Evidence map›Paper›PMID 34031400›Full record

ReviewNPJ Parkinson's disease2021

Clinical utility of DaTscan in patients with suspected Parkinsonian syndrome: a systematic review and meta-analysis.

Danny Bega, Phillip H Kuo, Anastasia Chalkidou, Mariusz T Grzeda, Thomas Macmillan, Christine Brand, Zulfiqar H Sheikh, Angelo Antonini

Open access · goldAbstract readReview
In one paragraph

Review in NPJ Parkinson's disease, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 63 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
63citing papers in PubMed, 3 pooled it
7.1field-weighted citation impact, top 2% 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

63 citing papers in PubMed, 3 syntheses or guidelines pooled it, 113 citations in OpenAlex.

  1. IMovement disorders clinical practice · 2024
    Pooled it
  2. Pooled it
  3. Pooled it
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Clinical and Imaging Characteristics of Parkinson's Disease with Negative Alpha-Synuclein Seed Amplification Assay.Movement disorders : official journal of the Movement Disorder Society · 2026
    Article
  11. Review
  12. Global, regional, and national burden of Early-onset Parkinson's disease: A comprehensive analysis and forecast, 1990-2021.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2026
    Article
  13. Article
  14. Diagnosis and Management of Parkinson Disease in Individuals with Pre-Existing Mood Disorders.International journal of environmental research and public health · 2026
    Review
  15. Review
  16. Early parkinson's disease: levodopa requirements are associated with the striatal DaT-uptake.Journal of neural transmission (Vienna, Austria : 1996) · 2026
    Article
  17. Review
  18. Article
  19. Article
  20. Review

3 more citing papers are in PubMed but not listed here.

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 4 institutions in 3 countries.

Danny BegaNorthwestern University Feinberg School of Medicine, Chicago, IL, USA.
Phillip H KuoDepartments of Medical Imaging Medicine, and Biomedical Engineering, University of Arizona, Tucson, AZ, USA.
Anastasia ChalkidouKing's Technology Evaluation Centre, School of Biomedical Engineering and Imaging Sciences, King's College London, London, UK. anchalki@gmail.com.ORCID http://orcid.org/0000-0002-7519-8774
Mariusz T GrzedaKing's Technology Evaluation Centre, School of Biomedical Engineering and Imaging Sciences, King's College London, London, UK.
Thomas MacmillanKing's Technology Evaluation Centre, School of Biomedical Engineering and Imaging Sciences, King's College London, London, UK.ORCID http://orcid.org/0000-0001-7274-797X
Christine BrandGE Healthcare, Marlborough, MA, USA.
Zulfiqar H SheikhGE Healthcare, Pollards Wood, Nightingales Ln, Chalfont Saint Giles, UK.
Angelo AntoniniDepartment of Neuroscience, University of Padua, Padua, Italy.
King's College London · GBBanner - University Medical Center Tucson · USNorthwestern University · USUniversity of Padua · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Images of DaTscan (ioflupane [123I] SPECT) have been used as an adjunct to clinical diagnosis to facilitate the differential diagnosis of neurodegenerative (ND) Parkinsonian Syndrome (PS) vs. non-dopamine deficiency aetiologies of Parkinsonism. Despite several systematic reviews having summarised the evidence on diagnostic accuracy, the impact of imaging results on clinical utility has not been systematically assessed. Our objective was to examine the available evidence on the clinical utility of DaTscan imaging in changing diagnosis and subsequent management of patients with suspected PS. We performed a systematic review of published studies of clinical utility from 2000 to 2019 without language restrictions. A meta-analysis of change in diagnosis and management rates reported from each study was performed using a random-effects model and logit transformation. Sub-group analysis, meta-regression and sensitivity analysis was performed to explore heterogeneity. Twenty studies met the inclusion criteria. Thirteen of these contributed to the meta-analyses including 950 and 779 patients with a reported change in management and change in diagnosis, respectively. The use of DaTscan imaging resulted in a change in management in 54% (95% CI: 47-61%) of patients. Change in diagnosis occurred in 31% (95% CI: 22-42%) of patients. The two pooled analyses were characterised by high levels of heterogeneity. Our systematic review and meta-analysis show that imaging with DaTscan was associated with a change in management in approximately half the patients tested and the diagnosis was modified in one third. Regardless of time from symptom onset to scan results, these changes were consistent. Further research focusing on specific patient subgroups could provide additional evidence on the impact on clinical outcomes.

Identifiers

PMID34031400
PMCPMC8144619
OpenAlexW3165869586

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.