Precision Robotic Treatment Head for Safer, More Effective Stereotactic Radiosurgery (2016-023)

Market Overview:

This Cobalt-60 based treatment head for Stereotactic Radiosurgery eliminates the limiting factors of current heads currently used to fight cancer health disparities. Radiation therapy is a growing market, expected to reach $8 billion by 2019. Approximately 50 percent of all cancer patients will undergo radiation therapy as part of their treatment. Stereotactic Radiosurgery in particular uses many precisely focused radiation beams to treat cancerous tumors and other abnormalities in the brain, neck, and other parts of the body. There are currently three types of technologies used to deliver radiation during stereotactic radiosurgery: linear accelerator, gamma knife, and proton beam. Each of these approaches work in a similar manner, but they also pose treatment limitations. For example, patients must be enclosed in the treatment chamber, often causing psychological stress, and the technologies are bulky and heavy, weighing more than 40,000 lbs. Clemson University Researchers have developed a Precision Radiosurgery Treatment Head (PRTH) with a highly competitive design that will allow neurosurgeons to treat patients quicker, more safely and more precisely. The design eliminates the need for placing patients inside a Gantry and allows the possibility of automatic patient reposting, significantly decreasing treatment time and improving patient comfort.


Application                                                           Stage of Development

Radiation therapy; Cancer treatment                     Preliminary Prototype



• Utilizes a compact design, requiring less space and decreasing manufacturing costs

• Allows the entire treatment head to move easily around the patient, providing a wide range of entry points and minimizing the dose distribution in the surrounding healthy tissue

• Eliminates the need for patient placement inside a Gantry, significantly decreasing treatment time and providing an overall better experience for patients


Technical Summary

This PRTH adopts a new geometry sources arrangement. Rather than focusing beams inward the sources are arranged in one row along the hyperbolic arc of a source body, focusing beams outward to a spatial focal point. Collimators structure sleeves around the source body provide beam collimation and also first layer of shielding. The shielding body housing the collimator structure provides secondary shielding to the treatment head. The focal point is located outside the shielding body in an open spatial area. Because the sources are located in the very core of the total treatment head geometry arranged like a curve line, all the shielding around the cure line sources array is minimized physically in size and weight. The total weight can be less than 4,000 lbs. Since the focal point is located outside of the treatment head, there is then no limitation to expand the treatment to any part of the body.


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Inventors:                        Xiao Ran (Leon) Zheng, Endre Takacs, Mark Leising


Patent Type:                    Provisional


Serial Number:               NA


CURF Reference:           2016-023


Patent Information:
Biomedical Sciences
For Information, Contact:
Andy Bluvas
Technology Commercialization Officer
Clemson University Research Foundation
Xiao Ran (Leon) Zheng
Endre Takacs
Mark Leising
Image-Guided Surgery
Medical Device
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