RF heating of deep brain stimulation implants in open-bore vertical MRI systems: A simulation study with realistic device configurations.

Computer Simulation Deep Brain Stimulation Heating Humans Magnetic Resonance Imaging Phantoms, Imaging Prostheses and Implants Radio Waves
MR-guided neurosurgery MRI safety RF heating deep brain stimulation finite element method (FEM) interventional MRI medical implants open-bore MRI vertical MRI

Journal

Magnetic resonance in medicine
ISSN: 1522-2594
Titre abrégé: Magn Reson Med
Pays: United States
ID NLM: 8505245

Informations de publication

Date de publication:
06 2020
Historique:
received: 08 05 2019
revised: 02 10 2019
accepted: 03 10 2019
pubmed: 5 11 2019
medline: 15 5 2021
entrez: 3 11 2019
Statut: ppublish

Résumé

Patients with deep brain stimulation (DBS) implants benefit highly from MRI, however, access to MRI is restricted for these patients because of safety hazards associated with RF heating of the implant. To date, all MRI studies on RF heating of medical implants have been performed in horizontal closed-bore systems. Vertical MRI scanners have a fundamentally different distribution of electric and magnetic fields and are now available at 1.2T, capable of high-resolution structural and functional MRI. This work presents the first simulation study of RF heating of DBS implants in high-field vertical scanners. We performed finite element electromagnetic simulations to calculate specific absorption rate (SAR) at tips of DBS leads during MRI in a commercially available 1.2T vertical coil compared to a 1.5T horizontal scanner. Both isolated leads and fully implanted systems were included. We found 10- to 30-fold reduction in SAR implication at tips of isolated DBS leads, and up to 19-fold SAR reduction at tips of leads in fully implanted systems in vertical coils compared to horizontal birdcage coils. If confirmed in larger patient cohorts and verified experimentally, this result can open the door to plethora of structural and functional MRI applications to guide, interpret, and advance DBS therapy.

Identifiants

DOI: 10.1002/mrm.28049 PMID: 31677308 PMC: PMC7047541
pubmed: 31677308
doi: 10.1002/mrm.28049
pmc: PMC7047541
mid: NIHMS1054283
doi:

Types de publication

Journal Article Research Support, N.I.H., Extramural

Langues

eng

Sous-ensembles de citation

IM

Pagination

2284-2292

Subventions

Organisme : NIBIB NIH HHS
ID : R00 EB021320
Pays : United States
Organisme : NIBIB NIH HHS
ID : R03 EB024705
Pays : United States
Organisme : NIBIB NIH HHS
ID : R03 EB025344
Pays : United States

Informations de copyright

© 2019 International Society for Magnetic Resonance in Medicine.

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Auteurs

Laleh Golestanirad (L)

Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois.
Department of Biomedical Engineering, McCormick School of Engineering, Northwestern University, Evanston, Illinois.
ORCID: 0000-0003-3869-6114

Ehsan Kazemivalipour (E)

Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois.
Department of Electrical and Electronics Engineering, Bilkent University, Ankara, Turkey.
National Magnetic Resonance Research Center (UMRAM), Bilkent University, Ankara, Turkey.

David Lampman (D)

Hitachi Healthcare Americas, Twinsburg, Ohio.

Hideta Habara (H)

Hitachi, Ltd. Healthcare Business Unit, Tokyo, Japan.

Ergin Atalar (E)

Department of Electrical and Electronics Engineering, Bilkent University, Ankara, Turkey.
National Magnetic Resonance Research Center (UMRAM), Bilkent University, Ankara, Turkey.

Joshua Rosenow (J)

Department of Neurological Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois.

Julie Pilitsis (J)

Department of Neurosurgery, Albany Medical Center, Albany, New York.

John Kirsch (J)

A.A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Boston, Massachusetts.

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Classifications MeSH

questionsmedicales.fr › Sciences de l'information › Méthodologies informatiques › Simulation numérique › RF heating of deep brain stimulation implants...
questionsmedicales.fr › Procédures de chirurgie opératoire › Stimulation cérébrale profonde › RF heating of deep brain stimulation implants...
questionsmedicales.fr › Environnement et santé publique › Environnement › Environnement contrôlé › Chauffage › RF heating of deep brain stimulation implants...
questionsmedicales.fr › Eucaryotes › Animaux › Chordés › Vertébrés › Mammifères › Eutheria › Primates › Haplorhini › Catarrhini › Hominidae › Humains › RF heating of deep brain stimulation implants...
questionsmedicales.fr › Diagnostic › Techniques et procédures diagnostiques › Imagerie diagnostique › Tomographie › Imagerie par résonance magnétique › RF heating of deep brain stimulation implants...
questionsmedicales.fr › Équipement et fournitures › Fantômes en imagerie › RF heating of deep brain stimulation implants...
questionsmedicales.fr › Équipement et fournitures › Prothèses et implants › RF heating of deep brain stimulation implants...
questionsmedicales.fr › Phénomènes physiques › Rayonnement › Rayonnement non ionisant › Ondes hertziennes › RF heating of deep brain stimulation implants...