Evidence map›Paper›PMID 24594624›Full record

Trial reportJournal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism2014

In vivo assessment of human brainstem cerebrovascular function: a multi-inversion time pulsed arterial spin labelling study.

Esther A H Warnert, Ashley D Harris, Kevin Murphy, Neeraj Saxena, Neeta Tailor, Nigel S Jenkins, Judith E Hall, Richard G Wise

Open access · hybridAbstract readClinical Trial
In one paragraph

Trial report in Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
0.8field-weighted citation impact, top 25% 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

6 citing papers in PubMed, 7 citations in OpenAlex.

  1. Quantitative Total-Body Imaging of Blood Flow with High-Temporal-Resolution Early DynamicJournal of nuclear medicine : official publication, Society of Nuclear Medicine · 2025
    Article
  2. Review
  3. Article
  4. The major cerebral arteries proximal to the Circle of Willis contribute to cerebrovascular resistance in humans.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2016
    Article
  5. The cumulative influence of hyperoxia and hypercapnia on blood oxygenation and R*₂.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2015
    Article
  6. Noninvasive assessment of arterial compliance of human cerebral arteries with short inversion time arterial spin labeling.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2015
    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

8 authors at 1 institution in 2 countries.

Esther A H WarnertCardiff University Brain Research and Imaging Centre (CUBRIC), School of Psychology, Cardiff University, Cardiff, UK.
Ashley D Harris1] Cardiff University Brain Research and Imaging Centre (CUBRIC), School of Psychology, Cardiff University, Cardiff, UK [2] Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University, Baltimore, Maryland, USA [3] F.M. Kirby Center for Functional Brain Imaging, Kennedy Krieger Institute, Baltimore, Maryland, USA.
Kevin MurphyCardiff University Brain Research and Imaging Centre (CUBRIC), School of Psychology, Cardiff University, Cardiff, UK.
Neeraj SaxenaDepartment of Anaesthetics and Intensive Care Medicine, School of Medicine, Cardiff University, Cardiff, UK.
Neeta TailorDepartment of Anaesthetics and Intensive Care Medicine, School of Medicine, Cardiff University, Cardiff, UK.
Nigel S JenkinsDepartment of Anaesthetics and Intensive Care Medicine, School of Medicine, Cardiff University, Cardiff, UK.
Judith E HallDepartment of Anaesthetics and Intensive Care Medicine, School of Medicine, Cardiff University, Cardiff, UK.
Richard G WiseCardiff University Brain Research and Imaging Centre (CUBRIC), School of Psychology, Cardiff University, Cardiff, UK.
Cardiff University · GB

Funding

Wellcome Trust 090199
6 · The paper itself

Abstract

The brainstem (BS) is involved in critical physiologic processes, including control of cardiovascular and respiratory functions. This study implements a multi-inversion time pulsed arterial spin labelling (MTI PASL) imaging sequence that addresses the challenges of BS imaging and aims to measure normal and elevated BS perfusion in healthy volunteers. An initial experiment was performed to obtain the kinetic curve of the label in the BS and consequently to estimate the label arrival times and tissue perfusion in seven participants. A second experiment estimated the BS cerebral vascular reactivity (CVR) to hypercapnia in 10 participants. Images were acquired with a gradient-echo sequence with two spiral interleaves and short echo time (TE=2.7 ms). Data were analyzed with a two-compartment model, including a tissue and arterial component. In both experiments, perfusion in the BS was significantly lower than in cortical gray matter (repeated measures analysis of variance (RM-ANOVA), P<0.05), which is as expected since the BS consists of gray and white matter, the latter typically showing lower perfusion. The BS CVR found here is comparable to previous reports obtained with positron emission tomography (PET) imaging. Multi-inversion time pulsed ASL in combination with a two-compartment signal model can be used to assess BS perfusion and CVR.

Indexed as

Magnetic Resonance AngiographyPositron-Emission TomographyAdultBrain StemCerebrovascular CirculationFemaleHumansMaleRadiography

Identifiers

PMID24594624
PMCPMC4050237
OpenAlexW2088679024

What OpenQuestion holds

Textmetadata
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.