Evidence map›Paper›PMID 34680269›Full record

ArticleCancers2021

Intra- and Interobserver Variability in Magnetic Resonance Imaging Measurements in Rectal Cancer Patients.

Peter Grimm, Martina Kastrup Loft, Claus Dam, Malene Roland Vils Pedersen, Signe Timm, Søren Rafael Rafaelsen

Open access · goldAbstract read
In one paragraph

Article in Cancers, 2021. 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
1.5field-weighted citation impact, top 17% 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, 16 citations in OpenAlex.

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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

6 authors at 2 institutions in 1 country.

Peter GrimmDepartment of Radiology, Vejle Hospital, University Hospital of Southern Denmark, 7100 Vejle, Denmark.ORCID 0000-0003-0927-4609
Martina Kastrup LoftDepartment of Radiology, Vejle Hospital, University Hospital of Southern Denmark, 7100 Vejle, Denmark.ORCID 0000-0003-3463-8574
Claus DamDepartment of Radiology, Vejle Hospital, University Hospital of Southern Denmark, 7100 Vejle, Denmark.
Malene Roland Vils PedersenDepartment of Radiology, Vejle Hospital, University Hospital of Southern Denmark, 7100 Vejle, Denmark.ORCID 0000-0001-5167-7968
Signe TimmDepartment of Regional Health Research, University of Southern Denmark, 5230 Odense, Denmark.
Søren Rafael RafaelsenDepartment of Radiology, Vejle Hospital, University Hospital of Southern Denmark, 7100 Vejle, Denmark.ORCID 0000-0001-5182-5545
University of Southern Denmark · DKVejle Sygehus · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Colorectal cancer is the second most common cancer in Europe, and accurate lymph node staging in rectal cancer patients is essential for the selection of their treatment. MRI lymph node staging is complex, and few studies have been published regarding its reproducibility. This study assesses the inter- and intraobserver variability in lymph node size, apparent diffusion coefficient (ADC) measurements, and morphological characterization among inexperienced and experienced radiologists. Four radiologists with different levels of experience in MRI rectal cancer staging analyzed 36 MRI scans of 36 patients with rectal adenocarcinoma. Inter- and intraobserver variation was calculated using interclass correlation coefficients and Cohens-kappa statistics, respectively. Inter- and intraobserver agreement for the length and width measurements was good to excellent, and for that of ADC it was fair to good. Interobserver agreement for the assessment of irregular border was moderate, heterogeneous signal was fair, round shape was fair to moderate, and extramesorectal lymph node location was moderate to almost perfect. Intraobserver agreement for the assessment of irregular border was fair to substantial, heterogeneous signal was fair to moderate, round shape was fair to moderate, and extramesorectal lymph node location was substantial to almost perfect. Our data indicate that subjective variables such as morphological characteristics are less reproducible than numerical variables, regardless of the level of experience of the observers.

Indexed as

interobserver variabilityintraobserver variabilitylymph node stagingradiologyrectal cancer

Identifiers

PMID34680269
PMCPMC8534180
OpenAlexW3207403075

What OpenQuestion holds

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LicenceCC BY
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.