Evidence map›Paper›PMID 32500276›Full record

Trial reportNeuroradiology2020

Qualitative and quantitative analysis of diffusion-weighted brain MR imaging in comatose survivors after cardiac arrest.

Simon Vanden Berghe, Sarah Cappelle, Frederik De Keyzer, Ron Peeters, Kristof Coursier, Arno Depotter, Sofie Van Cauter, Koen Ameloot, Jo Dens, Robin Lemmens and 2 more

Abstract readMulticenter StudyRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in Neuroradiology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
–field-weighted citation impact
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

7 citing papers in PubMed.

  1. Review
  2. Observational
  3. Article
  4. Review
  5. Article
  6. Article
  7. 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

12 authors.

Simon Vanden BergheDepartment of Radiology, University Hospitals Leuven, KU Leuven, Leuven, Belgium.
Sarah CappelleDepartment of Radiology, University Hospitals Leuven, KU Leuven, Leuven, Belgium.
Frederik De KeyzerDepartment of Radiology, University Hospitals Leuven, KU Leuven, Leuven, Belgium.
Ron PeetersDepartment of Radiology, University Hospitals Leuven, KU Leuven, Leuven, Belgium.
Kristof CoursierDepartment of Radiology, University Hospitals Leuven, KU Leuven, Leuven, Belgium.
Arno DepotterFaculty of Medicine, KU Leuven, Leuven, Belgium.
Sofie Van CauterDepartment of Radiology, University Hospitals Leuven, KU Leuven, Leuven, Belgium.
Koen AmelootDepartment of Cardiology, University Hospitals Leuven, KU Leuven, Leuven, Belgium.
Jo DensDepartment of Cardiology, Ziekenhuis Oost-Limburg, Genk, Belgium.
Robin LemmensDepartment of Neurology, University Hospitals Leuven, KU Leuven, Leuven, Belgium.
Stefan JanssensDepartment of Cardiology, University Hospitals Leuven, KU Leuven, Leuven, Belgium.
Philippe DemaerelDepartment of Radiology, University Hospitals Leuven, KU Leuven, Leuven, Belgium. philippe.demaerel@uzleuven.be.ORCID http://orcid.org/0000-0002-6678-0519

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe aim of this study is to compare a qualitative and a quantitative assessment of brain diffusion-weighted imaging (DWI) in predicting outcome of comatose patients after cardiac arrest (CA).

methodsTwo observers used a scoring template to analyze the DWI of 75 patients. A total of 13 regions were scored from 0 to 3 (0 = normal, 1 = probably normal, 2 = probably abnormal, 3 = definitely abnormal). The total cerebral cortex (TCC), the total deep grey nuclei (TDGN), the total brain stem, the total cerebellum, and the total brain score were calculated. Intra- and inter-observer variability were tested. The mean whole brain apparent diffusion coefficient (ADC) values and percentage of voxels below a specific ADC value cut-off were calculated. The data were correlated with clinical outcome (cerebral performance category score after 180 days, dichotomized in a score 1-2 with favorable outcome and score 3-5 with unfavorable outcome) using ROC analysis.

resultsIntra-observer variability was excellent for the TCC score (ICC 0.95 and 0.86) and the TDGN score (ICC 0.89 and 0.75). Inter-observer variability was good to excellent for total cerebral cortex score and total deep grey nuclei score in both the first (ICC 0.78 and 0.69) and third (ICC 0.86 and 0.83) image assessment. TCC and TDGN score show the best correlation with clinical outcome (highest AUC values 0.87 and 0.87). Quantitative parameters did not show good correlation with clinical outcome (AUC values 0.57 and 0.60).

conclusionA qualitative assessment of brain DWI using a scoring template provides useful data regarding patient outcome while quantitative data appeared less reliable.

Indexed as

Heart ArrestAgedBelgiumComaDiffusion Magnetic Resonance ImagingFemaleHumansMaleMiddle AgedNeurologic ExaminationPrognosisProspective StudiesSensitivity and SpecificitySurvivorsBrainCerebral cortexDiffusion magnetic resonance imagingHeart arrestIschemia

Identifiers

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.