The value of brain perfusion SPECT for differentiation between mildly symptomatic idiopathic Parkinson's disease and the Parkinson variant of multiple system atrophy

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IntroductionBrain perfusion deficits have been reported previously in patients with Parkinson's disease (PD) and multiple system atrophy (MSA). However, clinical differential diagnosis between mildly symptomatic PD and the Parkinson's variant of MSA (MSA-P) is difficult because of the similarity of symptoms between parkinsonian disorders. Accurate diagnosis of these disorders is important for treatment decisions, appropriate advice, management, and prognosis. Therefore, we conducted this study to investigate the difference in perfusion single-photon emission computed tomography (SPECT) between patients with mild symptomatology of PD and those with MSA-P using the SPM program.Patients and methodsWe consecutively recruited 47 patients with PD, 21 patients with MSA-P, and 48 age-matched healthy controls. All participants underwent Tc-99m hexamethylpropyleneamine oxime (HMPAO) perfusion SPECT, and the perfusion images were analyzed.ResultsPerfusion SPECT showed hypoperfusion in the frontal cortex in both PD and MSA-P patients compared with healthy controls. Hypoperfusion in the occipital cortex was seen only in PD patients. There are no significant intercorrelations of blood flow in the cerebral region between PD and MSA-P patients.ConclusionWe cautiously assume that the only difference in cerebral blood perfusion images of mild symptomatic PD and MSA-P patients is blood perfusion in the occipital cortex. Although there are many cerebral regions with similar perfusion in patients with PD and MSA-P of mild symptomatology, we could assume that each has a completely different pathophysiology for PD and MSA-P because of the lack of significant intercorrelation of blood flow in the cerebral region.
Publisher
LIPPINCOTT WILLIAMS & WILKINS
Issue Date
2015-10
Language
English
Article Type
Article
Keywords

DIAGNOSIS; FEATURES; PET

Citation

NUCLEAR MEDICINE COMMUNICATIONS, v.36, no.10, pp.1049 - 1054

ISSN
0143-3636
DOI
10.1097/MNM.0000000000000354
URI
http://hdl.handle.net/10203/203496
Appears in Collection
BiS-Journal Papers(저널논문)
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