title: Magnetic resonance imaging in patients with a subcutaneous implantable cardioverter-defibrillator.
abstract: OBJECTIVE
  Our aim was to evaluate the potential for safely imaging patients with a new type of implantable cardioverter-defibrillator called the subcutaneous implantable cardioverter-defibrillator (S-ICD) in a 1.5 T magnetic resonance imaging (MRI) scanner. With the increasing number of patients with cardiac implantable devices who are indicated for MRI, there is a growing need for establishing MRI compatibility of cardiac implantable devices.
  
  
  RESULTS
  Patients with implanted S-ICD systems underwent one or more types of anatomical MRI scans. The S-ICD was programmed off and patients were monitored throughout the imaging procedure. Device function was evaluated pre- and post-scan. Patients were asked to report immediately any pain, torqueing movement, or heating sensation in the area of the pocket or electrode. Fifteen patients underwent a total of 22 examinations at 1.5 T. Scans included brain, spine, knee, and heart. Two patients were re-scanned due to complaints of heating over the can during lumbar scans, which was caused by a thermistor probe placed on the skin to measure skin temperature. All the remaining scans occurred without incident. No evidence of device malfunction was observed.
  
  
  CONCLUSIONS
  This study is the first to domonstrate the feasibility of exposing S-ICD patients to MRI using the scanning and monitoring protocol described. More data are required to support S-ICD as a MRI conditional device.
authors: Department of Radiology, Homolka Hospital, Prague, Czech Republic Department of Neurology, Third faculty of Medicine, Charles University in Prague.
authors: Jirí
authors: J
authors: Keller
authors: Department of Cardiology, Homolka Hospital (Na Homolce Hospital), Prague, Roentgenova 2, Praha 5, 150 30 Prague, Czech Republic petr.neuzil@gmail.com.
authors: Petr
authors: P
authors: Neužil
authors: Department of Radiology, Homolka Hospital, Prague, Czech Republic.
authors: Josef
authors: J
authors: Vymazal
authors: Department of Cardiology, Homolka Hospital (Na Homolce Hospital), Prague, Roentgenova 2, Praha 5, 150 30 Prague, Czech Republic.
authors: Marek
authors: M
authors: Janotka
authors: Department of Cardiology, Homolka Hospital (Na Homolce Hospital), Prague, Roentgenova 2, Praha 5, 150 30 Prague, Czech Republic.
authors: Jirí
authors: J
authors: Brada
authors: Department of Radiology, Homolka Hospital, Prague, Czech Republic.
authors: Radovan
authors: R
authors: Žáček
authors: Department of Cardiology, Homolka Hospital (Na Homolce Hospital), Prague, Roentgenova 2, Praha 5, 150 30 Prague, Czech Republic.
authors: Roman
authors: R
authors: Vopálka
authors: Department of Radiology, Homolka Hospital, Prague, Czech Republic.
authors: Jirí
authors: J
authors: Weichet
authors: Department of Cardiology, Homolka Hospital (Na Homolce Hospital), Prague, Roentgenova 2, Praha 5, 150 30 Prague, Czech Republic Cardiac Arrhythmia Service, Mount Sinai Hospital, New York City, NY, USA.
authors: Vivek Y
authors: VY
authors: Reddy
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D016477:Artifacts; D017147:Defibrillators, Implantable / Q000009:adverse effects; D004554:Electric Countershock / Q000009:adverse effects / Q000295:instrumentation*; D005240:Feasibility Studies; D005260:Female; D006358:Hot Temperature / Q000009:adverse effects; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000009:adverse effects; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012307:Risk Factors; D055815:Young Adult
keywords: Implantable defibrillator; Magnetic resonance imaging; Subcutaneous S-ICD