Evidence map›Paper›PMID 32329509›Full record

ArticleJournal of radiation research2020

Dose-volume histogram analysis and clinical evaluation of knowledge-based plans with manual objective constraints for pharyngeal cancer.

Takuya Uehara, Hajime Monzen, Mikoto Tamura, Kazuki Ishikawa, Hiroshi Doi, Yasumasa Nishimura

Abstract readComparative Study
In one paragraph

Article in Journal of radiation research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing 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

9 citing papers in PubMed.

  1. Article
  2. Review
  3. Artificial Intelligence in Radiation Therapy.IEEE transactions on radiation and plasma medical sciences · 2022
    Article
  4. Article
  5. Knowledge-based planning using pseudo-structures for volumetric modulated arc therapy (VMAT) of postoperative uterine cervical cancer: a multi-institutional study.Reports of practical oncology and radiotherapy : journal of Greatpoland Cancer Center in Poznan and Polish Society of Radiation Oncology · 2021
    Article
  6. Article
  7. Article
  8. Article
  9. 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

6 authors.

Takuya UeharaDepartment of Radiation Oncology, Kindai University Faculty of Medicine, Osaka-Sayama, Osaka, Japan.
Hajime MonzenDepartment of Medical Physics, Graduate School of Medical Sciences, Kindai University, Osaka-Sayama, Osaka, Japan.
Mikoto TamuraDepartment of Medical Physics, Graduate School of Medical Sciences, Kindai University, Osaka-Sayama, Osaka, Japan.
Kazuki IshikawaDepartment of Radiation Oncology, Kindai University Faculty of Medicine, Osaka-Sayama, Osaka, Japan.
Hiroshi DoiDepartment of Radiation Oncology, Kindai University Faculty of Medicine, Osaka-Sayama, Osaka, Japan.
Yasumasa NishimuraDepartment of Radiation Oncology, Kindai University Faculty of Medicine, Osaka-Sayama, Osaka, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The present study aimed to evaluate whether knowledge-based plans (KBP) from a single optimization could be used clinically, and to compare dose-volume histogram (DVH) parameters and plan quality between KBP with (KBPCONST) and without (KBPORIG) manual objective constraints and clinical manual optimized (CMO) plans for pharyngeal cancer. KBPs were produced from a system trained on clinical plans from 55 patients with pharyngeal cancer who had undergone intensity-modulated radiation therapy or volumetric-modulated arc therapy (VMAT). For another 15 patients, DVH parameters of KBPCONST and KBPORIG from a single optimization were compared with CMO plans with respect to the planning target volume (D98%, D50%, D2%), brainstem maximum dose (Dmax), spinal cord Dmax, parotid gland median and mean dose (Dmed and Dmean), monitor units and modulation complexity score for VMAT. The Dmax of spinal cord and brainstem and the Dmed and Dmean of ipsilateral parotid glands were unacceptably high for KBPORIG, although the KBPCONST DVH parameters met our goal for most patients. KBPCONST and CMO plans produced comparable DVH parameters. The monitor units of KBPCONST were significantly lower than those of the CMO plans (P < 0.001). Dose distribution of the KBPCONST was better than or comparable to that of the CMO plans for 13 (87%) of the 15 patients. In conclusion, KBPORIG was found to be clinically unacceptable, while KBPCONST from a single optimization was comparable or superior to CMO plans for most patients with head and neck cancer.

Indexed as

Radiotherapy DosageAdultAgedAged, 80 and overFemaleHumansMaleMiddle AgedNeoplasm MetastasisOrgans at RiskParotid GlandPharyngeal NeoplasmsPhotonsRadiotherapy, Intensity-ModulatedRadiotherapy Planning, Computer-Assistedintensity-modulated radiation therapyknowledge-based planningnasopharyngeal canceroropharyngeal cancervolumetric-modulated arc therapy

Identifiers

PMID32329509
PMCPMC7299264

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LicenceCC BY
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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.