Clinical assessment and characterization of a dual tube kilovoltage X-ray localization system in the radiotherapy treatment room.

ABSTRACT:

Introduction

Although flat-panel based X-ray imaging has been well tested in diagnostic radiology, its use as an image-guided-radiotherapy (IGRT) system in a treatment room is new and requires systematic assessment.

Materials and methods

BrainLab Novalis IGRT system was used for this study. It consists of two floor mounted kV X-ray tubes projecting obliquely into two flat-panel detectors mounted on the ceiling. The system automatically fuses the 2D localization images with 3D simulation CT image to provide positioning guidance. The following characteristics of the system were studied: (1) Coincidence of the isocenters between the IGRT and Linac; (2) Image quality; (3) Exposure; (4) Linearity, uniformity and repeatability.

Results

(1) Localization accuracy and coincide

SUBMITTER: Lee SW 

PROVIDER: S-EPMC5721528 | biostudies-literature | 2008 Jan

REPOSITORIES: biostudies-literature