Evidence map›Paper›PMID 32781754›Full record

ArticleInternational journal of molecular sciences2020

In Vitro Comparison of Passive and Active Clinical Proton Beams.

Anna Michaelidesová, Jana Vachelová, Jana Klementová, Tomáš Urban, Kateřina Pachnerová Brabcová, Stanislav Kaczor, Martin Falk, Iva Falková, Daniel Depeš, Vladimír Vondráček and 1 more

Abstract readComparative Study
In one paragraph

Article in International journal of molecular sciences, 2020. 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
–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

10 citing papers in PubMed.

  1. Article
  2. Review
  3. Article
  4. Proton minibeam radiotherapy: a review.Frontiers in oncology · 2025
    Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Radiation Damage in Biomolecules and Cells.International journal of molecular sciences · 2020
    Article
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.

Anna MichaelidesováNuclear Physics Institute of the Czech Academy of Sciences, Řež 130, 25068 Řež, Czech Republic.ORCID 0000-0002-9478-869X
Jana VachelováNuclear Physics Institute of the Czech Academy of Sciences, Řež 130, 25068 Řež, Czech Republic.
Jana KlementováNuclear Physics Institute of the Czech Academy of Sciences, Řež 130, 25068 Řež, Czech Republic.
Tomáš UrbanFaculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Břehová 7, 11519 Prague, Czech Republic.
Kateřina Pachnerová BrabcováNuclear Physics Institute of the Czech Academy of Sciences, Řež 130, 25068 Řež, Czech Republic.
Stanislav KaczorFaculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Břehová 7, 11519 Prague, Czech Republic.
Martin FalkInstitute of Biophysics of the Czech Academy of Sciences, Královopolská 135, 61265 Brno, Czech Republic.ORCID 0000-0002-9229-0468
Iva FalkováInstitute of Biophysics of the Czech Academy of Sciences, Královopolská 135, 61265 Brno, Czech Republic.
Daniel DepešInstitute of Biophysics of the Czech Academy of Sciences, Královopolská 135, 61265 Brno, Czech Republic.
Vladimír VondráčekProton Therapy Center Czech, Budínova 2437/1a, 180 00 Prague, Czech Republic.
Marie DavídkováNuclear Physics Institute of the Czech Academy of Sciences, Řež 130, 25068 Řež, Czech Republic.

Funding

Czech Science Foundation 20-04109JGerman Academic Exchange Service DAAD-19-03INSPIRE project of the European Union's Horizon 2020 Research and Innovation Programme 730983
6 · The paper itself

Abstract

Nowadays, the irradiation methodology in proton therapy is switching from the use of passively scattered beams to active pencil beams due to the possibility of more conformal dose distributions. The dose rates of active pencil beams are much higher than those of passive beams. The purpose of this study was to investigate whether there is any difference in the biological effectiveness of these passive and active irradiation modes. The beam qualities of double scattering and pencil beam scanning were measured dosimetrically and simulated using the Monte Carlo code. Using the medulloblastoma cell line DAOY, we performed an in vitro comparison of the two modes in two positions along the dose-deposition curve plateau and inside the Bragg peak. We followed the clonogenic cell survival, apoptosis, micronuclei, and γH2AX assays as biological endpoints. The Monte Carlo simulations did not reveal any difference between the beam qualities of the two modes. Furthermore, we did not observe any statistically significant difference between the two modes in the in vitro comparison of any of the examined biological endpoints. Our results do not show any biologically relevant differences related to the different dose rates of passive and active proton beams.

Indexed as

Proton TherapyApoptosisCell Line, TumorCell SurvivalComputer SimulationHistonesHumansLinear Energy TransferMicronucleus TestsMonte Carlo MethodNeutronsH2AX protein, humanHistonescell survivaldouble scatteringpencil beam scanningproton therapy

Identifiers

PMID32781754
PMCPMC7460593

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.