Cerebral Tissue Contrast is Mostly Preserved in Low SAR Inversion Recovery MRI for Parkinsons Patients with Deep Brain Stimulators
Subhendra N Sarkar 1 , Ron L Alterman 2 , Efstathios Papavassiliou 2 , Douglas L Teich 1 , Rafael Rojas 1 , Rafeeque A Bhadelia 1 , Jeremy Stormann 1 , Ines Cabral-Goncalves 1 , and David B Hackney 1
Radiology, Beth Israel Deaconess Medical
Center, Harvard Medical School, BOSTON, MA, United
of Neurosurgery, Beth Israel Deaconess Medical Center,
Harvard Medical School, BOSTON, MA, United States
Treatment efficacy for deep brain stimulators (DBS) in
medically refractory Parkinsons is high when surgical
planning and further assessments are done by high
quality MRI with adequate RF power although there exist
severe SAR restrictions for that. Sentinel events after
MRI seems rare but neurologic deficits previously
attributed to surgery could have been from routine MRI.
We have developed and tested the utility of a modified
FSTIR sequence within low SAR guidelines on patients
with DBS and observed similar tissue contrasts from the
low and high SAR sequences with low SAR images being
equally useful for diagnosis and neurosurgical planning.
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