Evidence map›Paper›PMID 25754288›Full record

ArticleMagnetic resonance in medicine2016

Separation of cellular and BOLD contributions to T2* signal relaxation.

Xialing Ulrich, Dmitriy A Yablonskiy

Open access · bronzeAbstract read
In one paragraph

Article in Magnetic resonance in medicine, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers.

0numbers the graph read from it
0cells of the map it votes in
54citing papers in PubMed
4.9field-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

54 citing papers in PubMed, 88 citations in OpenAlex.

  1. Brain oxygen extraction fraction mapping in patients with multiple sclerosis.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2022
    Trial
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  3. TE-aware state analysis and evolution in dynamic network connectivity.bioRxiv : the preprint server for biology · 2026
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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

2 authors at 1 institution in 1 country.

Xialing UlrichDepartment of Radiology, Washington University, St. Louis, Missouri, USA.
Dmitriy A YablonskiyDepartment of Radiology, Washington University, St. Louis, Missouri, USA.
Washington University in St. Louis · US

Funding

In vivo MRI Biomarkers of Microstructural Correlates of Brain Pathology in Preclinical and Early Alzheimer DiseaseR01AG054513 · NIA · WASHINGTON UNIVERSITY · PI YABLONSKIY, DMITRIY A · 2017 to 2021
$2.7M
QUANTITATIVE BOLD CONTRAST IN HEALTH AND DISEASER01NS055963 · NINDS · WASHINGTON UNIVERSITY · PI YABLONSKIY, DMITRIY A · 2008 to 2012
$1.6M
NIA NIH HHS R01 AG054513NINDS NIH HHS 5R01NS055963NINDS NIH HHS R01 NS055963
6 · The paper itself

Abstract

purposeThe development of a reliable clinical technique for quantitative measurements of the parameters defining the BOLD effect, i.e., oxygen extraction fraction (OEF), and deoxygenated cerebral blood volume, dCBV, is needed to study brain function in health and disease. Herein we propose such a technique that is based on a widely available gradient recalled echo (GRE) MRI. THEORY AND

methodsOur method is based on GRE with multiple echoes and a model of signal decay (Yablonskiy, MRM 1998) that takes into account microscopic cellular (R2), mesoscopic (BOLD), and macroscopic (background field gradients) contributions to the GRE signal decay with additional accounting for physiologic fluctuations.

resultsUsing 3 Tesla MRI, we generate high resolution quantitative maps of R2*, R2, R2', and tissue concentration of deoxyhemoglobin, the latter providing a quantitative version of SWI. Our results for OEF and dCBV in gray matter are in a reasonable agreement with the literature data.

conclusionThe proposed approach allows generating high resolution maps of hemodynamic parameters using clinical MRI. The technique can be applied to study such tissues as gray matter, tumors, etc.; however, it requires further development for use in tissues where extra- and intracellular compartments possess substantially different frequencies and relaxation properties (e.g., white matter).

Indexed as

AdultArtifactsBrainFemaleHealthy VolunteersHumansImage Processing, Computer-AssistedImaging, Three-DimensionalMagnetic Resonance ImagingMaleOxygenOxygenBOLDMRIneurological diseasesstroketumor

Identifiers

PMID25754288
PMCPMC4565789
OpenAlexW2150894480

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.