Evidence map›Paper›PMID 29777595›Full record

ArticleMedical physics2018

A ring-based compensator IMRT system optimized for low- and middle-income countries: Design and treatment planning study.

Jonathon Van Schelt, Daniel L Smith, Nicholas Fong, Dolla Toomeh, Patricia A Sponseller, Derek W Brown, Meghan W Macomber, Nina A Mayr, Shilpen Patel, Adam Shulman and 3 more

Abstract read
In one paragraph

Article in Medical physics, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing 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

8 citing papers in PubMed.

  1. Article
  2. Radiotherapy medical physics in the Philippines: A contemporary overview.Journal of applied clinical medical physics · 2025
    Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Cobalt compensator-based IMRT device: A treatment planning study of head and neck cases.Physica medica : PM : an international journal devoted to the applications of physics to medicine and biology : official journal of the Italian Association of Biomedical Physics (AIFB) · 2023
    Article
  8. 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

13 authors.

Jonathon Van ScheltDepartment of Radiation Oncology, University of Washington Medical Center, Seattle, WA, 98195, USA.
Daniel L SmithDepartment of Radiation Oncology, University of Washington Medical Center, Seattle, WA, 98195, USA.
Nicholas FongDepartment of Radiation Oncology, University of Washington Medical Center, Seattle, WA, 98195, USA.
Dolla ToomehDepartment of Radiation Oncology, University of Washington Medical Center, Seattle, WA, 98195, USA.
Patricia A SponsellerDepartment of Radiation Oncology, University of Washington Medical Center, Seattle, WA, 98195, USA.
Derek W BrownDepartment of Radiation Medicine and Applied Sciences, University of California, San Diego, La Jolla, CA, 92093, USA.
Meghan W MacomberDepartment of Radiation Oncology, University of Washington Medical Center, Seattle, WA, 98195, USA.
Nina A MayrDepartment of Radiation Oncology, University of Washington Medical Center, Seattle, WA, 98195, USA.
Shilpen PatelGrail Inc., Menlo Park, CA, 940258, USA.
Adam ShulmanRadiating Hope, Midvale, UT, 84106, USA.
G V SubrahmanyamPanacea Medical Technologies Pvt. Ltd, Bangalore, Karnataka, 560 066, India.
K N GovindarajanPSG Hospital, Coimbatore, Tamil Nadu, 641 004, India.
Eric C FordDepartment of Radiation Oncology, University of Washington Medical Center, Seattle, WA, 98195, USA.

Funding

A cost-effective radiation treatment delivery system for the low- and middle-income countriesUH3CA211310 · NCI · UNIVERSITY OF WASHINGTON · PI FORD, ERIC C · 2019 to 2022
$2.6M
A cost-effective radiation treatment delivery system for the low- and middle-income countriesUG3CA211310 · NCI · UNIVERSITY OF WASHINGTON · PI FORD, ERIC C · 2017 to 2018
$820k
NCI NIH HHS UG3 CA211310NCI NIH HHS UH3 CA211310
6 · The paper itself

Abstract

purposeWe propose a novel compensator-based IMRT system designed to provide a simple, reliable, and cost-effective adjunct technology, with the goal of expanding global access to advanced radiotherapy techniques. The system would employ easily reusable tungsten bead compensators that operate independent of a gantry (e.g., mounted in a ring around the patient). Thereby the system can be retrofitted to existing linac and cobalt teletherapy units. This study explores the quality of treatment plans from the proposed system and the dependence on associated design parameters.

methodsWe considered

resultsThe

conclusionsThe novel ring-compensator IMRT system can produce plans of comparable quality to standard 6 MV-MLC systems. Even when

Indexed as

Developing CountriesCost-Benefit AnalysisEquipment DesignMonte Carlo MethodRadiometryRadiotherapy DosageRadiotherapy, Intensity-ModulatedRadiotherapy Planning, Computer-Assisted60-cobaltcompensatorglobal oncologyIMRT

Identifiers

PMID29777595
PMCPMC8522994

What OpenQuestion holds

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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.