Evidence map›Paper›PMID 29985921›Full record

ArticlePloS one2018

Quantitative MRI evaluation of glaucomatous changes in the visual pathway.

Mana Fukuda, Kazuko Omodaka, Yasuko Tatewaki, Noriko Himori, Izumi Matsudaira, Koji M Nishiguchi, Takaki Murata, Yasuyuki Taki, Toru Nakazawa

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
2.8field-weighted citation impact, top 10% 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

13 citing papers in PubMed, 27 citations in OpenAlex.

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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

9 authors at 1 institution in 1 country.

Mana FukudaDepartment of Ophthalmology, Tohoku University Graduate School of Medicine, Sendai, Japan.
Kazuko OmodakaDepartment of Ophthalmology, Tohoku University Graduate School of Medicine, Sendai, Japan.
Yasuko TatewakiInstitute of Development, Aging and Cancer, Tohoku University Graduate School of Medicine, Sendai, Japan.
Noriko HimoriDepartment of Ophthalmology, Tohoku University Graduate School of Medicine, Sendai, Japan.
Izumi MatsudairaInstitute of Development, Aging and Cancer, Tohoku University Graduate School of Medicine, Sendai, Japan.
Koji M NishiguchiDepartment of Advanced Ophthalmic Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan.
Takaki MurataDiagnostic Radiology, Tohoku University Graduate School of Medicine, Sendai, Japan.
Yasuyuki TakiInstitute of Development, Aging and Cancer, Tohoku University Graduate School of Medicine, Sendai, Japan.
Toru NakazawaDepartment of Ophthalmology, Tohoku University Graduate School of Medicine, Sendai, Japan.ORCID 0000-0002-5591-4155
Tohoku University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe aims of this study were to investigate glaucomatous morphological changes quantitatively in the visual cortex of the brain with voxel-based morphometry (VBM), a normalizing MRI technique, and to clarify the relationship between glaucomatous damage and regional changes in the visual cortex of patients with open-angle glaucoma (OAG).

methodsThirty-one patients with OAG (age: 55.9 ± 10.7, male: female = 9: 22) and 20 age-matched controls (age: 54.9 ± 9.8, male: female = 10: 10) were included in this study. The cross-sectional area (CSA) of the optic nerve was manually measured with T2-weighed MRI. Images of the visual cortex were acquired with T1-weighed 3D magnetization-prepared rapid acquisition with gradient echo (MPRAGE) sequencing, and the normalized regional visual cortex volume, i.e., gray matter density (GMD), in Brodmann areas (BA) 17, 18, and 19, was calculated with a normalizing technique based on statistic parametric mapping 8 (SPM8) analysis. We compared the regional GMD of the visual cortex in the control subjects and OAG patients. Spearman's rank correlation analysis was used to determine the relationship between optic nerve CSA and GMD in BA 17, 18, and 19.

resultsWe found that the normal and OAG patients differed significantly in optic nerve CSA (p < 0.001) and visual cortex GMD in BA 17 (p = 0.030), BA 18 (p = 0.003), and BA 19 (p = 0.005). In addition, we found a significant correlation between optic nerve CSA and visual cortex GMD in BA 19 (r = 0.33, p = 0.023), but not in BA 17 (r = 0.17, p = 0.237) or BA 18 (r = 0.24, p = 0.099).

conclusionQuantitative MRI parametric evaluation of GMD can detect glaucoma-associated anatomical atrophy of the visual cortex in BA 17, 18, and 19. Furthermore, GMD in BA 19 was significantly correlated to the damage level of the optic nerve, as well as the retina, in patients with OAG. This is the first demonstration of an association between the cortex of the brain responsible for higher-order visual function and glaucoma severity. Evaluation of the visual cortex with MRI is thus a very promising potential method for objective examination in OAG.

Indexed as

AdultAgedCross-Sectional StudiesFemaleGlaucoma, Open-AngleGray MatterHumansMagnetic Resonance ImagingMaleMiddle AgedOptic NerveProspective StudiesVisual Cortex

Identifiers

PMID29985921
PMCPMC6037347
OpenAlexW2813789523

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LicenceCC BY
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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.