Evidence map›Paper›PMID 33068126›Full record

ArticleStrahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al]2021

Hybrid volumetric modulated arc therapy for hypofractionated radiotherapy of breast cancer: a treatment planning study.

Alexander Venjakob, Michael Oertel, Dominik Alexander Hering, Christos Moustakis, Uwe Haverkamp, Hans Theodor Eich

Open access · hybridAbstract read
In one paragraph

Article in Strahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al], 2021. 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
3.1field-weighted citation impact, top 8% 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

8 citing papers in PubMed, 16 citations in OpenAlex.

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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

6 authors at 1 institution in 1 country.

Alexander VenjakobDepartment of Radiation Oncology, University Hospital Muenster, Building A1, 1 Albert-Schweitzer-Campus, 48149, Muenster, Germany. Alexander.Venjakob@ukmuenster.de.
Michael OertelDepartment of Radiation Oncology, University Hospital Muenster, Building A1, 1 Albert-Schweitzer-Campus, 48149, Muenster, Germany.
Dominik Alexander HeringDepartment of Radiation Oncology, University Hospital Muenster, Building A1, 1 Albert-Schweitzer-Campus, 48149, Muenster, Germany.
Christos MoustakisDepartment of Radiation Oncology, University Hospital Muenster, Building A1, 1 Albert-Schweitzer-Campus, 48149, Muenster, Germany.
Uwe HaverkampDepartment of Radiation Oncology, University Hospital Muenster, Building A1, 1 Albert-Schweitzer-Campus, 48149, Muenster, Germany.
Hans Theodor EichDepartment of Radiation Oncology, University Hospital Muenster, Building A1, 1 Albert-Schweitzer-Campus, 48149, Muenster, Germany.
University Hospital Münster · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThis study aims to evaluate the best possible practice using hybrid volumetric modulated arc therapy (H-VMAT) for hypofractionated radiation therapy of breast cancer. Different combinations of H‑VMAT-a combination of three-dimensional radiotherapy (3D-CRT) and VMAT-were analyzed regarding planning target volume (PTV), dose coverage, and exposure to organs at risk (OAR).

methodsPlanning computed tomography scans were acquired in deep-inspiration breath-hold. A total of 520 treatment plans were calculated and evaluated for 40 patients, comprising six different H‑VMAT plans and a 3D-CRT plan as reference. H‑VMAT plans consisted of two treatment plans including 3D-CRT and VMAT. During H‑VMAT planning, the use of hard wedge filters (HWF) and beam energies were varied. The reference plans were planned with mixed beam energies and the inclusion/omission of HWF.

resultsCompared to the reference treatment plans, all H‑VMAT plans showed consistently better PTV dose coverage, conformity, and homogeneity. Additionally, OAR protection was significantly improved with several H‑VMAT combinations (p < 0.05). The comparison of different H‑VMAT combinations showed that inclusion of HWF in the base plan had a negative impact on PTV dose coverage, conformity, and OAR exposure. It also increased the planned monitor units and beam-on time. Advantages of using lower beam energies (6-MV photons) in both the base plan and in the VMAT supplementary dose were observed.

conclusionThe H‑VMAT technique is an effective possibility for generating homogenous and conformal dose distributions. With the right choice of H‑VMAT combination, superior OAR protection is achieved compared to 3D-CRT.

Indexed as

Radiation Dose HypofractionationAlgorithmsBreastBreast NeoplasmsFemaleHumansOrgans at RiskRadiotherapy, Intensity-ModulatedBreast radiation therapyClinical applicationHybrid planningHypofractionationTreatment planning challenge

Identifiers

PMID33068126
PMCPMC7987622
OpenAlexW3092661022

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.