Evidence map›Paper›PMID 32641082›Full record

ArticleRadiation oncology (London, England)2020

Dosimetric comparison between RapidArc and HyperArc techniques in salvage stereotactic body radiation therapy for recurrent nasopharyngeal carcinoma.

Hsiu-Wen Ho, Steve P Lee, Hisu-Man Lin, Hsiao-Yun Chen, Chun-Chiao Huang, Shih-Chang Wang, Ching-Chieh Yang, Yu-Wei Lin

Open access · goldAbstract readComparative Study
In one paragraph

Article in Radiation oncology (London, England), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
4.1field-weighted citation impact, top 5% 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

14 citing papers in PubMed, 26 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Clinical implementation of HyperArc.Physical and engineering sciences in medicine · 2022
    Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. 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

8 authors at 2 institutions in 2 countries.

Hsiu-Wen HoDepartment of Radiation Oncology, Chi Mei Medical Center, No.901, Jhonghua Rd., Yongkang Dist., Tainan City, 71004, Taiwan.
Steve P LeeDepartment of Radiation Oncology, David Geffen School of Medicine, University of California, Los Angeles, CA, USA.
Hisu-Man LinDepartment of Radiation Oncology, Chi Mei Medical Center, No.901, Jhonghua Rd., Yongkang Dist., Tainan City, 71004, Taiwan.
Hsiao-Yun ChenDepartment of Radiation Oncology, Chi Mei Medical Center, No.901, Jhonghua Rd., Yongkang Dist., Tainan City, 71004, Taiwan.
Chun-Chiao HuangDepartment of Radiation Oncology, Chi Mei Medical Center, No.901, Jhonghua Rd., Yongkang Dist., Tainan City, 71004, Taiwan.
Shih-Chang WangDepartment of Radiation Oncology, Chi Mei Medical Center, No.901, Jhonghua Rd., Yongkang Dist., Tainan City, 71004, Taiwan.
Ching-Chieh YangDepartment of Radiation Oncology, Chi Mei Medical Center, No.901, Jhonghua Rd., Yongkang Dist., Tainan City, 71004, Taiwan.
Yu-Wei LinDepartment of Radiation Oncology, Chi Mei Medical Center, No.901, Jhonghua Rd., Yongkang Dist., Tainan City, 71004, Taiwan. marklin1108@gmail.com.ORCID http://orcid.org/0000-0002-1768-8994
Chi Mei Medical Center · TWUniversity of California, Los Angeles · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTo evaluate dosimetric differences of salvage irradiations using two commercially available volumetric modulated arc therapy (VMAT) stereotactic body radiation therapy (SBRT) techniques: RapidArc (RA) and HyperArc (HA), for recurrent nasopharyngeal carcinoma (NPC) after initial radiation therapy.

methodsTen patients with recurrent NPC status previously treated with radiation therapy were considered suitable candidates for salvage SBRT using VMAT approach. Two separate treatment plans were created with HA and RA techniques for each case, with dosimetric outcomes compared with respect to tumor target coverage and organs-at-risk (OARs) sparing. Furthermore, the cumulative radiobiological effects to the relevant OARs from the original radiotherapy to the respective salvage SBRT plans were analyzed in terms of biologically effective dose (BED).

resultsTreatment with HA exhibited similar target dose coverage as with RA, while delivering a higher mean dose to the targets. Using RA technique, the mean maximal doses to optic apparatus and the mean brain dose were reduced by 1 to 1.5 Gy, comparing to HA technique. The conformity index, gradient radius, and intermediate dose spillage in HA plans were significantly better than those in RA. With HA technique, the volume of brain receiving 12 Gy or more was reduced by 44%, comparing to RA technique. The cumulative BEDs to spinal cord and optic apparatus with RA technique were 1 to 2 Gy

conclusionsWith better dose distribution than RA while maintaining sufficient target dose coverage, HA represents an attractive salvage SBRT technique for recurrent NPC.

Indexed as

HumansNasopharyngeal CarcinomaNasopharyngeal NeoplasmsNeoplasm Recurrence, LocalOrgans at RiskRadiosurgeryRadiotherapy DosageRadiotherapy, Intensity-ModulatedRadiotherapy Planning, Computer-AssistedSalvage TherapyBiologically effective dose (BED)Dosimetric comparisonHyperArcRapidArcRecurrent nasopharyngeal carcinomaStereotactic body radiation therapy (SBRT)

Identifiers

PMID32641082
PMCPMC7346374
OpenAlexW3041283476

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.