardial leads, which are connected to a device or abandoned, using a series of in vitro measurements.
Methods: The heating effects of MRI in a 1.5-T scanner were measured at the lead tip in a gel-filled tank. First, a transvenous lead (5086-45 cm, Medtronic) was compared with an epicardial lead (4968-35 cm, Medtronic) with and without connection to an MR-conditional pacemaker. Then, experiments were conducted using various lengths of epicardial leads exposed to MRI.
Results: (1) A temperature rise of + 2.5 °C was observed for the transvenous lead attached to an MRI-conditional pacemaker. The epicardial lead attached to the same pacemaker showed four times higher heating. (2) The transvenous lead without pacemaker showed four times higher heating, and the epicardial lead without pacemaker showed 30 times higher heating. (3) The epicardial lead coiled to 20 cm length without pacemaker showed 9 times higher heating. (4) Experiments with various lengths of epicardial leads showed that the shorter the leads were, the smaller was the heating effect.
Conclusion: Standard clinical MRI investigations may result in pronounced heating at the tip of epicardial electrodes. Epicardial leads, which are not connected to a pacemaker and thus mimicking abandoned leads, may even result in a more pronounced rise in temperature at the lead tip. Therefore, current epicardial pacing systems may carry a substantial risk of inducing thermal damage of the neighboring tissue during MRI scanning.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/s10840-019-00627-7 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Myocarditis as a Possible Underlying Cause for Mid-Ventricular Takotsubo Cardiomyopathy: A Case Report.
Cureus
December 2024
Medicine, Florida International University, Herbert Wertheim College of Medicine, Miami, USA.
Our case report characterizes a rare presentation of mid-ventricular Takotsubo cardiomyopathy (TTC) in a patient with suspected myocarditis as an underlying cause. Mid-ventricular TTC is a rare variant of TTC presenting with overlapping symptoms and physical exam findings of acute coronary syndrome, which often leads to misdiagnosis as myocardial infarction. Our case is of a 77-year-old female patient with a history of hyperlipidemia, right breast ductal carcinoma in situ, and diverticular disease who presented to the emergency department for evaluation of chest pain radiating to the jaw with associated nausea and vomiting.
View Article and Find Full Text PDFCardiac strangulation with chronic ab-extrinseco occlusion of the left-circumflex artery from an epicardial lead: a case report.
Eur Heart J Case Rep
January 2025
Department of Radiological and Hematological Sciences, Section of Radiology, Università Cattolica del Sacro Cuore, Largo Agostino Gemelli 8 - 00168 Rome, Italy.
Background: Cardiac strangulation (CS) from epicardial pacing leads (EPLs) is a rare and potentially lethal mechanical complication associated with epicardial pacemaker (PM) implantation.
Case Summary: We report a case of a 44-year-old-female patient presenting with chest and left shoulder pain in the absence of reported trauma with history of congenital atrioventricular block treated with epicardial PM implantation during the childhood and subsequent transvenous reimplantation over the years. Troponin I resulted within normal values and ECG, transthoracic echocardiography and chest X-ray documented no acute cardiopulmonary findings.
PET/CT with Myocardial Blood Flow Assessment Is Prognostic of Cardiac Allograft Vasculopathy Progression and Clinical Outcomes.
J Nucl Med
January 2025
Milstein Division of Cardiology, Department of Medicine, Columbia University Irving Medical Center, NewYork-Presbyterian Hospital, New York, New York;
Cardiac allograft vasculopathy (CAV) causes impaired blood flow in both epicardial vessels and microvasculature and remains a leading cause of posttransplant morbidity and mortality. This study examined the prognostic value and outcomes of CAV, assessed by N-ammonia PET/CT myocardial perfusion imaging in heart transplant recipients. PET/CT and invasive coronary angiography (ICA) were graded using validated scales.
View Article and Find Full Text PDFCardiac strangulation by epicardial pacing wires in adults.
Herzschrittmacherther Elektrophysiol
January 2025
Klinik für Innere Medizin-Kardiologie, Diabetologie und Nephrologie, Evangelisches Klinikum Bethel, Universitätsklinikum OWL der Universität Bielefeld, Campus Bielefeld-Bethel, Burgsteig 13, 33617, Bielefeld, Germany.
Like children, adult patients with active or abandoned epicardial pacing leads are also at risk of developing life-threatening cardiac ischemia due to mechanical compression of the coronary arteries. As this complication is amenable to surgical removal, these patients require periodic evaluation for myocardial ischemia even if they are asymptomatic.
View Article and Find Full Text PDFMineral composition and ratios in aortic valves, serum, and epicardial fat among patients with aortic stenosis undergoing aortic valve replacement.
Sci Rep
January 2025
Department of Environmental Medicine, Poznan University of Medical Sciences, Poznan, Poland.
Aortic stenosis (AS) is a leading cause of surgical intervention in adults with acquired heart disease, driven by an aging population and advancements in diagnostic and treatment approaches. This study aimed to investigate levels of macroelements (Ca, K, Na, Mg, and P) in aortic valve tissues, serum, and epicardial fat in patients undergoing aortic valve replacement due to degenerative disease. Elemental composition was determined using inductively coupled plasma mass spectrometry.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!