The effect of material assignment in nasal cavity on dose calculation for nasopharyngeal carcinoma (NPC) using Acuros XB

Autor:	Michael L. M. Cheung, Vivian U. Y. Chow, Monica W. K. Kan, Anthony T. C. Chan
Rok vydání:	2022
Předmět:	Radiation Nasopharyngeal Carcinoma Phantoms Imaging Radiotherapy Planning Computer-Assisted Humans Radiology Nuclear Medicine and imaging Nasopharyngeal Neoplasms Radiotherapy Dosage Radiotherapy Intensity-Modulated Nasal Cavity Instrumentation Algorithms
Zdroj:	Journal of applied clinical medical physics. 23(8)
ISSN:	1526-9914
Popis:	To evaluate the effect of material assignment in nasal cavity on dose calculation for the volumetric modulated arc therapy (VMAT) of nasopharyngeal carcinoma (NPC) using Acuros XB (AXB) algorithm.The VMAT plans of 30 patients with NPC were calculated using AXB with material auto-assignment of nasal cavity to lung and reassignment to air respectively. The doses to the planning target volumes (PTVs) overlapping with nasal cavity with material auto-assignment of lung (AXB_Lung) were compared to the values obtained when nasal cavity was reassigned to air (AXB_Air) under the dose-to-medium (DFor dose calculated under AXB_Lung, the DSignificant dose difference calculated by AXB between the material assignment of lung and air in nasal cavity for NPC cases might imply the possibility of underdosage to the PTVs that overlap with inhomogeneity. Therefore, attention should be put to ensure that accurate material assignment for dose calculation under AXB such that optimal dosage was given for tumor control.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::84820462813c94a4ab19bb7f5f8c3a35 https://pubmed.ncbi.nlm.nih.gov/35699203 Zobrazit plný text záznamu Plný text