Evidence map›Paper›PMID 38227140›Full record

ArticlePhysical and engineering sciences in medicine2024

Potential dosimetric error in the adaptive workflow of a 1.5 T MR-Linac from patient movement relative to immobilisation systems.

Min Liu, Bin Tang, Lucia Clara Orlandini, Jie Li, Xianliang Wang, Qian Peng, David Thwaites

Open access · hybridAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Physical and engineering sciences in medicine, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
0.6field-weighted citation impact, top 39% 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

2 citing papers in PubMed, 1 citations in OpenAlex.

  1. Article
  2. 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 at 2 institutions in 3 countries.

Min LiuRadiation Oncology Department, Sichuan Cancer Hospital & Institute, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, China.ORCID https://orcid.org/0009-0007-6198-5375
Bin TangRadiation Oncology Department, Sichuan Cancer Hospital & Institute, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, China.ORCID https://orcid.org/0000-0001-6920-6478
Lucia Clara OrlandiniRadiation Oncology Department, Sichuan Cancer Hospital & Institute, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, China.ORCID https://orcid.org/0000-0002-7033-9689
Jie LiRadiation Oncology Department, Sichuan Cancer Hospital & Institute, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, China. jie.li@yeah.net.ORCID https://orcid.org/0000-0001-7163-3778
Xianliang WangRadiation Oncology Department, Sichuan Cancer Hospital & Institute, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, China. wangxianliang@scszlyy.org.cn.ORCID https://orcid.org/0000-0003-3928-9983
Qian PengRadiation Oncology Department, Sichuan Cancer Hospital & Institute, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, China.ORCID https://orcid.org/0000-0001-5537-0656
David ThwaitesInstitute of Medical Physics, School of Physics, University of Sydney, Sydney, NSW, Australia.ORCID https://orcid.org/0000-0002-9633-6259
University of Electronic Science and Technology of China · CNThe University of Sydney · AU

Funding

Medical Engineering Innovation Fund for Cancer ZYGX2021YGCX002Natural Science Foundation of Sichuan Province 2023NSFSC0711
6 · The paper itself

Abstract

In magnetic resonance- (MR-) based adaptive workflows for an MR-linac, the treatment plan is optimized and recalculated online using the daily MR images. The Unity MR-linac is supplied with a patient positioning device (ppd) using pelvic and abdomen thermoplastic masks attached to a board with high-density components. This study highlights the dosimetric effect of using this in such workflows when there are relative patient-ppd displacements, as these are not visualized on MR imaging and the treatment planning system assumes the patient is fixed relative to the ppd. The online adapted plans of two example rectum cancer patients treated at a Unity MR-linac were perturbed by introducing relative patient-ppd displacements, and the effect was evaluated on plan dosimetry. Forty-eight perturbed clinical adapted plans were recalculated, based on online MR-based synthetic computed tomography, and compared with the original plans, using dose-volume histogram parameters and gamma analysis. The target volume covered by the prescribed dose (

Indexed as

Particle AcceleratorsRadiotherapy Planning, Computer-AssistedHumansMagnetic Resonance ImagingRadiometryWorkflowAdaptive radiotherapyMR-linacPatient positioning systemsRectum cancerThermoplastic masks

Identifiers

PMID38227140
PMCPMC10963571
OpenAlexW4390912224

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.