Evidence map›Paper›PMID 17158559›Full record

ArticleJournal of neurology, neurosurgery, and psychiatry2007

Accuracy of single-photon emission computed tomography in differentiating frontotemporal dementia from Alzheimer's disease.

R McNeill, G M Sare, M Manoharan, H J Testa, D M A Mann, D Neary, J S Snowden, A R Varma

Open access · bronzeAbstract readEvaluation Study
In one paragraph

Article in Journal of neurology, neurosurgery, and psychiatry, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 2 pooled it
3.4field-weighted citation impact, top 8% 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

26 citing papers in PubMed, 2 syntheses or guidelines pooled it, 110 citations in OpenAlex.

  1. Pooled it
  2. Systematic review of the diagnostic utility of SPECT imaging in dementia.European archives of psychiatry and clinical neuroscience · 2013
    Pooled it
  3. Article
  4. Article
  5. Review
  6. Biomarkers and Precision Medicine in Alzheimer's Disease.Advances in experimental medicine and biology · 2021
    Article
  7. Article
  8. Dual-phase [18F]florbetapir in frontotemporal dementia.European journal of nuclear medicine and molecular imaging · 2019
    Article
  9. Article
  10. Review
  11. Frontotemporal Dementias.Continuum (Minneapolis, Minn.) · 2016
    Review
  12. Emerging biomarkers in cognition.Clinics in geriatric medicine · 2013
    Review
  13. Article
  14. Article
  15. Article
  16. Clinical phenotypes and genetic biomarkers of FTLD.Journal of neural transmission (Vienna, Austria : 1996) · 2012
    Review
  17. Article
  18. Review
  19. The corticobasal syndrome-Alzheimer's disease conundrum.Expert review of neurotherapeutics · 2011
    Review
  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

8 authors at 3 institutions in 1 country.

R McNeillDepartment of Neurology, Cerebral Function Unit, Greater Manchester Neurosciences Centre, Salford, Manchester, UK.
G M Sare
M Manoharan
H J Testa
D M A Mann
D Neary
J S Snowden
A R Varma
Greater Manchester STEM Centre · GBManchester Royal Infirmary · GBSalford Royal Hospital · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAlzheimer's disease (AD) and frontotemporal dementia (FTD) are the commonest causes of presenile dementia. In the absence of a biological marker, diagnosis is reliant on clinical evaluation. Confirmation is often sought from neuroimaging, including single-photon emission computed tomography (SPECT). Most previous SPECT studies lack pathological validation.

aimTo examine the accuracy of SPECT in differentiating FTD from AD in patients with subsequent pathological confirmation.

methodsTechnetium-99-labelled hexamethyl propylene amine oxime SPECT images obtained at initial evaluation in 25 pathologically confirmed cases of FTD were examined. These images were visually rated by an experienced blinded nuclear medicine consultant and compared with those of 31 patients with AD, also with pathological validation.

resultsA reduction in frontal cerebral blood flow (CBF) was more common in FTD and was of diagnostic value (sensitivity 0.8, specificity 0.65 and likelihood ratio (LR) 2.25; 95% CI 1.35 to 3.77). A pattern of bilateral frontal CBF reduction without the presence of associated bilateral parietal CBF change is diagnostically more accurate (sensitivity 0.80, specificity 0.81 and +LR 4.13, 95% CI 1.96 to 8.71). Diagnostic categorisation (FTD or AD) on the basis of SPECT alone was less accurate than clinical diagnosis (based on neurology and detailed neuropsychological evaluation). One patient with FTD was initially clinically misdiagnosed as AD, owing to the lack of availability of full neuropsychological assessment. However, SPECT correctly diagnosed this patient, providing a diagnostic gain of 4%.

conclusionTechnetium-99-labelled hexamethyl propylene amine oxime SPECT CBF patterns provide valuable information in the diagnosis of FTD and AD. These data can be better used as an adjunct to clinical diagnosis if pathology is to be correctly predicted in life.

Indexed as

AgedAlzheimer DiseaseBrainDementiaDiagnosis, DifferentialFemaleFrontal LobeHumansMaleMiddle AgedRadiopharmaceuticalsRegional Blood FlowRetrospective StudiesSensitivity and SpecificityTechnetium Tc 99m ExametazimeTemporal LobeRadiopharmaceuticalsTechnetium Tc 99m Exametazime

Identifiers

PMID17158559
PMCPMC2077783
OpenAlexW2116387250

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.