PMID- 31321466
OWN - NLM
STAT- MEDLINE
DCOM- 20191219
LR  - 20200124
IS  - 1432-2102 (Electronic)
IS  - 0033-832X (Linking)
VI  - 59
IP  - Suppl 1
DP  - 2019 Dec
TI  - MR safety assessment of active implantable medical devices.
PG  - 40-45
LID - 10.1007/s00117-019-0541-6 [doi]
AB  - BACKGROUND: Increasing numbers of patients with active implantable medical 
      devices (AIMDs) require magnetic resonance (MR) examinations. The manufacturers 
      are continuing to improve the MR compatibility of their AIMDs. To this end, 
      a variety of measurement methods and numerical simulations are used to evaluate 
      the risks associated with magnetic resonance imaging (MRI). OBJECTIVE: In this 
      article, test methods used to investigate interactions between AIMDs with radio 
      frequency fields and time-varying magnetic gradient fields are reviewed. 
      MATERIALS AND METHODS: A literature review of known test methods for radio 
      frequency and gradient field exposure of AIMDs with leads, in particular for 
      neurostimulators, cochlear implants, and implanted infusion pumps, is presented. 
      The state of the art and promising methods are discussed. RESULTS: ISO/TS 10974 
      describes the design of high frequency and gradient injection setups to test 
      conductive materials. A large number of sensor designs have been published to 
      measure the induced voltages and currents through radio frequency and gradient 
      fields and for monitoring AIMDs during MR examinations in in vitro tests. 
      CONCLUSION: The test methods should be planned to be as conservative as possible 
      to cover the worst case scenario. However, in vitro measurements and computer 
      simulation are far from being able to cover all possible configurations in their 
      complexity and uniqueness. For safer MR examinations, current research recommends 
      in vivo testing prior to MR, parallel radiofrequency transmission techniques, and 
      new sequences with reduced energy input in the presence of AIMDs.
FAU - Aissani, Sarra
AU  - Aissani S
AD  - IADI, U1254, INSERM, Universite de Lorraine, CHRU de Nancy Brabois, Batiment 
      Recherche (anciennement EFS), Rez-de-Chausse, Rue du Morvan, 54511, Nancy, 
      France.
FAU - Laistler, Elmar
AU  - Laistler E
AD  - Center for Medical Physics and Biomedical Engineering, Medical University of 
      Vienna, Vienna, Austria.
AD  - MR Centre of Excellence, Medical University of Vienna, Vienna, Austria.
FAU - Felblinger, Jacques
AU  - Felblinger J
AD  - IADI, U1254, INSERM, Universite de Lorraine, CHRU de Nancy Brabois, Batiment 
      Recherche (anciennement EFS), Rez-de-Chausse, Rue du Morvan, 54511, Nancy, 
      France. j.felblinger@chru-nancy.fr.
AD  - CIC 1433 Innovation Technologique, INSERM, CHRU Nancy Brabois, Nancy, France. 
      j.felblinger@chru-nancy.fr.
LA  - eng
PT  - Journal Article
PT  - Review
TT  - MR-Sicherheitsbewertung von aktiven implantierbaren medizinischen Geraten. 
      Englische Version.
PL  - Germany
TA  - Radiologe
JT  - Der Radiologe
JID - 0401257
SB  - IM
MH  - Cochlear Implants
MH  - Computer Simulation
MH  - Humans
MH  - Magnetic Fields
MH  - Magnetic Resonance Imaging/*methods
MH  - Pacemaker, Artificial
MH  - Patient Safety
MH  - *Prostheses and Implants
MH  - Radio Waves
MH  - Signal Processing, Computer-Assisted
OTO - NOTNLM
OT  - Compatibility
OT  - Heating
OT  - Magnetic resonance imaging
OT  - Malfunction
OT  - Rectification
EDAT- 2019/07/20 06:00
MHDA- 2019/12/20 06:00
CRDT- 2019/07/20 06:00
PHST- 2019/07/20 06:00 [pubmed]
PHST- 2019/12/20 06:00 [medline]
PHST- 2019/07/20 06:00 [entrez]
AID - 10.1007/s00117-019-0541-6 [pii]
AID - 10.1007/s00117-019-0541-6 [doi]
PST - ppublish
SO  - Radiologe. 2019 Dec;59(Suppl 1):40-45. doi: 10.1007/s00117-019-0541-6.