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- Title
MRI measurements of brainstem structures in patients with vascular parkinsonism, progressive supranuclear palsy, and Parkinson's disease.
- Authors
Kim, Byeong; Choi, Seong-Min; Choi, Kang-Ho; Nam, Tai-Seung; Kim, Joon-Tae; Lee, Seung-Han; Park, Man-Seok; Yoon, Woong; Kim, Byeong C
- Abstract
Magnetic resonance (MR) measurements of brainstem structures have been reported to be useful in differentiating patients with progressive supranuclear palsy (PSP) from those with Parkinson's disease (PD). The aim of this study was to determine whether quantitative measurements of brainstem structures on MR images can help differentiate vascular parkinsonism (VaP) from degenerative parkinsonism (PD and PSP). Areas of the midbrain and pons, and widths of the superior cerebellar peduncle (SCP) and middle cerebellar peduncle (MCP) were measured in 62 patients with PD, 25 patients with PSP (11 probable and 14 possible), and 24 patients with VaP on T 1-weighted MR images. The midbrain-to-pons area ratio (M/P ratio), MCP-to-SCP width ratio (MCP/SCP ratio), and MR parkinsonism index (MRPI; P/M × MCP/SCP) were calculated. The midbrain area and M/P ratio of patients with VaP (104 and 0.22 mm2, respectively) were smaller than those in patients with PD (121 and 0.24 mm2, respectively) and larger than those in patients with PSP (90 and 0.19 mm2, respectively). The MRPI was significantly larger in patients with PSP (13.6) in comparison with those with PD (10.1) and VaP (10.7). However, the MRPI of patients with VaP was not significantly different from patients with PD. Our study showed that MRPI was useful in differentiating PSP from VaP or PD. Thus, MR imaging measurements of brainstem structures may help differentiate patients with VaP from those with PD and PSP.
- Subjects
MAGNETIC resonance imaging; BRAIN stem; PARKINSONIAN disorders; PROGRESSIVE supranuclear palsy; PARKINSON'S disease
- Publication
Neurological Sciences, 2017, Vol 38, Issue 4, p627
- ISSN
1590-1874
- Publication type
journal article
- DOI
10.1007/s10072-017-2812-1