The CIRS Dynamic Thorax Phantom is a precision instrument for investigating and minimizing the impact of tumor motion inside the lung. It provides known, accurate and repeatable three-dimensional target motion inside a tissue equivalent phantom. It is designed for comprehensive analysis of image acquisition, planning and dose delivery in image-guided radiation therapy. The phantom body represents an average human thorax in shape, proportion and composition. A lung equivalent rod containing a spherical target and or various detectors is inserted into the lung equivalent lobe of the phantom. The body is connected to a motion actuator box that induces three-dimensional target motion through linear translation and rotation of the lung equivalent rod. Motion of the rod itself is radiographically invisible due to its matching density with the surrounding material. The target and its motion, given its density difference, can be resolved. Target and surrogate motion are independently controlled with CIRS Motion Control Software. The graphical user interface provides an unlimited variety of motions while simplifying the operation of the Dynamic Thorax Phantom to an intuitive level. Patient specific profiles are easily imported and there is no need to make hardware adjustments or have special programming skills. The Dynamic Thorax Phantom offers ease of use and portability as well as a flexible selection of motion profiles and dosimeter options. All components are packaged in a protective case. The system requires minimal set-up and can be ready to use in minutes. The CIRS Model 008A Dynamic Thorax Phantom presents a sophisticated solution for the complex challenges and emerging technologies in Image-Guided Radiation Therapy.
Capabilities
Commission 4D imaging and 4D radiotherapy systems
Quantify volumetric and positional aliasing of CT in the presence of 3D target motion
Evaluate static and dynamic target localization accuracy of onboard imaging systems
Test accuracy and consistency of tumor tracking and respiratory gating devices
Assess dosimetric accuracy of temporally modulated radiation therapy
Train and evaluate personnel during implementation of new equipment and techniques
