Evidence map›Paper›PMID 32095541›Full record

ArticleTechnical innovations & patient support in radiation oncology2019

Assessment of contour variability in target volumes and organs at risk in lung cancer radiotherapy.

Yatman Tsang, Peter Hoskin, Emiliano Spezi, David Landau, Jason Lester, Elizabeth Miles, John Conibear

Abstract read
In one paragraph

Article in Technical innovations & patient support in radiation oncology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing 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

15 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Recognising the challenges of implementing multi-centre adaptive plan of the day radiotherapy.Technical innovations & patient support in radiation oncology · 2022
    Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Contrast enhanced oesophageal avoidance for stereotactic body radiotherapy: Barium vs. Gastrografin.Technical innovations & patient support in radiation oncology · 2019
    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

7 authors.

Yatman TsangNIHR Radiotherapy Trials Quality Assurance Group, Mount Vernon Cancer Centre, Rickmansworth Rd, Northwood HA6 2RN, UK.
Peter HoskinNIHR Radiotherapy Trials Quality Assurance Group, Mount Vernon Cancer Centre, Rickmansworth Rd, Northwood HA6 2RN, UK.
Emiliano SpeziDept. of Medical Physics, Velindre Cancer Centre, Cardiff, UK.
David LandauDept. of Clinical Oncology, Guy's and St. Thomas' Hospital, London SE1 7EH, UK.
Jason LesterDept. of Clinical Oncology, Velindre Cancer Centre, Velindre Road, Cardiff CF14 2TL, UK.
Elizabeth MilesNIHR Radiotherapy Trials Quality Assurance Group, Mount Vernon Cancer Centre, Rickmansworth Rd, Northwood HA6 2RN, UK.
John ConibearDept. of Clinical Oncology, St. Bartholomew's Hospital, West Smithfield, London EC1A 7BE, UK.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimsThis study aimed to examine whether any significant differences existed in trial protocol compliance in target volumes (TV) and organs at risk (OARs) contouring amongst clinical oncologists specialised in lung cancer radiotherapy. MATERIALS/

methodsTwo lung radiotherapy trials that require all prospective investigators to submit pre-trial outlining quality assurance (QA) benchmark cases were selected. The contours from the benchmark cases were compared against a set of reference contours which were defined by the trial management group (TMG). In order to quantify the degree of variation in TV and OARs contouring, the matching index (MI), Dice coefficient (DICE), Jaccard index (JI), Van't Riet Index and geographical miss index (GMI) were calculated.

resultsA total of 198 structures contoured by 21 clinicians were collected from the outlining benchmark cases. There were 40 clinical target volumes (CTV), 32 spinal cord, 36 oesophagus, 36 heart and 54 lungs volumes included in the study. Analysis of the pre-trial benchmark cases revealed statistically significant differences (p ≤ 0.05) in trial protocol compliances between clinical oncologists' target volume and organs at risk contours. Our results demonstrated that the lung contours had the highest level of conformity, followed by heart, CTV, spinal cord and oesophagus respectively.

conclusionsThis study showed that there was a statistically significant difference in trial protocol compliance for lung clinical oncologists' TV and OARs contouring within the pre-trial QA benchmark cases. Trial protocol compliances of TV and OARs delineation can be identified through assessing outlining QA benchmark cases.

Indexed as

Contouring variabilityLung radiotherapyTrials quality assurance

Identifiers

PMID32095541
PMCPMC7033767

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.