Utility of intraoral stents in external beam radiotherapy for head and neck cancer

Reports of Practical Oncology and Radiotherapy : Journal of Greatpoland Cancer Center in Poznań and Polish Society of Radiation Oncology
Hiroshi DoiNorihiko Kamikonya

Abstract

This study aimed to assess the utility and stability of intraoral stent during intensity-modulated radiation therapy (IMRT). The benefits of intraoral stents in radiotherapy are unclear. We analyzed 386 setup errors in 12 patients who received IMRT for head and neck cancers without intraoral stents (intraoral stent [-]) and 183 setup errors in 6 patients who received IMRT with intraoral stents (intraoral stent [+]). All patients were matched according to the immobilization method (masks and boards). Setup errors were measured as the distance from the initial setup based on the marking on the skin and mask to the corrected position based on bone matching on cone beam computed tomography. The mean interfractional setup errors in the right-left, craniocaudal, anterior-posterior (AP), and three-dimensional (3D) directions were -0.33, 0.08, -0.25, and 2.75 mm in the intraoral stent (-) group and -0.37, 0.24, -0.63, and 2.42 mm in the intraoral stent (+) group, respectively (P = 0.50, 0.65, 0.01, and 0.02, respectively). The systematic errors for the same directions were 0.89, 1.46, 1.15, and 0.88 mm in the intraoral stent (-) group and 0.62, 1.69, 0.68, and 0.56 mm in the intraoral stents (+) group, respectively. The random errors w...Continue Reading

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Citations

Mar 5, 2020·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Julia Stephanie BrunoEduardo Rodrigues Fregnani
Aug 31, 2019·Reports of Practical Oncology and Radiotherapy : Journal of Greatpoland Cancer Center in Poznań and Polish Society of Radiation Oncology·P AppendinoM G Ruo Redda
Apr 6, 2021·The Journal of Prosthetic Dentistry·Akanksha SrivastavaRuth Aponte-Wesson
Apr 22, 2021·The Journal of Prosthetic Dentistry·Thaís Bianca BrandãoVictor Eduardo de Souza Batista
Jun 11, 2021·Physical and Engineering Sciences in Medicine·Susannah ClelandTanya Kairn
Nov 26, 2021·Radiological Physics and Technology·Hiroaki IkawaHiroshi Tsuji

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