Evidence map›Paper›PMID 35738601›Full record

ArticleIn vivo (Athens, Greece)

Error Detectability of Isodose Volumes as ROIs in Prostate Intensity-modulated RT QA.

Ryuta Nakahara, Masayuki Fujiwara, Haruyuki Takaki, Masao Tanooka, Kentaro Ishii, Ryu Kawamorita, Koichiro Yamakado

Abstract read
In one paragraph

Article in In vivo (Athens, Greece). The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

7 authors.

Ryuta NakaharaDepartment of Radiology, Hyogo Medical University, Nishinomiya, Japan.
Masayuki FujiwaraDepartment of Radiology, Hyogo Medical University, Nishinomiya, Japan; m-fuji@hyo-med.ac.jp.
Haruyuki TakakiDepartment of Radiology, Hyogo Medical University, Nishinomiya, Japan.
Masao TanookaDepartment of Radiology, Hyogo Medical University, Nishinomiya, Japan.
Kentaro IshiiDepartment of Radiation Oncology, Tane General Hospital, Osaka, Japan.
Ryu KawamoritaDepartment of Radiation Oncology, Tane General Hospital, Osaka, Japan.
Koichiro YamakadoDepartment of Radiology, Hyogo Medical University, Nishinomiya, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND/

aimTo evaluate the quality of error detectability with a three-dimensional verification system using isodose volumes as regions of interest (ROIs) in quality assurance (QA) of intensity-modulated radiation therapy. PATIENTS AND

methodsTreatment plans with four types of intentional errors were created from the data of 20 patients with localized prostate cancer. These plans underwent QA using the three-dimensional verification system. The datasets of another 30 cases without inserted errors were assessed as controls. The ROIs used in the evaluations were those used in our conventional method (planning target volume, rectum, and bladder). The isodose volume method (5%, 50% and 95% isodose volume) and the error detection rates (measurement above the tolerance values, as set from the other 30 cases) were assessed and compared.

resultsThere was significantly higher multileaf collimator systematic closed error detectability with the isodose volume method compared to the conventional method (A-side 0.2 mm: p=0.005, A-side 0.35 mm: p=0.002, B-side 0.2 mm: p=0.001 and B-side 0.35 mm: p=0.010). There were no error types for which the error detection rate of the isodose volume method was lower than that of the conventional method.

conclusionThe isodose volume method was able to evaluate the irradiated ROIs that could be delineated, and improved error detectability. This method has the potential to provide a wider margin of safety in intensity-modulated radiation therapy.

Indexed as

Prostatic NeoplasmsRadiotherapy, Intensity-ModulatedHumansMalePelvisProstateRadiotherapy DosageRadiotherapy Planning, Computer-Assistederror detectionIMRT verificationisodose volume

Identifiers

PMID35738601
PMCPMC9301393

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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.