Symmetry™

4D tumor Position visualization

Traditional external markers in lung cancer radiation therapy don’t account for baseline shifts of the tumor throughout the course of the treatment sessions. Symmetry captures image data during the breathing phase and performs sophisticated computations to provide 4D data. This data helps visualize the tumor position in each phase of the respiratory cycle to arrive at an average position of the tumor for each treatment.

The benefits are an accounting of baseline shifts and the ability of the physician to treat using reduced margins around the tumor by virtue of enhanced knowledge of the tumor’s position on a day-to-day basis.

• Helps achieve symmetrical dose distribution
• Uninterrupted patient set-up and treatment delivery
• 一个ccounts for baseline shift
• Enables margin reduction
• Simple intuitive workflow
• Ideal for SBRT

Note: Symmetry is a feature set of XVI.