[Findings of computed tomography in vascular parkinsonism]

CT findings in the patients with vascular Parkinsonism were discussed. We investigated 26 patients who were clinically diagnosed as vascular Parkinsonism aged from 55 to 77 years old (mean 66.4), and compared with 27 controls aged from 54 to 78 years old (mean 69.1). In order to evaluate the ventricular size, we measured the following A-F. A: The ratio of the ventricle-caudate nucleus distance to the maximum transverse inner diameter of skull on 4.0 cm above orbitomeatal plane. B: The ratio of the largest width of the anterior horn of the lateral ventricle to the maximum transverse inner diameter on the same level as A. C: The ratio of the maximum width of the third ventricle to the maximum transverse inner diameter of skull on the same level as A. D: The ratio of the minimal width of both cellae mediae to the maximum transverse inner diameter on 6.0 cm above orbitomeatal plane. E: The ratio of the area of both the anterior horn to the intracranial area on the same level as A. F: The ratio of the area of both the body of the lateral ventricle to the intracranial area on the same level as D. C was only statistically significant compared with controls. The enlargement of cerebral cortical sulci in patients was more prominent than that in controls. The degree of periventricular lucency in patients was more severe than that in controls. The number of small low density area in basal ganglia in patients was more than that in controls.(ABSTRACT TRUNCATED AT 250 WORDS)