PMID- 34378816
OWN - NLM
STAT- MEDLINE
DCOM- 20220131
LR  - 20220131
IS  - 1522-2594 (Electronic)
IS  - 0740-3194 (Linking)
VI  - 87
IP  - 1
DP  - 2022 Jan
TI  - Magnetic resonance conditionality of abandoned leads from active implantable 
      medical devices at 1.5 T.
PG  - 394-408
LID - 10.1002/mrm.28967 [doi]
AB  - PURPOSE: During MR scans, abandoned leads from active implantable medical devices 
      (AIMDs) can experience excessive heating at the lead tip, depending on the type 
      of termination applied to the proximal contacts (proximal end treatment). The 
      influence of different proximal end treatments (ie, [1] freely exposed in the 
      tissue, [2] terminated with metal in contact with the tissue, or [3] capped with 
      plastic, and thereby fully insulated, on the RF-induced lead-tip heating) are 
      studied. A technique to ensure that MR Conditional AIMD leads remain MR 
      Conditional even when abandoned is recommended. METHODS: Abandoned leads from 
      three MR Conditional AIMDs ([1] a sacral neuromodulation system, [2] a cardiac 
      rhythm management pacemaker system, and [3] a deep brain stimulator system) were 
      investigated in this study. The computational lead models (ie, the transfer 
      functions) for different proximal end treatments were measured and used to assess 
      the in vivo lead-tip heating for four virtual human models (FATS, Duke, Ella, and 
      Billie) and compared with the lead-tip heating of the complete MR Conditional 
      AIMD system. RESULT: The average and maximum lead-tip heating for abandoned leads 
      proximally capped with metal is always lower than that from the complete AIMD 
      system. Abandoned leads proximally insulated could lead to an average in vivo 
      temperature rise up to 3.5 times higher than that from the complete AIMD system. 
      CONCLUSION: For the three investigated AIMDs under 1.5T MR scanning, our results 
      indicate that RF-induced lead-tip heating of abandoned leads strongly depends on 
      the proximal lead termination. A metallic cap applied to the proximal termination 
      of the tested leads could significantly reduce the RF-induced lead-tip heating.
CI  - (c) 2021 International Society for Magnetic Resonance in Medicine.
FAU - Wang, Yu
AU  - Wang Y
AUID- ORCID: 0000-0002-6974-5073
AD  - Department of Electrical and Computer Engineering, University of Houston, 
      Houston, Texas, USA.
FAU - Guo, Ran
AU  - Guo R
AD  - Department of Electrical and Computer Engineering, University of Houston, 
      Houston, Texas, USA.
FAU - Hu, Wei
AU  - Hu W
AD  - Department of Electrical and Computer Engineering, University of Houston, 
      Houston, Texas, USA.
FAU - Zheng, Jianfeng
AU  - Zheng J
AUID- ORCID: 0000-0001-8998-9561
AD  - Department of Electrical and Computer Engineering, University of Houston, 
      Houston, Texas, USA.
FAU - Wang, Qingyan
AU  - Wang Q
AD  - Department of Electrical and Computer Engineering, University of Houston, 
      Houston, Texas, USA.
FAU - Jiang, Jay
AU  - Jiang J
AD  - Axonics Modulation Technologies, Irvine, California, USA.
FAU - Kurpad, Krishna K N
AU  - Kurpad KKN
AD  - Micro Systems Engineering, Lake Oswego, Oregon, USA.
FAU - Kaula, Norbert
AU  - Kaula N
AD  - Cirtec Medical, Brooklyn Park, Minnesota, USA.
FAU - Long, Stuart
AU  - Long S
AD  - Department of Electrical and Computer Engineering, University of Houston, 
      Houston, Texas, USA.
FAU - Chen, Ji
AU  - Chen J
AUID- ORCID: 0000-0001-6944-2729
AD  - Department of Electrical and Computer Engineering, University of Houston, 
      Houston, Texas, USA.
FAU - Kainz, Wolfgang
AU  - Kainz W
AD  - Center for Devices and Radiological Health, Food and Drug Administration, Silver 
      Spring, Maryland, USA.
LA  - eng
PT  - Journal Article
DEP - 20210811
PL  - United States
TA  - Magn Reson Med
JT  - Magnetic resonance in medicine
JID - 8505245
SB  - IM
MH  - Heating
MH  - Humans
MH  - *Magnetic Resonance Imaging
MH  - Magnetic Resonance Spectroscopy
MH  - Phantoms, Imaging
MH  - *Prostheses and Implants/adverse effects
MH  - Radio Waves
OTO - NOTNLM
OT  - RF-induced heating
OT  - abandoned leads
OT  - active implantable medical devices (AIMDs)
OT  - magnetic resonance imaging (MRI)
OT  - transfer function (TF)
EDAT- 2021/08/12 06:00
MHDA- 2022/02/01 06:00
CRDT- 2021/08/11 09:09
PHST- 2021/06/26 00:00 [revised]
PHST- 2021/05/11 00:00 [received]
PHST- 2021/07/26 00:00 [accepted]
PHST- 2021/08/12 06:00 [pubmed]
PHST- 2022/02/01 06:00 [medline]
PHST- 2021/08/11 09:09 [entrez]
AID - 10.1002/mrm.28967 [doi]
PST - ppublish
SO  - Magn Reson Med. 2022 Jan;87(1):394-408. doi: 10.1002/mrm.28967. Epub 2021 Aug 11.