Evidence map›Paper›PMID 35087391›Full record

ReviewFrontiers in aging neuroscience2021

Application of Evans Index in Normal Pressure Hydrocephalus Patients: A Mini Review.

Xi Zhou, Jun Xia

Abstract readReview
In one paragraph

Review in Frontiers in aging neuroscience, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

39 citing papers in PubMed.

  1. Article
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  3. Observational
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  15. Dynamic multi-scale deep learning with mixture of experts for differentiating iNPH and PSP using MRI.International journal of computer assisted radiology and surgery · 2025
    Article
  16. Portable Bedside Low-Field MRI for Assessment of Ventricular Size.AJNR. American journal of neuroradiology · 2025
    Article
  17. Article
  18. Review
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors.

Xi ZhouDepartment of Radiology, The First Affiliated Hospital of Shenzhen University, Health Science Center, Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, China.
Jun XiaDepartment of Radiology, The First Affiliated Hospital of Shenzhen University, Health Science Center, Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

With an ever-growing aging population, the prevalence of normal pressure hydrocephalus (NPH) is increasing. Clinical symptoms of NPH include cognitive impairment, gait disturbance, and urinary incontinence. Surgery can improve symptoms, which leads to the disease's alternative name: treatable dementia. The Evans index (EI), defined as the ratio of the maximal width of the frontal horns to the maximum inner skull diameter, is the most commonly used index to indirectly assess the condition of the ventricles in NPH patients. EI measurement is simple, fast, and does not require any special software; in clinical practice, an EI >0.3 is the criterion for ventricular enlargement. However, EI's measurement methods, threshold setting, correlation with ventricle volume, and even its clinical value has been questioned. Based on the EI, the z-EI and anteroposterior diameter of the lateral ventricle index were derived and are discussed in this review.

Indexed as

computed tomographyEvans indexmagnetic resonance imagingnormal pressure hydrocephalusventricular volume

Identifiers

PMID35087391
PMCPMC8787286

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.