ArticleReports of practical oncology and radiotherapy : journal of Greatpoland Cancer Center in Poznan and Polish Society of Radiation Oncology2022
A single centre evaluation of the 2019 UK SABR consortium guidelines for primary lung cancer: correlation between Prescription Dose Spillage and inverse Paddick Conformity Index.
Article in Reports of practical oncology and radiotherapy : journal of Greatpoland Cancer Center in Poznan and Polish Society of Radiation Oncology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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.
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.
Who cites it
1 citing paper in PubMed.
- Potential of margin reduction for cervical cancer radiotherapy in an online adaptive image-guided workflow.Physics and imaging in radiation oncology · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background: The aim of the study was to determine level of agreement between RTOG Conformity Index (RTOG-CI), Paddick Conformity Index (PCI) and Prescription Dose Spillage (PDS) in describing lung stereotactic ablative radiotherapy (SABR) plan conformity; to elucidate any limitations, in practice, of PCI and PDS. International Commission on Radiation Units and Measurements report 91 (ICRU 91) aimed to reduce inconsistencies in dose prescription and normalisation between centres by specifying SABR reporting rules, and suggested using PCI. UK SABR Consortium 2019 guidelines adopted PDS to measure plan quality, but not the PCI. Materials and methods: 51 consecutive lung SABR plans received 54 Gy in 3 fractions (54 Gy/3 Fr), 55 Gy/5 Fr or 60 Gy/8 Fr. Plans were developed according to 2016 UK SABR consortium guidelines, which did not specify PCI or PDS; these values were retrospectively calculated. As PCI varies from 0 to an optimum of 1, inverse PCI (invPCI) was used for calculations. Results: PTV-adjusted PDS tolerances were met in 80.4% of studied plans. A near-perfect positive correlation between invPCI and PDS (R2 = 0.978) was found - stronger than between invPCI and the previously-used RTOG-CI (R2 = 0.915). Conclusions: The strong invPCI-PDS correlation is likely dependent on adequate PTV coverage, present in our cohort. This supports the UK SABR Consortium's adoption of PDS provided PTV coverage is ensured. Plan conformity should be confirmed by visual slice-by-slice review.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.