Evidence map›Paper›PMID 33373659›Full record

ArticleInternational journal of radiation oncology, biology, physics2021

Small Animal IMRT Using 3D-Printed Compensators.

Gage Redler, Erik Pearson, Xinmin Liu, Inna Gertsenshteyn, Boris Epel, Charles Pelizzari, Bulent Aydogan, Ralph Weichselbaum, Howard J Halpern, Rodney D Wiersma

Erratum issuedOpen access · greenAbstract read
In one paragraph

Article in International journal of radiation oncology, biology, physics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
2.1field-weighted citation impact, top 13% 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

11 citing papers in PubMed, 17 citations in OpenAlex.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors at 3 institutions in 1 country.

Gage RedlerMoffitt Cancer Center, Department of Radiation Oncology, Tampa, Florida. Electronic address: Gage.Redler@moffitt.org.
Erik PearsonDepartment of Radiation and Cellular Oncology, University of Chicago, Chicago, Illinois.
Xinmin LiuDepartment of Radiation and Cellular Oncology, University of Chicago, Chicago, Illinois.
Inna GertsenshteynDepartment of Radiation and Cellular Oncology, University of Chicago, Chicago, Illinois.
Boris EpelDepartment of Radiation and Cellular Oncology, University of Chicago, Chicago, Illinois.
Charles PelizzariDepartment of Radiation and Cellular Oncology, University of Chicago, Chicago, Illinois.
Bulent AydoganDepartment of Radiation and Cellular Oncology, University of Chicago, Chicago, Illinois.
Ralph WeichselbaumDepartment of Radiation and Cellular Oncology, University of Chicago, Chicago, Illinois.
Howard J HalpernDepartment of Radiation and Cellular Oncology, University of Chicago, Chicago, Illinois.
Rodney D WiersmaDepartment of Radiation Oncology, University of Pennsylvania, Philadelphia, Pennsylvania.
University of Chicago · USMoffitt Cancer Center · USUniversity of Pennsylvania · US

Funding

VIRAL ONCOLOGY CORE FACILITYP30CA014599 · NCI · UNIVERSITY OF CHICAGO · PI CHIEN-MIN KAO · 1985 to 2026
$122.1M
Very Low Frequency EPR Imaging in Vivo Phisiology P41 EB02034P41EB002034 · NIBIB · UNIVERSITY OF CHICAGO · PI HALPERN, HOWARD J · 2003 to 2017
$16.1M
Radiation Biology of EPR Oxygen ImagesR01CA098575 · NCI · UNIVERSITY OF CHICAGO · PI HALPERN, HOWARD J · 2003 to 2022
$4.5M
PSMA-targeted AuNPs for MR guided radiotherapy and radiosensitizationR01CA260847 · NCI · CASE WESTERN RESERVE UNIVERSITY · PI AYDOGAN, BULENT, BASILION, JAMES PETER · 2021 to 2024
$2.6M
Optimization of Cancer Therapy guided by oxygen, pH, thiol and other parametric imagesR50CA211408 · NCI · UNIVERSITY OF CHICAGO · PI EPEL, BORIS · 2016 to 2020
$637k
NCI NIH HHS P30 CA014599NCI NIH HHS R01 CA098575NCI NIH HHS R01 CA260847NCI NIH HHS R50 CA211408NIBIB NIH HHS P41 EB002034
6 · The paper itself

Abstract

purposePreclinical radiation replicating clinical intensity modulated radiation therapy (IMRT) techniques can provide data translatable to clinical practice. For this work, treatment plans were created for oxygen-guided dose-painting in small animals using inverse-planned IMRT. Spatially varying beam intensities were achieved using 3-dimensional (3D)-printed compensators. METHODS AND MATERIALS: Optimized beam fluence from arbitrary gantry angles was determined using a verified model of the XRAD225Cx treatment beam. Compensators were 3D-printed with varied thickness to provide desired attenuation using copper/polylactic-acid. Spatial resolution capabilities were investigated using printed test-patterns. Following American Association of Physicists in Medicine TG119, a 5-beam IMRT plan was created for a miniaturized (∼1/8th scale) C-shape target. Electron paramagnetic resonance imaging of murine tumor oxygenation guided simultaneous integrated boost (SIB) plans conformally treating tumor to a base dose (Rx

resultsResolution test-patterns demonstrate practical printer resolution of ∼0.7 mm, corresponding to 1.0 mm bixels at the isocenter. The miniaturized C-shape plan provides planning target volume coverage (V

conclusionsThis simple and cost-effective approach using 3D-printed compensators for small-animal IMRT provides a methodology enabling preclinical studies that can be readily translated into the clinic. The presented oxygen-guided dose-painting demonstrates that this methodology will facilitate studies driving much needed biologic personalization of radiation therapy for improvements in patient outcomes.

Indexed as

Printing, Three-DimensionalAnimalsCopperElectron Spin Resonance SpectroscopyFibrosarcomaMiceOrgan Sparing TreatmentsOxygenPhantoms, ImagingPolyestersProof of Concept StudyRadiotherapy, Intensity-ModulatedRadiotherapy Planning, Computer-AssistedTumor HypoxiaX-Ray FilmCopperOxygenPolyesterspoly(lactide)

Identifiers

PMID33373659
PMCPMC8122034
OpenAlexW3114204546

What OpenQuestion holds

Textmetadata
LicenceTDM
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.