Evidence map›Paper›PMID 34520675›Full record

ArticleThe British journal of radiology2021

Streamlining the image-guided radiotherapy process for proton beam therapy.

Lucy Siew Chen Davies, Louise McHugh, Marianne Aznar, Josh Lindsay, Cynthia Eccles

Open access · bronzeAbstract read
In one paragraph

Article in The British journal of radiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed, 1 pooled it
0.4field-weighted citation impact, top 34% 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

4 citing papers in PubMed, 1 synthesis or guideline pooled it, 4 citations in OpenAlex.

  1. A systematic review of volumetric image guidance in proton therapy.Physical and engineering sciences in medicine · 2023
    Pooled it
  2. Insights from initial experience for nasopharyngeal carcinoma patients treated with proton therapy.Technical innovations & patient support in radiation oncology · 2025
    Article
  3. Article
  4. Review
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 2 institutions in 1 country.

Lucy Siew Chen DaviesDepartment of Radiotherapy, The Christie NHS Foundation Trust, Manchester, UK.ORCID 0000-0001-5955-548X
Louise McHughDepartment of Radiotherapy, The Christie NHS Foundation Trust, Manchester, UK.
Marianne AznarDivision of Cancer Sciences, School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK.
Josh LindsayDivision of Cancer Sciences, School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK.
Cynthia EcclesDepartment of Radiotherapy, The Christie NHS Foundation Trust, Manchester, UK.ORCID 0000-0002-5445-5428
Manchester Academic Health Science Centre · GBThe Christie NHS Foundation Trust · GB

Funding

Cancer Research UK 28701
6 · The paper itself

Abstract

objectivesThis work evaluated the on-treatment imaging workflow in the UK's first proton beam therapy (PBT) centre, with a view to reducing times and unnecessary imaging doses to patients.

methodsImaging dose and timing data from the first 20 patients (70% paediatrics, 30% TYA/adult) treated with PBT using the initial image-guided PBT (IGPBT) workflow of a 2-dimensional kilo-voltage (2DkV), followed by cone-beam computed-tomography (CBCT) and repeat 2DkV was included. Pearson correlations and Bland-Altman analysis were used to describe correlations between 2DkV and CBCT images to determine if any images were superfluous.

results229 treatment sessions were evaluated. Patient repositioning following the initial 2DkV (i2DkV) was required on 19 (8.3%) fractions. This three-step process resulted in an additional mean imaging dose of 3.4 mGy per patient, and 5.1 minutes on the treatment bed for the patient, over a whole course of PBT, compared to a two-step workflow (removing the i2DkV image). Correspondence between the mean displacements from i2DkV and CBCT was high, with

conclusionsRemoving the i2DkV, streamlining to a two-step workflow, would reduce treatment times and imaging dose, and has been implemented as standard verification protocol. For challenging cases ( ADVANCES IN KNOWLEDGE: This is the first report assessing a preliminary imaging protocol in PBT in the UK and determining a way to reduce dose and time, which ultimately benefits the patient.

Indexed as

WorkflowAdolescentAdultAgedAged, 80 and overChildChild, PreschoolCone-Beam Computed TomographyFemaleHumansMaleMiddle AgedNeoplasmsProton TherapyRadiotherapy DosageRadiotherapy, Image-Guided

Identifiers

PMID34520675
PMCPMC8631028
OpenAlexW3200652592

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.