Evidence map›Paper›PMID 19633907›Full record

ArticleJournal of neurology2009

An evaluation of the usefulness of neuroimaging for the diagnosis of Japanese encephalitis.

N M Dung, Lance Turtle, W K Chong, N T Mai, T T Thao, T T Thuy, R Kneen, N H Phu, B Wills, J Farrar and 2 more

Abstract readComparative StudyEvaluation Study
PubMed Publisher
In one paragraph

Article in Journal of neurology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 2 pooled it
3.3field-weighted citation impact, top 9% of its field
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

21 citing papers in PubMed, 2 syntheses or guidelines pooled it, 54 citations in OpenAlex.

  1. Guideline
  2. Japanese Encephalitis Vaccine: Recommendations of the Advisory Committee on Immunization Practices.MMWR. Recommendations and reports : Morbidity and mortality weekly report. Recommendations and reports · 2019
    Guideline
  3. Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Safety of Japanese encephalitis vaccines.Human vaccines & immunotherapeutics · 2021
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Japanese encephalitis.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2018
    Article
  14. Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Advances in pediatric neurovirology.Current neurology and neuroscience reports · 2010
    Review
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

12 authors at 7 institutions in 2 countries.

N M DungCentre for Tropical Diseases, Cho Quan Hospital, Ho Chi Minh City, Vietnam.
Lance Turtle
W K Chong
N T Mai
T T Thao
T T Thuy
R Kneen
N H Phu
B Wills
J Farrar
K Das
Tom Solomon
Hospital for Tropical Diseases · VNOxford University Clinical Research Unit · VNLiverpool Community Health NHS Trust · GBRoyal Liverpool University Hospital · GBUniversity College London · GBUniversity of Liverpool · GBWalton Centre · GB

Funding

Medical Research Council G116/194Wellcome Trust
6 · The paper itself

Abstract

Japanese encephalitis virus (JEV) is estimated to cause 30–50,000 cases of encephalitis every year. The disease occurs mainly in rural Asia and is transmitted to humans from birds and pigs by mosquitoes of the genus Culex. JE is diagnosed with antibody testing of the serum and CSF, but this is not available in many hospitals. Neuroimaging abnormalities, particularly thalamic hypodensity on computed tomography (CT) and hyperintensity on T2 weighted magnetic resonance imaging (MRI) have been described in case studies, but their usefulness for diagnosing JE is not known. We have therefore evaluated the usefulness of neuroimaging (CT and MRI) for the diagnosis of JE. The findings of thalamic lesions were compared with the final serological diagnosis in a cohort of 75 patients (children and adults) with suspected CNS infections in Southern Vietnam, a JEV endemic area. Thalamic lesions on CT and/or MRI combined had sensitivity 23% (95% confidence interval 12.9–33.1%), specificity 100%, positive predictive value 100% and negative predictive value 42.1% (95% confidence interval 30.2–53.8%) for a diagnosis of JE in this cohort. Over time, the thalamic lesions resolved in some patients. One patient showed disappearance of lesions on CT followed by reappearance of the lesions some time later, known as the fogging effect. In this setting, the presence of thalamic abnormalities suggested the diagnosis of JE, but their absence did not exclude it.

Indexed as

AdolescentAdultBrainChildChild, PreschoolCohort StudiesEncephalitis, JapaneseFemaleHumansMagnetic Resonance ImagingMaleThalamusTomography, X-Ray ComputedVietnamYoung Adult

Identifiers

PMID19633907
OpenAlexW2117185419

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.