Evans and his index.

IF 2.1 4区医学 Q3 CLINICAL NEUROLOGY

European Neurology Pub Date : 2025-04-25 DOI:10.1159/000545917

Kimberley J R Fleuren, Peter J Koehler, Erik I Hoff

引用次数: 0

Abstract

Neurologists use the eponymous Evans Index to measure cerebral ventricles. It was formulated in 1942 by the Detroit radiologist William A. Evans (1907-1956). The index represents the ratio between the cerebral ventricles' frontal horns' maximal width and the skull's internal diameter. It was developed after studying pneumoencephalography (PEG) in hydrocephalic children. A cut-off value of 0.30 is considered as a pathological sign of ventriculomegaly. This value was found to be valid even nowadays in adults studied by CT or MRI but with less predictive value than in younger adults.

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埃文斯和他的索引。

神经学家使用同名的埃文斯指数来测量脑室。1942年，底特律的放射科医生威廉·埃文斯（William A. Evans, 1907-1956）提出了这一说法。该指数表示脑室额角最大宽度与颅骨内径的比值。它是在研究脑积水儿童的气脑电图（PEG）后发展起来的。截断值0.30被认为是脑室肿大的病理征象。这个值被发现是有效的，即使是现在的成年人通过CT或MRI研究，但与较年轻的成年人相比，其预测价值较低。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

European Neurology 医学-临床神经学

CiteScore

4.40

自引率

4.20%

发文量

审稿时长

4-8 weeks

期刊介绍： ''European Neurology'' publishes original papers, reviews and letters to the editor. Papers presented in this journal cover clinical aspects of diseases of the nervous system and muscles, as well as their neuropathological, biochemical, and electrophysiological basis. New diagnostic probes, pharmacological and surgical treatments are evaluated from clinical evidence and basic investigative studies. The journal also features original works and reviews on the history of neurology.