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Cancer Center

​​​Cancer Surgery Without a Scalpel

Houston’s first Varian Edge helps destroy tumors with powerful, precise radiation beams.

For many cancer patients, radiation is a key part of their treatment. The Kelsey-Seybold Cancer Center is the first in Houston to offer cancer treatment using the Varian Edge™ Radiosurgery System, one of only 200 centers in the country offering this highly specialized treatment option. The Edge opens the door for a noninvasive alternative to conventional surgery. Using advanced cancer treatment technology, the Edge system offers patients a fast, effective surgical option for treating tumors without any incisions or overnight hospital stays.

The Edge is used on a variety of cancers such as brain cancer in areas typically difficult to reach with traditional surgery. It delivers precise and accurate beams of radiation to a tumor while minimizing exposure to healthy tissue.

The Edge has a robotic treatment couch that moves patients in three-dimensional space before treatment to be sure they are positioned correctly. The Edge’s flattening filter-free beam is designed to ensure precise administration of rapid-fire radiation at a rate of 2,400 monitor units per minute – a dose rate six times greater than that of standard linear accelerator beams. The overall length of treatment can be cut drastically, in some cases from eight weeks down to between one and five treatment days.


Watch the video to see the Edge in action.

Learn more about the Edge technology​ and about radiosurgery.

​“The Edge system works by delivering large, targeted doses of radiation to obliterate cancer cells while protecting surrounding healthy tissue.” – Snehal Desai, M.D., Medical Direct​or of Radiation Oncology​

​The Edge radiosurgery system offers a new line of defense in the fight against cancer and it’s the first of its kind available to cancer patients in Houston.” – Tejash “TJ” Patel, M.D., Chief of Hematology and Oncology

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