Evidence map›Paper›PMID 34295382›Full record

ArticleOncology letters2021

Dose distribution effects of spot-scanning proton beam therapy equipped with a multi-leaf collimator for pediatric brain tumors.

Nobuyoshi Fukumitsu, Tomohiro Yamashita, Masayuki Mima, Yusuke Demizu, Takeshi Suzuki, Toshinori Soejima

Open access · diamondAbstract read
In one paragraph

Article in Oncology letters, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.9field-weighted citation impact, top 25% 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

4 citing papers in PubMed, 11 citations in OpenAlex.

  1. Article
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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.

Nobuyoshi FukumitsuDepartment of Radiation Oncology, Kobe Proton Center, Kobe, Hyōgo 650-0047, Japan.
Tomohiro YamashitaDivision of Medical Physics, Kobe Proton Center, Kobe, Hyōgo 650-0047, Japan.
Masayuki MimaDepartment of Radiation Oncology, Kobe Proton Center, Kobe, Hyōgo 650-0047, Japan.
Yusuke DemizuDepartment of Radiation Oncology, Kobe Proton Center, Kobe, Hyōgo 650-0047, Japan.
Takeshi SuzukiDepartment of Anesthesiology, Kobe Proton Center, Kobe, Hyōgo 650-0047, Japan.
Toshinori SoejimaDepartment of Radiation Oncology, Kobe Proton Center, Kobe, Hyōgo 650-0047, Japan.
Kobe Medical Center · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The present study simulated the effect of spot-scanning proton beam therapy (PBT) performed using a device equipped with a multi-leaf collimator (MLC) to calculate the dose distribution. Simulation studies using 18 pediatric patients with brain tumors in the posterior fossa were performed. Treatment plans were created for the MLC at different stages: Fully open (initial plan), fully closed to allow an irradiated area extending to 15 mm from the clinical target volume (CTV) (15-mm plan), or closing only the leaves where an organ at risk (OAR) overlapped with a border at 10 or 5 mm from the CTV (10- and 5-mm plans, respectively). The mean dose values for the brainstem, cervical cord, brain and cochlea in all MLC closure plans decreased as the MLC was closed (P=9.9×10

Indexed as

multi-leaf collimatorpediatric brain tumorsproton beam therapyspot scanning

Identifiers

PMID34295382
PMCPMC8273856
OpenAlexW3173752307

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.