Postoperative MRI examinations in patients treated by deep brain stimulation using a non-standard protocol

Acta neurochirurgica
Lutz M WeiseKarl T Hoffmann

Abstract

MRI in patients bearing deep brain stimulation (DBS) electrodes may induce cerebral lesions due to electrode heating. To avoid neurological deficits related to MRI, post-operative MRI protocol was installed in our institution. However, our protocol comprised a higher specific absorption rate (SAR) and different positioning of lead excess than the later released electrode manufacturer's guidelines. The objective was to evaluate the safety using this protocol. Between January 2000 and May 2008, post-operative MRI was performed in all patients. In selected patients, additional MRI scans were performed with the implanted generator. MRI was acquired at 1.5 T with a RF transmit/receive head coil comprising a T2-weighted fast spin echo (FSE) and a T1-weighted inversion recovery FSE sequence. Local cranial SAR values measured up to 0.9 W/kg compared to the manufacturer's recommendation of 0.1 W/kg. Initial scans (1-7 days after surgery) were performed with externalized leads, long-term scans (>30 days after surgery) with a connected generator. New neurological deficits were assessed before and after MRI. Additional MRIs were compared to the initial postoperative MRI with emphasis on new lesions. In 211 patients, 243 MRIs were performed...Continue Reading

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Citations

Feb 5, 2014·Acta neurochirurgica·Sebastian AntesJoachim Oertel
Feb 22, 2012·Acta neurochirurgica·Lutz WeiseM Setzer
Jul 16, 2013·Acta neurochirurgica·Edvin ZekajDomenico Servello
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Sep 26, 2014·Journal of Neurology, Neurosurgery, and Psychiatry·Thomas SchöneckerAndreas R Kupsch
Jul 20, 2016·European Journal of Paediatric Neurology : EJPN : Official Journal of the European Paediatric Neurology Society·John S Thornton
Mar 8, 2018·Journal of Neural Engineering·Johannes B ErhardtJan G Korvink
May 16, 2017·Movement Disorders : Official Journal of the Movement Disorder Society·Greydon GilmoreMandar Jog
Aug 17, 2021·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Berk SilemekLukas Winter

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