Evidence map›Paper›PMID 25708992›Full record

ArticleRadiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology2015

Robust optimization in intensity-modulated proton therapy to account for anatomy changes in lung cancer patients.

Heng Li, Xiaodong Zhang, Peter Park, Wei Liu, Joe Chang, Zhongxing Liao, Steve Frank, Yupeng Li, Falk Poenisch, Radhe Mohan and 2 more

Open access · greenAbstract read
In one paragraph

Article in Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
6.7field-weighted citation impact, top 3% 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

36 citing papers in PubMed, 85 citations in OpenAlex.

  1. Ionizing radiation acoustic beam localization: one step towards "proton surgery".medRxiv : the preprint server for health sciences · 2026
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  6. Medical physics · 2024
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  16. Adaptive proton therapy.Physics in medicine and biology · 2021
    Review
  17. Anatomic changes in head and neck intensity-modulated proton therapy: Comparison between robust optimization and online adaptation.Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology · 2021
    Article
  18. 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

12 authors at 3 institutions in 1 country.

Heng LiDepartment of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA. Electronic address: hengli@mdanderson.org.
Xiaodong ZhangDepartment of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
Peter ParkDepartment of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
Wei LiuDepartment of Radiation Oncology, Mayo Clinic, Scottsdale, AZ, USA.
Joe ChangDepartment of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
Zhongxing LiaoDepartment of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
Steve FrankDepartment of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
Yupeng LiApplied Research, Varian Medical Systems, Palo Alto, CA, USA.
Falk PoenischDepartment of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
Radhe MohanDepartment of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
Michael GillinDepartment of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
Ronald ZhuDepartment of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
The University of Texas MD Anderson Cancer Center · USMayo Clinic in Arizona · USVarian Medical Systems (United States) · US

Funding

Statistics, Data Exchange, Management and SupportP01CA021239 · NCI · MASSACHUSETTS GENERAL HOSPITAL · PI DONG, LEI · 1985 to 2013
$28.3M
4D Robust Optimization in Intensity-Modulated Proton TherapyK25CA168984 · NCI · UNIVERSITY OF TX MD ANDERSON CAN CTR · PI LIU, WEI · 2012 to 2015
$450k
NCI NIH HHS K25 CA168984NCI NIH HHS P01 CA021239NCI NIH HHS P01CA021239
6 · The paper itself

Abstract

background and purposeRobust optimization for IMPT takes setup and range uncertainties into account during plan optimization. However, anatomical changes were not prospectively included. The purpose of this study was to examine robustness and dose variation due to setup uncertainty and anatomical change in IMPT of lung cancer. MATERIAL AND

methodsPlans were generated with multi-field optimization based on planning target volume (MFO-PTV) and worst-case robust optimization (MFO-RO) on simulation computed tomography scans (CT0) for nine patients. Robustness was evaluated on the CT0 by computing the standard deviation of DVH (SD-DVH). Dose variations calculated on weekly CTs were compared with SD-DVH. Equivalent uniform dose (EUD) change from the original plan on weekly dose was also calculated for both plans.

resultsSD-DVH and dose variation on weekly CTs were both significantly lower in the MFO-RO plans than in the MFO-PTV plans for targets, lungs, and the esophagus (p<0.05). When comparing EUD for ITV between weekly and planned dose distributions, three patients and 28% of repeated CTs for MFO-RO plans, and six patients and 44% of repeated CTs for MFO-PTV plans, respectively, showed an EUD change of >5%.

conclusionsRO in IMPT reduces the dose variation due to setup uncertainty and anatomy changes during treatment compared with PTV-based planning. However, dose variation could still be substantial; repeated imaging and adaptive planning as needed are highly recommended for IMPT of lung tumors.

Indexed as

HumansLung NeoplasmsProton TherapyRadiotherapy DosageRadiotherapy, Intensity-ModulatedRadiotherapy Planning, Computer-AssistedTomography, X-Ray ComputedUncertaintyAdaptive planningIMPTRobustness evaluationRobust optimization

Identifiers

PMID25708992
PMCPMC4400219
OpenAlexW2063903585

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.