A dynamic thorax phantom for precise evaluation of lung tumor motion
Introduction
The CIRS Model 008 Dynamic Thorax Phantom is designed to investigate and minimize the impact of organ motion and patient positioning errors in radiation therapy. It is the first commercially available dynamic QA phantom, developed for image acquisition, treatment planning and dose delivery. Major components of the dynamic system include a tissue equivalent thorax phantom, a precision motion actuator, and controller with 16 pre-set motion profiles. Three-dimensional motion to the tumors in the phantom body are achieved by the actuator applying synchronized linear and rotational motion to a moving rod. Sinusoidal and other complex motions can be achieved with sub-millimeter accuracy and reproducibility. The Thorax Phantom is manufactured from materials that mimic tissues within 1% from 50keV to 25MeV. The phantom accurately represents average human thorax anatomy in shape, proportion and structure. Tumors of various size, shape and density can be positioned within the lungs and means are provided for placement of TLD and MOSFET detectors directly within the tumor volume.
Features
Evaluate image acquisition and measure tumor dose of static and dynamic targets
Assess temporally modulated beam deliveries
Calibrate various real-time tumor localization and tracking devices
