Evidence map›Paper›PMID 32258121›Full record

Trial reportBioMed research international2020

Comparison of Dosimetric Gains Provided by Intensity-Modulated Radiotherapy, Volume-Modulated Arc Therapy, and Helical Tomotherapy for High-Grade Glioma.

Pei Liu, Gui Liu, Guihua Wang, Weibing Zhou, Yangqing Sun, Wen Chen, Qian Zeng, Jidong Hong, Qiongxuan Xie, Ludi Ou and 1 more

Open access · hybridAbstract readClinical TrialComparative Study
In one paragraph

Trial report in BioMed research international, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
2.8field-weighted citation impact, top 10% 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

12 citing papers in PubMed, 1 synthesis or guideline pooled it, 18 citations in OpenAlex.

  1. Pooled it
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  7. Assessment of dosimetric impact of interfractional 6D setup error in tongue cancer treated with IMRT and VMAT using daily kV-CBCT.Reports of practical oncology and radiotherapy : journal of Greatpoland Cancer Center in Poznan and Polish Society of Radiation Oncology · 2023
    Article
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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

11 authors at 2 institutions in 2 countries.

Pei LiuDepartment of Oncology, Xiangya Hospital, Central South University, Changsha, Hunan, China 410008.ORCID https://orcid.org/0000-0002-5356-3582
Gui LiuDepartment of Oncology, Xiangya Hospital, Central South University, Changsha, Hunan, China 410008.
Guihua WangDepartment of Oncology, Changsha Central Hospital, Changsha, Hunan, China 410008.
Weibing ZhouDepartment of Oncology, Xiangya Hospital, Central South University, Changsha, Hunan, China 410008.
Yangqing SunDepartment of Oncology, Xiangya Hospital, Central South University, Changsha, Hunan, China 410008.
Wen ChenDepartment of Oncology, Xiangya Hospital, Central South University, Changsha, Hunan, China 410008.
Qian ZengDepartment of Oncology, Xiangya Hospital, Central South University, Changsha, Hunan, China 410008.
Jidong HongDepartment of Oncology, Xiangya Hospital, Central South University, Changsha, Hunan, China 410008.
Qiongxuan XieDepartment of Oncology, Xiangya Hospital, Central South University, Changsha, Hunan, China 410008.
Ludi OuDepartment of Oncology, Xiangya Hospital, Central South University, Changsha, Hunan, China 410008.
Rui WeiDepartment of Oncology, Xiangya Hospital, Central South University, Changsha, Hunan, China 410008.ORCID https://orcid.org/0000-0002-4881-9395
Central South University · CNChangsha Central Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeBecause of the poor prognosis for high-grade glioma (HGG) patients, it is important to increase the dose of the tumor to improve the efficacy while minimizing the dose of organs at risk (OARs). Thus, we evaluated the potential dosimetric gains of helical tomotherapy (HT) versus intensity-modulated radiotherapy (IMRT) or volume-modulated arc therapy (VMAT) for high-grade glioma (HGG).

methodsA total of 42 HGG patients were retrospectively selected who had undergone helical tomotherapy; then, IMRT and VMAT plans were generated and optimized for comparison after contouring crucial neuronal structures for neurogenesis and neurocognitive function. IMRT and VMAT were optimized with the Eclipse treatment planning system (TPS) (Version 11.0.31) and HT using TomoTherapy Hi-Art Software (Version 2.0.7) (Accuray, Madison, WI, USA). All three techniques were optimized for simultaneously delivering 60 Gy to planning target volume (PTV) 1 and 50-54 Gy to PTV2. We also analyzed the homogeneity index (HI) and conformity index (CI) of PTVs and organ at risk (OAR) sparing.

resultsThere was no significant difference in the PTV coverage among IMRT, VMAT, or HT. As for the HI, HT plans (PTV1 HI: 0.09 ± 0.03, PTV2 HI: 0.17 ± 0.05) had the best homogeneity when compared to IMRT plans (PTV1 HI: 0.10 ± 0.04, PTV2 HI: 0.18 ± 0.04) and VMAT plans (PTV1 HI: 0.11 ± 0.03, PTV2 HI: 0.20 ± 0.03). The CI value of HT (PTV1 CI: 0.98 ± 0.03, PTV2: 0.98 ± 0.05) was closest to the optimal value. Except for the IMRT and VMAT groups, there were statistically significant differences between the other two groups of the CI values in both PTV1 and PTV2. The other comparison values were statistically significant except for the optic nerve, and VMAT had the best sparing of the optic chiasm. The mean and max doses of OARs declined significantly in HT.

conclusionsFor high-grade glioma patients, HT had superior outcomes in terms of PTV coverage and OAR sparing as compared with IMRT/VMAT.

Indexed as

Radiotherapy, Intensity-ModulatedRadiotherapy Planning, Computer-AssistedBrain NeoplasmsFemaleGliomaHumansMaleOrgans at RiskRadiometryRetrospective Studies

Identifiers

PMID32258121
PMCPMC7109582
OpenAlexW3010954460

What OpenQuestion holds

Textmetadata
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.