Evidence map›Paper›PMID 26975495›Full record

ArticleThe British journal of radiology2016

Quantitative measurement of blood flow in paediatric brain tumours-a comparative study of dynamic susceptibility contrast and multi time-point arterial spin labelled MRI.

Rishma Vidyasagar, Laurence Abernethy, Barry Pizer, Shivaram Avula, Laura M Parkes

Open access · hybridAbstract read
In one paragraph

Article in The British journal of radiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
2.0field-weighted citation impact, top 15% 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, 1 synthesis or guideline pooled it, 18 citations in OpenAlex.

  1. Arterial Spin-Labeling in Children with Brain Tumor: A Meta-Analysis.AJNR. American journal of neuroradiology · 2018
    Pooled it
  2. Review
  3. Article
  4. Review
  5. Article
  6. Arterial Spin Labeling for Pediatric Central Nervous System Diseases: Techniques and Clinical Applications.Magnetic resonance in medical sciences : MRMS : an official journal of Japan Society of Magnetic Resonance in Medicine · 2023
    Article
  7. Review
  8. Multidelay ASL of the pediatric brain.The British journal of radiology · 2022
    Review
  9. Article
  10. Article
  11. Article
  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

5 authors at 3 institutions in 2 countries.

Rishma Vidyasagar1 Florey Institute of Neuroscience and Mental Health, Heidelberg, Melbourne, VIC, Australia.ORCID http://orcid.org/0000-0002-1484-4250
Laurence Abernethy3 Department of Radiology, Alder Hey Children's NHS Foundation Trust, Liverpool, UK.
Barry Pizer4 Department of Paediatric Oncology, Alder Hey Children's NHS Foundation Trust, Liverpool, UK.
Shivaram Avula3 Department of Radiology, Alder Hey Children's NHS Foundation Trust, Liverpool, UK.
Laura M Parkes5 Centre for Imaging Sciences, Faculty of Medicine and Human Sciences, University of Manchester, Manchester, UK.
Alder Hey Children's NHS Foundation Trust · GBThe University of Melbourne · AUUniversity of Manchester · GB

Funding

Medical Research Council G0501110Medical Research Council G1100781Medical Research Council MC_PC_12018
6 · The paper itself

Abstract

objectiveArterial spin-labelling (ASL) MRI uses intrinsic blood water to quantify the cerebral blood flow (CBF), removing the need for the injection of a gadolinium-based contrast agent used for conventional perfusion imaging such as dynamic susceptibility contrast (DSC). Owing to the non-invasive nature of the technique, ASL is an attractive option for use in paediatric patients. This work compared DSC and multi-timepoint ASL measures of CBF in paediatric brain tumours.

methodsPatients (n = 23; 20 low-grade tumours and 3 high-grade tumours) had DSC and multi-timepoint ASL with and without vascular crushers (VC). VC removes the contribution from larger vessel blood flow. Mean perfusion metrics were extracted from control and T1-enhanced tumour regions of interest (ROIs): arterial arrival time (AAT) and CBF from the ASL images with and without VC, relative cerebral blood flow (rCBF), relative cerebral blood volume, delay time (DT) and mean transit time (MTT) from the DSC images.

resultsSignificant correlations existed for: AAT and DT (r = 0.77, p = 0.0002) and CBF and rCBF (r = 0.56, p = 0.02) in control ROIs for ASL-noVC. No significant correlations existed between DSC and ASL measures in the tumour region. Significant differences between control and tumour ROI were found for MTT (p < 0.001) and rCBF (p < 0.005) measures.

conclusionSignificant correlations between ASL-noVC and DSC measures in the normal brain suggest that DSC is most sensitive to macrovascular blood flow. The absence of significant correlations within the tumour ROI suggests that ASL is sensitive to different physiological mechanisms compared with DSC measures. ADVANCES IN KNOWLEDGE: ASL provides information which is comparable with that of DSC in healthy tissues, but appears to reflect a different physiology in tumour tissues.

Indexed as

Blood Flow VelocityAdolescentBrain NeoplasmsChildChild, PreschoolFemaleHumansImage Interpretation, Computer-AssistedMagnetic Resonance AngiographyMaleNeovascularization, PathologicReproducibility of ResultsSensitivity and SpecificitySpin LabelsYoung AdultSpin Labels

Identifiers

PMID26975495
PMCPMC5258143
OpenAlexW2300837186

What OpenQuestion holds

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LicenceCC BY
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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.