Evidence map›Paper›PMID 34969666›Full record

ArticleAJNR. American journal of neuroradiology2022

Can Shunt Response in Patients with Idiopathic Normal Pressure Hydrocephalus Be Predicted from Preoperative Brain Imaging? A Retrospective Study of the Diagnostic Use of the Normal Pressure Hydrocephalus Radscale in 119 Patients.

J F Carlsen, A D L Backlund, C A Mardal, S Taudorf, A V Holst, T N Munch, A E Hansen, S G Hasselbalch

Abstract read
In one paragraph

Article in AJNR. American journal of neuroradiology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 pooled it
–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

10 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Association between p-tau181 in cerebrospinal fluid and shunt response in patients with normal-pressure hydrocephalus.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2026
    Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Review
  9. Article
  10. 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

8 authors.

J F CarlsenFrom the Department of Radiology (J.F.C., C.A.M., A.E.H.) Jonathan.frederik.carlsen@regionh.dk.ORCID 0000-0002-6724-7281
A D L BacklundDepartment of Radiology (A.D.L.B.), Hospital of North Zealand, Hillerød, Denmark.ORCID 0000-0003-2709-8565
C A MardalFrom the Department of Radiology (J.F.C., C.A.M., A.E.H.).ORCID 0000-0002-6807-0668
S TaudorfDepartment of Neurology (S.T., S.G.H.).ORCID 0000-0001-9045-9795
A V HolstDanish Dementia Research Centre, and Department of Neurosurgery (A.V.H., T.N.M.), Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark.ORCID 0000-0002-3377-9087
T N MunchDanish Dementia Research Centre, and Department of Neurosurgery (A.V.H., T.N.M.), Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark.ORCID 0000-0001-5938-000X
A E HansenFrom the Department of Radiology (J.F.C., C.A.M., A.E.H.).ORCID 0000-0002-6457-1537
S G HasselbalchDepartment of Neurology (S.T., S.G.H.).ORCID 0000-0003-4750-4911

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeThe Normal Pressure Hydrocephalus Radscale is a combined scoring of 7 different structural imaging markers on preoperative brain CT or MR imaging in patients with idiopathic normal pressure hydrocephalus: callosal angle, Evans Index, Sylvian fissure dilation, apical sulcal narrowing, mean temporal horn diameter, periventricular WM lesions, and focal sulcal dilation. The purpose of this retrospective study was to assess the performance of the Normal Pressure Hydrocephalus Radscale in distinguishing idiopathic normal pressure hydrocephalus shunt responders from nonresponders. MATERIALS AND

methodsThe preoperative MR imaging and CT scans of 119 patients with idiopathic normal pressure hydrocephalus were scored using the Normal Pressure Hydrocephalus Radscale. A summary shunt-response score assessed within 6 months from ventriculoperitoneal shunt surgery, combining the effect on cognition, gait, and urinary incontinence, was used as a reference. The difference between the mean Normal Pressure Hydrocephalus Radscale for responders and nonresponders was tested using the Student

resultsNinety-four (79%) of 119 patients were shunt responders. The mean Normal Pressure Hydrocephalus Radscale score for shunt responders was 8.35 (SD, 1.53), and for nonresponders, 7.48 (SD, 1.53) (

conclusionsThe Normal Pressure Hydrocephalus Radscale showed moderate discrimination for shunt response but cannot, on its own, be used for selecting patients with idiopathic normal pressure hydrocephalus for shunt surgery.

Indexed as

Hydrocephalus, Normal PressureBrainHumansNeuroimagingReproducibility of ResultsRetrospective Studies

Identifiers

PMID34969666
PMCPMC8985670

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.