Empirical modeling of the percent depth dose for megavoltage photon beams.

ABSTRACT:

Introduction

This study presents an empirical method to model the high-energy photon beam percent depth dose (PDD) curve by using the home-generated buildup function and tail function (buildup-tail function) in radiation therapy. The modeling parameters n and μ of buildup-tail function can be used to characterize the Collimator Scatter Factor (Sc) either in a square field or in the different individual upper jaw and lower jaw setting separately for individual monitor unit check.

Methods and materials

The PDD curves for four high-energy photon beams were modeled by the buildup and tail function in this study. The buildup function was a quadratic function in the form of [Formula: see text] with the main parameter of d (depth in water) and n, while the tail function was in the

SUBMITTER: Li XJ 

PROVIDER: S-EPMC8735605 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature