Evidence map›Paper›PMID 25424536›Full record

ArticleRadiation oncology (London, England)2014

mARC vs. IMRT radiotherapy of the prostate with flat and flattening-filter-free beam energies.

Yvonne Dzierma, Katharina Bell, Jan Palm, Frank Nuesken, Norbert Licht, Christian Rübe

Open access · goldAbstract read
In one paragraph

Article in Radiation oncology (London, England), 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
3.6field-weighted citation impact, top 7% 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

10 citing papers in PubMed, 19 citations in OpenAlex.

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  10. The effect of beam shape on physical parameters of head and neck simultaneous-integrated boost intensity-modulated radiation therapy.Reports of practical oncology and radiotherapy : journal of Greatpoland Cancer Center in Poznan and Polish Society of Radiation Oncology
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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.

Yvonne DziermaDepartment of Radiotherapy, Saarland University Medical Center, Kirrberger Str. Geb. 6.5, 66421, Homburg, Germany. yvonne.dzierma@uks.eu.
Katharina BellDepartment of Radiotherapy, Saarland University Medical Center, Kirrberger Str. Geb. 6.5, 66421, Homburg, Germany. rine.bell@gmx.de.
Jan PalmDepartment of Radiotherapy, Saarland University Medical Center, Kirrberger Str. Geb. 6.5, 66421, Homburg, Germany. jan.palm@uks.eu.
Frank NueskenDepartment of Radiotherapy, Saarland University Medical Center, Kirrberger Str. Geb. 6.5, 66421, Homburg, Germany. frank.nuesken@uks.eu.
Norbert LichtDepartment of Radiotherapy, Saarland University Medical Center, Kirrberger Str. Geb. 6.5, 66421, Homburg, Germany. norbert.licht@uks.eu.
Christian RübeDepartment of Radiotherapy, Saarland University Medical Center, Kirrberger Str. Geb. 6.5, 66421, Homburg, Germany. christian.ruebe@uks.eu.
Saarland University · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThere as yet exists no systematic planning study investigating the novel mARC rotational radiotherapy technique, which is conceptually different from VMAT. We therefore present a planning study for prostate cancer, comparing mARC with IMRT treatment at the same linear accelerator equipped with flat and flattening-filter-free (FFF) photon energies.

methodsWe retrospectively re-contoured and re-planned treatment plans for 10 consecutive prostate cancer patients. Plans were created for a Siemens Artiste linear accelerator with flat 6 MV and FFF 7 MV photons, using the Prowess Panther treatment planning system. mARC and IMRT plans were compared with each other considering indices for plan quality and dose to organs at risk. All plans were exported to the machine and irradiated while measuring scattered dose by thermoluminescent dosimeters placed on an anthropomorphic phantom. Treatment times were also measured and compared.

resultsAll plans were found acceptable for treatment. There was no marked preference for either technique or energy from the point of view of target coverage and dose to organs at risk. Scattered dose was significantly decreased by the use of FFF energies. While mARC and IMRT plans were of very similar overall quality, treatment time could be markedly decreased both by the use of mARC and FFF energy.

conclusionsHighly conformal treatment plans could be created both by the use of flat 6 MV and FFF 7 MV energy, using IMRT or mARC. For all practical purposes, the FFF 7 MV energy and mARC plans are acceptable for treatment, a combination of both allowing a drastic reduction in treatment time from over 5 minutes to about half this value.

Indexed as

AgedHumansMaleMiddle AgedOrgans at RiskProstatic NeoplasmsRadiotherapy DosageRadiotherapy, Intensity-ModulatedRadiotherapy Planning, Computer-Assisted

Identifiers

PMID25424536
PMCPMC4272773
OpenAlexW2159230150

What OpenQuestion holds

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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.