Evidence map›Paper›PMID 25449747›Full record

ArticleNeuroImage2015

Probing region-specific microstructure of human cortical areas using high angular and spatial resolution diffusion MRI.

Manisha Aggarwal, David W Nauen, Juan C Troncoso, Susumu Mori

Open access · greenAbstract read
In one paragraph

Article in NeuroImage, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed, 2 pooled it
5.4field-weighted citation impact, top 5% 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

46 citing papers in PubMed, 2 syntheses or guidelines pooled it, 93 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

4 authors at 2 institutions in 1 country.

Manisha AggarwalRussell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, USA. Electronic address: maggarw2@jhu.edu.
David W NauenDivision of Neuropathology, Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Juan C TroncosoDivision of Neuropathology, Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Susumu MoriRussell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, USA; F.M. Kirby Research Center for Functional Brain Imaging, Kennedy Krieger Institute, Baltimore, MD, USA.
Johns Hopkins University · USJohns Hopkins Medicine · US

Funding

'T V ASSESSMENT - MEMORY DISORDERED PATIENTS'P50AG005146 · NIA · JOHNS HOPKINS UNIVERSITY · PI HUGANIR, RICHARD L · 1985 to 2019
$37.6M
Continued Development and Maintenance of MriStudioR01NS084957 · NINDS · JOHNS HOPKINS UNIVERSITY · PI MILLER, MICHAEL I, MORI, SUSUMU · 2013 to 2022
$3.6M
Research Education Program in Experimental NeuropathologyR25NS079185 · NINDS · JOHNS HOPKINS UNIVERSITY · PI TRONCOSO, JUAN · 2012 to 2017
$364k
Multi-resolution three dimensional stereotaxic atlas of the human brainstemR03EB017806 · NIBIB · JOHNS HOPKINS UNIVERSITY · PI AGGARWAL, MANISHA · 2014 to 2015
$162k
NIA NIH HHS P50 AG005146NIBIB NIH HHS R03 EB017806NIBIB NIH HHS R03EB017806NINDS NIH HHS R01 NS084957NINDS NIH HHS R01NS084957NINDS NIH HHS R25 NS079185
6 · The paper itself

Abstract

Regional heterogeneity in cortical cyto- and myeloarchitecture forms the structural basis of mapping of cortical areas in the human brain. In this study, we investigate the potential of diffusion MRI to probe the microstructure of cortical gray matter and its region-specific heterogeneity across cortical areas in the fixed human brain. High angular resolution diffusion imaging (HARDI) data at an isotropic resolution of 92-μm and 30 diffusion-encoding directions were acquired using a 3D diffusion-weighted gradient-and-spin-echo sequence, from prefrontal (Brodmann area 9), primary motor (area 4), primary somatosensory (area 3b), and primary visual (area 17) cortical specimens (n=3 each) from three human subjects. Further, the diffusion MR findings in these cortical areas were compared with histological silver impregnation of the same specimens, in order to investigate the underlying architectonic features that constitute the microstructural basis of diffusion-driven contrasts in cortical gray matter. Our data reveal distinct and region-specific diffusion MR contrasts across the studied areas, allowing delineation of intracortical bands of tangential fibers in specific layers-layer I, layer VI, and the inner and outer bands of Baillarger. The findings of this work demonstrate unique sensitivity of diffusion MRI to differentiate region-specific cortical microstructure in the human brain, and will be useful for myeloarchitectonic mapping of cortical areas as well as to achieve an understanding of the basis of diffusion NMR contrasts in cortical gray matter.

Indexed as

AdultAgedCadaverCerebral CortexDiffusion Magnetic Resonance ImagingHumansImage Processing, Computer-AssistedImaging, Three-DimensionalMaleMiddle AgedCortical areasDiffusion MRIGray matterHumanMicrostructure

Identifiers

PMID25449747
PMCPMC4262592
OpenAlexW1969586479

What OpenQuestion holds

Textmetadata
LicenceTDM
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.