Evidence map›Paper›PMID 28035426›Full record

Observational studyNeuroradiology2017

Diagnostic imaging of dementia with Lewy bodies by susceptibility-weighted imaging of nigrosomes versus striatal dopamine transporter single-photon emission computed tomography: a retrospective observational study.

Koji Kamagata, Tomoya Nakatsuka, Ryuji Sakakibara, Yohei Tsuyusaki, Tomohiro Takamura, Kanako Sato, Michimasa Suzuki, Masaaki Hori, Kanako K Kumamaru, Tsutomu Inaoka and 2 more

Erratum issuedAbstract readObservational Study
PubMed Publisher
In one paragraph

Observational study in Neuroradiology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 22 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 4 pooled it
2.8field-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

22 citing papers in PubMed, 4 syntheses or guidelines pooled it, 40 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
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  4. Pooled it
  5. Article
  6. Article
  7. Review
  8. Article
  9. Review
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  11. Review
  12. MRI quantitative susceptibility mapping of the substantia nigra as an early biomarker for Lewy body disease.Journal of neuroimaging : official journal of the American Society of Neuroimaging · 2021
    Article
  13. Article
  14. Article
  15. Article
  16. Neuroimaging in Lewy body dementia.Journal of neurology · 2019
    Review
  17. Review
  18. Article
  19. Article
  20. Is Hippocampal Volumetry Really All That Matters?AJNR. American journal of neuroradiology · 2017
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors at 3 institutions in 1 country.

Koji KamagataDepartment of Radiology, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan. kkamagat@juntendo.ac.jp.ORCID http://orcid.org/0000-0001-5028-218X
Tomoya NakatsukaDepartment of Radiology, Toho University Sakura Medical Center, 564-1 Shimoshizu, Sakura, Sakura, 285-8741, Japan.
Ryuji SakakibaraDepartment of Neurology, Toho University Sakura Medical Center, 564-1 Shimoshizu, Sakura, Sakura, 285-8741, Japan.
Yohei TsuyusakiDepartment of Neurology, Toho University Sakura Medical Center, 564-1 Shimoshizu, Sakura, Sakura, 285-8741, Japan.
Tomohiro TakamuraDepartment of Radiology, University of Yamanashi, 1111 Shimokato, Chuo-shi, Yamanashi, 409-3898, Japan.
Kanako SatoDepartment of Radiology, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan.
Michimasa SuzukiDepartment of Radiology, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan.
Masaaki HoriDepartment of Radiology, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan.
Kanako K KumamaruDepartment of Radiology, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan.
Tsutomu InaokaDepartment of Radiology, Toho University Sakura Medical Center, 564-1 Shimoshizu, Sakura, Sakura, 285-8741, Japan.
Shigeki AokiDepartment of Radiology, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan.
Hitoshi TeradaDepartment of Radiology, Toho University Sakura Medical Center, 564-1 Shimoshizu, Sakura, Sakura, 285-8741, Japan.
Juntendo University · JPToho University · JPUniversity of Yamanashi Hospital · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionThe characteristics of dementia with Lewy bodies (DLB), Alzheimer's disease (AD) and amnestic mild cognitive impairment (a-MCI) overlap but require different treatments; therefore, it is important to differentiate these pathologies. Assessment of dopamine uptake in the striatum using dopamine transporter (DaT) single-photon emission computed tomography (SPECT) is the gold standard for diagnosing DLB; however, this modality is expensive, time consuming and involves radiation exposure. Degeneration of the substantia nigra nigrosome-1, which occurs in DLB, but not in AD/a-MCI, can be identified by 3T susceptibility-weighted imaging (SWI). Therefore, the aim of this retrospective observational study was to compare SWI with DaT-SPECT for differentiation of DLB from AD/a-MCI.

methodsSWI data were acquired for patients with clinically diagnosed DLB (n = 29), AD (n = 18), a-MCI (n = 13) and healthy controls (n = 26). Images were analysed for nigrosome-1 degeneration. Diagnostic accuracy was evaluated for DLB, AD and a-MCI compared with striatal dopamine uptake using DaT-SPECT.

resultsSWI achieved 90% diagnostic accuracy (93% sensitivity, 87% specificity) for the detection of nigrosome-1 degeneration in DLB and not in AD/a-MCI as compared with 88.3% accuracy (93% sensitivity, 84% specificity) using DaT-SPECT.

conclusionsSWI nigrosome-1 evaluation was useful in differentiating DLB from AD/a-MCI, with high accuracy. This less invasive and less expensive method is a potential alternative to DaT-SPECT for the diagnosis of DLB.

Indexed as

AgedAged, 80 and overBrain MappingCase-Control StudiesFemaleHumansLewy Body DiseaseMagnetic Resonance ImagingMaleMiddle AgedRetrospective StudiesSensitivity and SpecificitySubstantia NigraTomography, Emission-Computed, Single-PhotonAlzheimer’s diseaseDementiaDopamineLewy bodiesParkinson disease

Identifiers

PMID28035426
OpenAlexW2561709966

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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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.