Evidence map›Paper›PMID 33184970›Full record

ArticleJournal of applied clinical medical physics2020

Surface and build-up dose comparison between Elekta 6 MV flattening filter and flattening-filter-free beams using an advanced Markus ionization chamber and a solid water-equivalent phantom.

Toshikazu Imae, Shigeharu Takenaka, Yuichi Watanabe, Atsushi Aoki, Kanako Matsuda, Katsutake Sasaki, Shigeki Saegusa, Kanabu Nawa, Keiichi Nakagawa, Osamu Abe

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Journal of applied clinical medical physics, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing 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

2 citing papers in PubMed.

  1. Article
  2. 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

10 authors.

Toshikazu ImaeDepartment of Radiology, University of Tokyo Hospital, Tokyo, Japan.ORCID https://orcid.org/0000-0002-6850-3806
Shigeharu TakenakaDepartment of Radiology, University of Tokyo Hospital, Tokyo, Japan.
Yuichi WatanabeFaculty of Health Sciences, Komazawa University, Tokyo, Japan.
Atsushi AokiDepartment of Radiology, University of Tokyo Hospital, Tokyo, Japan.
Kanako MatsudaDepartment of Radiology, University of Tokyo Hospital, Tokyo, Japan.
Katsutake SasakiDepartment of Radiology, University of Tokyo Hospital, Tokyo, Japan.
Shigeki SaegusaDepartment of Radiology, University of Tokyo Hospital, Tokyo, Japan.
Kanabu NawaDepartment of Radiology, University of Tokyo Hospital, Tokyo, Japan.
Keiichi NakagawaDepartment of Radiology, University of Tokyo Hospital, Tokyo, Japan.
Osamu AbeDepartment of Radiology, University of Tokyo Hospital, Tokyo, Japan.

Funding

Japan Society for the Promotion of Science 15K08692Japan Society for the Promotion of Science 18K07667
6 · The paper itself

Abstract

Using a plane-parallel advanced Markus ionization chamber and a stack of water-equivalent solid phantom blocks, percentage surface and build-up doses of Elekta 6 MV flattening filter (FF) and flattening-filter-free (FFF) beams were measured as a function of the phantom depth for field sizes ranging from 2 × 2 to 10 × 10 cm

Indexed as

PhotonsWaterHumansParticle AcceleratorsPhantoms, ImagingRadiotherapy DosageWatera solid water-equivalent phantombuild-upflattening filter (FF) beamflattening-filter-free (FFF) beamionization chambersurface dose

Identifiers

PMID33184970
PMCPMC7769389

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Registered trials

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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.