XSight Lung Tracking Phantom Kit

QUALITY ASSURANCE AND E2E TESTING ON CYBERKNIFE® SYSTEMS

“Strict QA procedures for the imaging, planning and delivery of radiotherapy using respiratory management devices are required to ensure the safe and effective use of test devices.”

The CIRS Model 18023-A Xsight ® Lung Tracking “XLT” Phantom Kit has been verified and validated by Accuray for use with CyberKnife systems and both are designed to work in conjunction with the Synchrony System.

The XLT phantom body represents an average human thorax in shape, proportion and composition. It consists of a 3D anthropomorphic spine with cortical and trabecular bone, ribs, and lung lobes. One lung lobe accommodates a lung-equivalent rod containing a film cube with a spherical soft tissue target and dosimetric film. Anthropomorphic spine and ribs provide natural reference structures and challenges for tumor tracking and treatment.

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.

The phantom shares some components with the CIRS Model 008A Dynamic Thorax Phantom. As with the Model 008A, 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 XLT 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.

Key differences between the Model 18023-A and the CIRS Model 008A include the length of phantom body, location of the moving rod within the lung, and the inclusion of ribs.

Benefits:

• Use Xsight ® Spine Tracking System for initial phantom alignment
• Display detected respiratory motion of tissue-simulated torso, lung tumor, and critical structures with Synchrony System
• Execute E2E software analysis of the films (without CT number adjustment)
• Visualize 4D treatment optimization using the MultiPlan System

Xsight ® Lung Tracking Phantom

The XLT phantom body represents an average human thorax in shape, proportion and composition.

Features:

• 3D anthropomorphic spine with cortical and trabecular bone, ribs, and lung lobes
• Lung Ball Cube Rod with tumor-simulating target and radiochromic film
• CIRS Motion Control Software enables true 3D target motion
• Independently controlled surrogate and target motion

Xsight ® Lung Phantom Ball Cube Rod

The XLT phantom includes a single dosimeter rod made from lung equivalent epoxy (of respective densities). It contains a spherical target that accommodates two pre-cut Radiochromic® films, and is easily connected and aligned to the drive shaft.