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Mesencephalic area measured by transcranial sonography in the differential diagnosis of parkinsonism.

Abstract：

BACKGROUND:Transcranial B-mode sonography (TCS) has become an important tool in the differential diagnosis of parkinsonism given that current technology enables an adequate assessment of brain structures. In this study we aimed at evaluating the usefulness of midbrain area measured by TCS in the differential diagnosis between Parkinson's Disease (PD) and Progressive Supranuclear Palsy (PSP). METHODS:Patients with a diagnosis of PD or PSP according to current clinical criteria were recruited. PSP patients were classified as Richardson's syndrome and PSP-parkinsonism. TCS was performed and the mesencephalic area and third ventricle width were measured offline by an examiner blinded to clinical diagnosis. RESULTS:TCS was performed in 60 patients (75% PD, 25% PSP). Eight patients (13,3%) had inadequate acoustic window. Patients with PSP had a smaller mesencephalic area (3.58 cm(2) vs 5.28 cm(2), p < 0.001). A mesencephalic area ≥4.27 cm(2) discriminates PD from PSP with a positive predictive value 100%. Patients with PSP also had a higher third ventricle diameter (8.84 mm vs 5.11 mm, p < 0.001). Within the PSP group patients with Richardson's syndrome had a wider third ventricle than patients with PSP-Parkinsonism phenotype (9.57 mm vs 7 mm, p = 0.01), but no differences were found in the mesencephalic area between both phenotypes. CONCLUSIONS:Measurement of the mesencephalic area and the third ventricle width by TCS is a non-invasive, easily accessible technique that is useful in the differential diagnosis between PD and PSP, at least in the late stages of the disease.

journal_name

Parkinsonism Relat Disord

journal_title

Parkinsonism & related disorders

authors

Sastre-Bataller I,Vázquez JF,Martínez-Torres I,Sahuquillo P,Rubio-Agustí I,Burguera JA,Ferrer JM,Valero C,Tembl JI

doi

10.1016/j.parkreldis.2013.04.010

subject

Has Abstract

pub_date

2013-08-01 00:00:00

pages

732-6

issue

8

eissn

1353-8020

issn

1873-5126

pii

S1353-8020(13)00155-7

journal_volume

19

pub_type

杂志文章,多中心研究

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