Evidence map›Paper›PMID 39559486›Full record

ArticlePhysics and imaging in radiation oncology2024

Comparing robust proton versus online adaptive photon radiotherapy for short-course treatment of rectal cancer.

Johanna A Hundvin, Unn Hege Lilleøren, Alexander Valdman, Bruno Sorcini, John Alfred Brennsæter, Camilla G Boer, Helge E S Pettersen, Kathrine R Redalen, Inger Marie Løes, Sara Pilskog

Abstract read
In one paragraph

Article in Physics and imaging in radiation oncology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. 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

10 authors.

Johanna A HundvinDepartment of Oncology and Medical Physics, Haukeland University Hospital, Bergen, Norway.
Unn Hege LilleørenDepartment of Oncology and Medical Physics, Haukeland University Hospital, Bergen, Norway.
Alexander ValdmanDepartment of Radiation Oncology, Karolinska University Hospital, Stockholm, Sweden.
Bruno SorciniDepartment of Radiotherapy Physics and Engineering, Medical Physics and Nuclear Medicine, Karolinska University Hospital, Stockholm, Sweden.
John Alfred BrennsæterDepartment of Oncology and Medical Physics, Haukeland University Hospital, Bergen, Norway.
Camilla G BoerDepartment of Oncology and Medical Physics, Haukeland University Hospital, Bergen, Norway.
Helge E S PettersenDepartment of Oncology and Medical Physics, Haukeland University Hospital, Bergen, Norway.
Kathrine R RedalenDepartment of Physics, Norwegian University of Science and Technology, Trondheim, Norway.
Inger Marie LøesDepartment of Oncology and Medical Physics, Haukeland University Hospital, Bergen, Norway.
Sara PilskogDepartment of Oncology and Medical Physics, Haukeland University Hospital, Bergen, Norway.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background and purpose: Image-guided proton beam therapy (IG-PBT) and cone-beam CT (CBCT)-based online adaptive photon radiotherapy (oART) have potentials to restrict radiation toxicity. They are both hypothesised to reduce therapy limiting bowel toxicity in the multimodality treatment of locally advanced rectal cancer (LARC). This study aimed to quantify the difference in relevant dose-volume metrics for these modalities. Material and Methods: Six-degrees-of-freedom IG-PBT and oART short-course radiotherapy (SCRT) were simulated for 18 LARC patients. Relative biological effectiveness (RBE) was 1.1 for IG-PBT. Delivered dose was evaluated using post-CBCTs. Target coverage was considered robust if average dose to 99% of the clinical target volume was Results: Target coverage was robust in all patients for oART and all but one patient for IG-PBT. For the main OARs, IG-PBT increased the volume exposed to Conclusion: IG-PBT and oART delivered comparable and satisfying target coverage in SCRT for LARC with similar estimated risk of severe bowel toxicity. Volumes of OAR exposed to 15 Gy (RBE) or more were reduced by oART, while IG-PBT reduced the volumes receiving doses below this level.

Indexed as

Bowel toxicityCBCTOnline adaptationProton beam therapyRAPIDORectal cancer

Identifiers

PMID39559486
PMCPMC11570970

What OpenQuestion holds

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Registered trials

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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.