Evidence map›Paper›PMID 29506539›Full record

ArticleRadiation oncology (London, England)2018

Linac-based VMAT radiosurgery for multiple brain lesions: comparison between a conventional multi-isocenter approach and a new dedicated mono-isocenter technique.

Ruggero Ruggieri, Stefania Naccarato, Rosario Mazzola, Francesco Ricchetti, Stefanie Corradini, Alba Fiorentino, Filippo Alongi

Abstract readComparative Study
In one paragraph

Article in Radiation oncology (London, England), 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 115 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
115citing papers in PubMed, 1 pooled it
–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

115 citing papers in PubMed, 1 synthesis or guideline pooled it.

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55 more citing papers are in PubMed but not listed here.

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

7 authors.

Ruggero RuggieriDepartment of Radiation Oncology, Ospedale "Sacro Cuore - don Calabria", Via Don A. Sempreboni 5, 37024, Negrar, VR, Italy. ruggieri.ruggero@gmail.com.ORCID http://orcid.org/0000-0002-2044-8035
Stefania NaccaratoDepartment of Radiation Oncology, Ospedale "Sacro Cuore - don Calabria", Via Don A. Sempreboni 5, 37024, Negrar, VR, Italy.
Rosario MazzolaDepartment of Radiation Oncology, Ospedale "Sacro Cuore - don Calabria", Via Don A. Sempreboni 5, 37024, Negrar, VR, Italy.
Francesco RicchettiDepartment of Radiation Oncology, Ospedale "Sacro Cuore - don Calabria", Via Don A. Sempreboni 5, 37024, Negrar, VR, Italy.
Stefanie CorradiniDepartment of Radiation Oncology, University Hospital, LMU Munich, Munich, Germany.
Alba FiorentinoDepartment of Radiation Oncology, Ospedale "Sacro Cuore - don Calabria", Via Don A. Sempreboni 5, 37024, Negrar, VR, Italy.
Filippo AlongiDepartment of Radiation Oncology, Ospedale "Sacro Cuore - don Calabria", Via Don A. Sempreboni 5, 37024, Negrar, VR, Italy.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundLinac-based stereotactic radiosurgery or fractionated stereotactic radiotherapy (SRS/FSRT) of multiple brain lesions using volumetric modulated arc therapy (VMAT) is typically performed by a multiple-isocenter approach, i.e. one isocenter per lesion, which is time-demanding for the need of independent setup verifications of each isocenter. Here, we present our initial experience with a new dedicated mono-isocenter technique with multiple non-coplanar arcs (HyperArc™, Varian Inc.) in terms of a plan comparison with a multiple-isocenter VMAT approach.

methodsFrom August 2017 to October 2017, 20 patients with multiple brain metastases (mean 5, range 2-10) have been treated by HyperArc in 1-3 fractions. The prescribed doses (Dp) were 18-25 Gy in single-fraction, and 21-27 Gy in three-fractions. Planning Target Volume (PTV), defined by a 2 mm isotropic margin from each lesion, had mean dimension of 9.6 cm

resultsSignificant variations in favour of HA plans were computed for both target dose indexes, CI (p < .01) and GI (p < .01). The lower GI in HA plans was the likely cause of the significant reduction in V

conclusionsFor linac-based SRS/FSRT of multiple brain lesions, HyperArc plans assured a higher CI and a lower GI than standard multiple-isocenter VMAT plans. This is consistent with the computed reduction in V

Indexed as

AgedBrain NeoplasmsDose Fractionation, RadiationFemaleHumansMaleMiddle AgedRadiosurgeryRadiotherapy DosageRadiotherapy, Intensity-ModulatedRadiotherapy Planning, Computer-AssistedBrain metastasesHyperArcSRSVMAT

Identifiers

PMID29506539
PMCPMC5836328

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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.