NCT05539144

A New Delineation Approach for Oral Cavity, Oropharynx, Larynx and Hypopharynx in IMRT for Head and Neck Cancer

A New Delineation Approach for Oral Cavity, Oropharynx, Larynx and Hypopharynx in Intensity-modulated Radiation Treatment for Head and Neck Cancer

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 8 (actual)
• Sponsor: Hebei Provincial Hospital of Traditional Chinese Medicine · Other Government
• Sex: All
• Age: —
• Healthy volunteers: Not accepted

Summary

The investigators tries a new method to delineating the oral cavity, oropharynx, larynx and hypopharynx, and use the head-and-neck region to test whether the method can to create a good IMRT plan, and alleviate the oral radiation injury, reduce the incidence of adverse reactions.

Detailed description

Purpose: To assess the dosimetric effect of new delineation approach for oral cavity, oropharynx, larynx and hypopharynx in intensity-modulated radiotherapy(IMRT) treatment planning for head and neck cancer. Methods: Twenty head and neck cancer patients were treated by IMRT. Target volumes and several organs at risk were delineated with Corvus6．3 treatment planning system. An investigative IMRT plan was generated based on a standard treatment planning protocol, but used a new delineation approach for oral cavity, oropharynx, larynx and hypopharynx. Plans were exported to treatment planning system for quantitative analysis of dose volume parameters. Variables assessed included: maximum oral cavity, oropharynx, larynx and hypopharynx dose, equivalent uniform dose of the oral cavity, oropharynx, larynx and hypopharynx (EUD), mean oral cavity, oropharynx, larynx and hypopharynx dose, mean organs at risks (OARs) doses, and dose homogeneity inside the target volumes. .

Conditions

• Head and Neck Cancer
• Radiotherapy
• Oropharynx Abnormality
• Radiotherapy; Adverse Effect

Interventions

Type	Name	Description
RADIATION	"Oropharyngeal mucosa"	"Oropharyngeal mucosa" was delineated as OARs and limiting its dose
RADIATION	oropharynx	oropharynx was delineated as OARs and limiting its dose
RADIATION	oropharynx and "oropharyngeal mucosa"	oropharynx and "oropharyngeal mucosa"were delineated as OARs and limiting its dose

Timeline

• Start date: 2021-11-11
• Primary completion: 2022-12-11
• Completion: 2023-12-11
• First posted: 2022-09-14
• Last updated: 2024-05-17

Locations

1 site across 1 country: China