How accurate is TrueBeam in treating cancer?

Dr. Nina F. Johnson, MD
Radiation Oncologist

TrueBeam's precision and accuracy are two of the most important attributes separating this technology from its predecessors. The technology is an advanced noninvasive radiation therapy system that delivers beams of radiation from multiple angles to tumors more effectively and precisely than systems before it. It allows pinpoint positioning and computer tomography imaging through advanced imaging technology. Treatment plans can be customized person-to-person through TrueBeam's advanced 3D imaging. Its imaging technology is capable of monitoring more than 100,000 data points.

Through the visualizations, doctors analyze the tumor and construct how the radiation is delivered to the person. A tumor's size, shape and location all affect and determine the required dose of radiation and how it's administered. Throughout the treatment, the aperture of the system changes to target the tumor, thus minimizing exposure to surrounding healthy tissue. Even tumors that move, like ones found in the lung, are treatable. TrueBeam features a respiratory gating option that synchronizes delivery with a person's breathing while maintaining accuracy. This accuracy allows higher dose delivery rates, typically 40% to 140% higher than older radiation therapy technology.

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