Evidence map›Paper›PMID 31149866›Full record

ArticleThe neuroradiology journal2019

Accuracy of nigrosome-1 detection to discriminate patients with Parkinson's disease and essential tremor.

Manuel S Perez Akly, Carla V Stefani, Lucía Ciancaglini, José S Bestoso, Jorge A Funes, Diego J Bauso, Cristina H Besada

Open access · greenAbstract read
In one paragraph

Article in The neuroradiology journal, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 2 pooled it
3.6field-weighted citation impact, top 7% 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

18 citing papers in PubMed, 2 syntheses or guidelines pooled it, 36 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Review
  9. Review
  10. Review
  11. No evidence of iron deposition in essential tremor: a susceptibility-weighted imaging study.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2021
    Article
  12. Review
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. 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

7 authors at 1 institution in 1 country.

Manuel S Perez AklyDepartment of Diagnostic Imaging, Hospital Italiano de Buenos Aires, Argentina.ORCID https://orcid.org/0000-0002-5144-6462
Carla V StefaniDepartment of Neurology, Hospital Italiano de Buenos Aires, Argentina.
Lucía CiancagliniDepartment of Neurology, Hospital Italiano de Buenos Aires, Argentina.
José S BestosoDepartment of Neurology, Hospital Italiano de Buenos Aires, Argentina.
Jorge A FunesDepartment of Diagnostic Imaging, Hospital Italiano de Buenos Aires, Argentina.
Diego J BausoDepartment of Neurology, Hospital Italiano de Buenos Aires, Argentina.
Cristina H BesadaDepartment of Diagnostic Imaging, Hospital Italiano de Buenos Aires, Argentina.
Hospital Italiano de Buenos Aires · AR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe use of susceptibility weighted imaging in high field magnetic resonance imaging scanners can detect the nigrosome-1 area located in the caudo-lateral region of the pars compacta in the substantia nigra. This structure comprises a significant amount of dopaminergic neurons and degenerates in the early stages of Parkinson's disease. Essential tremor is a neurological condition that in some cases could be confused with the early stages of Parkinson's disease with a possible error in clinical diagnosis. Our purpose is to evaluate the accuracy of nigrosome-1 detection by high resolution magnetic resonance imaging to discriminate Parkinson's disease from essential tremor.

methodsA case-control study compared patients with a clinical diagnosis of Parkinson's disease and essential tremor. Magnetic resonance imaging studies were performed using a 3T magnetic resonance imaging scanner. The susceptibility weighted imaging sequence was obtained in the axial plane with an isotropic voxel of 0.75 mm. Two independent neuroradiologists evaluated the images without access to clinical patient data.

resultsSixteen patients were included in each group (Parkinson's disease and essential tremor). Average age: Parkinson's disease group: 71.3 (SD 6.3) and essential tremor group: 68.3 (SD 12.3). For the first evaluator, the nigrosome-1 area was absent in 15 patients with Parkinson's disease and in two with essential tremor and for the second evaluator was absent in 15 patients with Parkinson's disease and four with essential tremor. The sensitivity/specificity for the diagnosis of Parkinson's disease was 93.75%/87.5% for the first evaluator and 93.75%/75% for the second evaluator.

conclusionThe detection of the nigrosome-1 area is a useful tool in the differential diagnosis between Parkinson's disease and essential tremor, with high sensitivity and specificity.

Indexed as

AgedAged, 80 and overCase-Control StudiesDiagnosis, DifferentialEssential TremorFemaleHumansMagnetic Resonance ImagingMaleMiddle AgedParkinson DiseasePars CompactaSensitivity and SpecificitySubstantia Nigraessential tremornigrosome-1Parkinson’s disease

Identifiers

PMID31149866
PMCPMC6856998
OpenAlexW2947190458

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.