Evidence map›Paper›PMID 25557404›Full record

ArticleBrain research2015

Ultra-high spatial resolution basal and evoked cerebral blood flow MRI of the rat brain.

Qiang Shen, Shiliang Huang, Timothy Q Duong

Open access · greenAbstract read
In one paragraph

Article in Brain research, 2015. 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
1.6field-weighted citation impact, top 16% 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, 20 citations in OpenAlex.

  1. Three-dimensional high-resolution TMagnetic resonance in medicine · 2025
    Article
  2. Article
  3. Review
  4. Reduced cerebral blood flow in anJournal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2020
    Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Functional magnetic resonance imaging in chronic ischaemic stroke.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2016
    Review
  12. Article
  13. 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

3 authors at 2 institutions in 1 country.

Qiang ShenResearch Imaging Institute, University of Texas Health Science Center, San Antonio, 8403 Floyd Curl Dr, TX 78229, United States; Department of Ophthalmology, University of Texas Health Science Center, San Antonio, TX, United States.
Shiliang HuangResearch Imaging Institute, University of Texas Health Science Center, San Antonio, 8403 Floyd Curl Dr, TX 78229, United States.
Timothy Q DuongResearch Imaging Institute, University of Texas Health Science Center, San Antonio, 8403 Floyd Curl Dr, TX 78229, United States; Department of Ophthalmology, University of Texas Health Science Center, San Antonio, TX, United States; Department of Radiology, University of Texas Health Science Center, San Antonio, TX, United States; Department of Physiology, University of Texas Health Science Center, San Antonio, TX, United States; South Texas Veterans Health Care System, San Antonio, TX, United States. Electronic address: duongt@uthscsa.edu.
The University of Texas Health Science Center at San Antonio · USSouth Texas Veterans Health Care System · US

Funding

Institute for Integration of Medicine & Science: A Partnership to Improve HealthUL1TR001120 · NCATS · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI CLARK, ROBERT A, HARGREAVES, KENNETH M · 2013 to 2017
$16.5M
Stroke Imaging of Conscious RatsR01NS045879 · NINDS · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI DUONG, TIMOTHY Q. · 2004 to 2014
$3.1M
NCATS NIH HHS UL1 TR001120NCATS NIH HHS UL1TR001120NINDS NIH HHS R01 NS045879NINDS NIH HHS R01NS45879
6 · The paper itself

Abstract

Cerebral blood flow (CBF) is tightly coupled to metabolism and neural activity under normal physiological conditions, and is often perturbed in disease states. The goals of this study were to implement a high-resolution (up to 50×38μm(2)) CBF MRI protocol of the rat brain, create a digital CBF atlas, report CBF values for 30+ brain structures based on the atlas, and explore applications of high-resolution CBF fMRI of forepaw stimulation. Excellent blood-flow contrasts were observed among different cortical and subcortical structures. CBF MRI showed column-like alternating bright and dark bands in the neocortices, reflecting the layout of descending arterioles and ascending venules, respectively. CBF MRI also showed lamina-like alternating bright and dark layers across the cortical thicknesses, consistent with the underlying vascular density. CBF profiles across the cortical thickness showed two peaks in layers IV and VI and a shallow trough in layer V. Whole-brain CBF was about 0.89ml/g/min, with the highest CBF values found amongst the neocortical structures (1ml/g/min, range: 0.89-1.16ml/g/min) and the lowest CBF values in the corpus callosum (0.32ml/g/min), yielding a gray:white matter CBF ratio of 3.1. CBF fMRI responses peaked across layers IV-V, whereas the BOLD fMRI responses showed a peak in the superficial layers II-III. High-resolution basal CBF MRI, evoked CBF fMRI, and CBF brain atlas can be used to study neurological disorders (such as ischemic stroke).

Indexed as

Atlases as TopicAnimalsArteriolesBrainBrain IschemiaCerebrovascular CirculationDisease Models, AnimalMagnetic Resonance ImagingMaleOxygenRats, Sprague-DawleyStrokeVenulesOxygenArterial spin labelingColumnar resolutionHigh resolution imagingLayer specificity

Identifiers

PMID25557404
PMCPMC4366194
OpenAlexW2146761499

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.