Setup errors in radiation therapy for thoracic tumor patients of different body mass index.

ABSTRACT:

Purpose

To assess the setup errors in radiation therapy for thoracic tumors patients of different somatotypes, and to seek an individualized mathematical basis for defining the planning target volume (PTV).

Methods

Sixty patients with thoracic tumors were divided into four somatotypes according to their body mass index (BMI), and their body positions were setup by two groups of technicians independently. CT simulations were performed and the reconstructed radiography was digitally generated as reference images for location verification and error measurement. By setting positioning error ranges, the within-range positioning correction rate was compared among groups.

Results

Position setups for patients in the emaciated group, moderate group, and overweight group were r

SUBMITTER: Zhao J 

PROVIDER: S-EPMC5978940 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature