Evidence map›Paper›PMID 33458333›Full record

ArticlePhysics and imaging in radiation oncology2020

Tumor-site specific geometric distortions in high field integrated magnetic resonance linear accelerator radiotherapy.

Signe Winther Hasler, Uffe Bernchou, Anders Bertelsen, Elisabeth van Veldhuizen, Tine Schytte, Vibeke Nordmark Hansen, Carsten Brink, Faisal Mahmood

Abstract read
In one paragraph

Article in Physics and imaging in radiation oncology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing 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

4 citing papers in PubMed.

  1. Review
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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

8 authors.

Signe Winther HaslerLaboratory of Radiation Physics, Odense University Hospital, Kløvervænget 19, 5000 Odense C, Denmark.
Uffe BernchouLaboratory of Radiation Physics, Odense University Hospital, Kløvervænget 19, 5000 Odense C, Denmark.
Anders BertelsenLaboratory of Radiation Physics, Odense University Hospital, Kløvervænget 19, 5000 Odense C, Denmark.
Elisabeth van VeldhuizenLaboratory of Radiation Physics, Odense University Hospital, Kløvervænget 19, 5000 Odense C, Denmark.
Tine SchytteDepartment of Oncology, Odense University Hospital, Kløvervænget 19, 5000 Odense C, Denmark.
Vibeke Nordmark HansenLaboratory of Radiation Physics, Odense University Hospital, Kløvervænget 19, 5000 Odense C, Denmark.
Carsten BrinkLaboratory of Radiation Physics, Odense University Hospital, Kløvervænget 19, 5000 Odense C, Denmark.
Faisal MahmoodLaboratory of Radiation Physics, Odense University Hospital, Kløvervænget 19, 5000 Odense C, Denmark.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Magnetic resonance imaging (MRI) has exquisite soft-tissue contrast and is the foundation for image guided radiotherapy (IGRT) with integrated magnetic resonance linacs. However, MRI suffers from geometrical distortions. In this study the MRI system- and patient-induced geometric distortion at four different tumor-sites was investigated: adrenal gland (7 patients), liver (4 patients), pancreas (6 patients), prostate (20 patients). Maximum level of total distortion within the gross-tumor-volume (GTV) was 0.96 mm with no significant difference between abdominal patients (adrenal gland, liver, pancreas) and pelvic patients (prostate). Total tumor-site specific distortion depended on location in the field-of-view and increased with the distance to MRI iso-center.

Indexed as

Adaptive radiotherapyGeometric distortionMR guided radiotherapyMRIMR-linacQA

Identifiers

PMID33458333
PMCPMC7807890

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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.