Putaminal magnetic resonance imaging features at various magnetic field strengths in multiple system atrophy

Movement Disorders : Official Journal of the Movement Disorder Society
Hirohisa WatanabeG Sobue

Abstract

We delineated the effects of magnetic field strength on signal intensities to facilitate the specific findings of multiple system atrophy (MSA). Fifteen patients with probable MSA were imaged by 0.35T fast spin-echo (FSE), 1.5T FSE, and 3.0T FSE using a consistent protocol, testing all field strengths on the same day. Sixty patients with probable Parkinson's disease (PD) also underwent imaging. Moderate or marked hyperintensity at the dorsolateral outer putaminal margin, hyperintensity of the putaminal body, hypointensity relative to the globus pallidus at the dorsolateral putaminal margin, and infratentorial signal changes were evaluated as specific findings for MSA. As the field strength increased, the occurrence of hyperintensity both at the dorsolateral outer putaminal margin and of the putaminal body decreased, while the occurrence of hypointensity at the dorsolateral putaminal margin increased in MSA. The occurrence of uniform mild hyperintensity of the outer putaminal margin was evident in 7% at 0.35T, 40% at 1.5T, and 47% at 3.0T in MSA and in 5% at 0.35T, 60% at 1.5T, and 75% at 3.0T in PD. However, no PD patients showed hyperintensity at the dorsolateral outer putaminal margin and that of the putaminal body. Putaminal...Continue Reading

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Citations

Mar 10, 2011·Journal of Neurology, Neurosurgery, and Psychiatry·Yan RollandUNKNOWN NNIPPS Study Group
Jan 27, 2012·Rinshō shinkeigaku = Clinical neurology·Hirohisa WatanabeGen Sobue
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Dec 3, 2013·Rinshō shinkeigaku = Clinical neurology·Hirohisa WatanabeGen Sobue
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Jul 1, 2016·Rinshō shinkeigaku = Clinical neurology·Hirohisa WatanabeGen Sobue
Apr 6, 2017·Journal of Neural Transmission·Beatrice HeimKlaus Seppi
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Jan 4, 2021·Brain Structure & Function·Amaury De BarrosPatrice Péran
Oct 13, 2020·Movement Disorders Clinical Practice·Maria Teresa PellecchiaUNKNOWN Members of the Movement Disorder Society Multiple System Atrophy Study Group

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