Evidence map›Paper›PMID 25708263›Full record

ArticleMagnetic resonance imaging2015

Cerebrovascular reactivity measured with arterial spin labeling and blood oxygen level dependent techniques.

Yongxia Zhou, Zachary B Rodgers, Anderson H Kuo

Abstract read
In one paragraph

Article in Magnetic resonance imaging, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 2 pooled it
2.4field-weighted citation impact, top 12% 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

26 citing papers in PubMed, 2 syntheses or guidelines pooled it, 48 citations in OpenAlex.

  1. Pooled it
  2. Variability of physiological brain perfusion in healthy subjects - A systematic review of modifiers. Considerations for multi-center ASL studies.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2018
    Pooled it
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  16. Cerebrovascular reactivity in retinal vasculopathy with cerebral leukoencephalopathy and systemic manifestations.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2021
    Observational
  17. Separating vascular and neuronal effects of age on fMRI BOLD signals.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2021
    Review
  18. Article
  19. Article
  20. Comparison of simultaneous arterial spin labeling MRI andJournal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2020
    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 1 institution in 1 country.

Yongxia ZhouDepartment of Radiology, University of Pennsylvania, Philadelphia, PA 19104. Electronic address: zhouyong@mail.med.upenn.edu.
Zachary B RodgersDepartment of Radiology, University of Pennsylvania, Philadelphia, PA 19104.
Anderson H KuoDepartment of Radiology, University of Texas South Medical Center, San Antonio, TX.
University of Pennsylvania · US

Funding

QUANTITATIVE MRI AND 1H-MRS IN TRAUMATIC BRAIN INJURYR01NS039135 · NINDS · UNIVERSITY OF PENNSYLVANIA · PI LUI, YVONNE W · 2000 to 2017
$10.1M
Brain Oxygen Metabolism and Hemodynamic Impairment in Multiple SclerosisR01NS076588 · NINDS · NEW YORK UNIVERSITY SCHOOL OF MEDICINE · PI GE, YULIN · 2012 to 2016
$2.7M
Research Training for Radiology Residents, San Antonio, TexasR25EB016631 · NIBIB · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI FOX, PETER THORNTON · 2014 to 2018
$335k
NIBIB NIH HHS R25 EB016631NINDS NIH HHS 2R01 NS039135NINDS NIH HHS 5R01 NS076588NINDS NIH HHS R01 NS039135NINDS NIH HHS R01 NS076588
6 · The paper itself

Abstract

purposeTo compare cerebrovascular reactivity (CVR) quantified with pseudo-continuous arterial spin labeling (pCASL) and blood oxygen level dependent (BOLD) fMRI techniques. MATERIALS AND

methodsSixteen healthy volunteers (age: 37.8±14.3years; 6 women and 10 men; education attainment: 17±2.1years) were recruited and completed a 5% CO2 gas-mixture breathing paradigm at 3T field strength. ASL and BOLD images were acquired for CVR determination assuming that mild hypercapnia does not affect the cerebral metabolic rate of oxygen. Both CVR quantifications were derived as the ratio of the fractional cerebral blood flow (CBF) or BOLD signal change over the change in end-tidal CO2 pressure.

resultsThe absolute CBF, BOLD and CVR measures were consistent with literature values. CBF derived CVR was 5.11±0.87%/mmHg in gray matter (GM) and 4.64±0.37%/mmHg in parenchyma. BOLD CVR was 0.23±0.04%/mmHg and 0.22±0.04%/mmHg for GM and parenchyma respectively. The most significant correlations between BOLD and CBF-based CVRs were also in GM structures, with greater vascular response in occipital cortex than in frontal and parietal lobes (6.8%/mmHg versus 4.5%/mmHg, 50% greater). Parenchymal BOLD CVR correlated significantly with the fractional change in CBF in response to hypercapnia (r=0.61, P=0.01), suggesting the BOLD response to be significantly flow driven. GM CBF decreased with age in room air (-5.58mL/100g/min per decade for GM; r=-0.51, P=0.05), but there was no association of CBF with age during hypercapnia. A trend toward increased pCASL CVR with age was observed, scaling as 0.64%/mmHg per decade for GM.

conclusionConsistent with previously reported CVR values, our results suggest that BOLD and CBF CVR techniques are complementary to each other in evaluating neuronal and vascular underpinning of hemodynamic processes.

Indexed as

AdultBlood Flow VelocityBrainCerebrovascular CirculationFemaleHumansImage Processing, Computer-AssistedMagnetic Resonance ImagingMaleSpin LabelsSpin LabelsArterial spin labelingBOLDCerebral blood flowCerebrovascular reactivityHypercapnia-based fMRI calibrationNeurovascular coupling

Identifiers

PMID25708263
PMCPMC4426232
OpenAlexW2058890752

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.