Radiation Oncology Services at Cheyenne Regional Cancer Center provides comprehensive and personalized consultation, treatment planning, radiotherapy and follow-up for patients with a wide variety of cancers. Our board-certified radiation oncologists, board-certified medical physicists, registered radiation therapists, certified medical dosimetrists and registered nurses deliver state-of-the-art compassionate cancer treatment. Our entire team is committed to providing the highest quality of care, individualized for your specific needs.

The Radiation Oncologists determine which treatment options are best for each patient. To aid in making the decision, a large bore CT simulator is used to collect patient images and data that will then be used for the treatment plan. These unique treatment systems allow our Radiation Oncologists to design individualized treatment plans that will deliver the best results possible, based on a patient’s needs. The Cancer Center is proud to offer our patients the safest and highest quality state-of-the-art technologies available.

Radiation Treatment Options

External Beam Radiation Therapy (EBRT)

EBRT is a type of radiation produced by a machine called a linear accelerator. Linear accelerators use high energy subatomic particles produced by the machine to treat your body from the outside. The Cancer Center has two treatment delivery systems that use the very latest in technology to produce safe, high-quality external beam radiation therapy treatment. Treatments are typically given 5 days per week, for a course of five to eight weeks.

Both of our systems are capable of delivering Intensity Modulated Radiation Therapy (IMRT) treatments that allow for precisely shaping the radiation beam to treat the tumor while sparing any healthy anatomy that may be in the treatment area. This type of treatment results in very precise doses of radiation directly to the tumor while sparing healthy tissue, resulting in good control of the cancer and reducing unwanted side effects. Both systems have unique imaging controls that allow for visualization of the treatment field anatomy in order to precisely pinpoint the area requiring treatment.

Stereotactic Body Radiation Therapy (SBRT)

SBRT is a technique designed to deliver radiation therapy tumors anywhere in the body with pinpoint accuracy. This can even take into consideration the movement of a tumor based on your breathing patterns. Because of the accuracy of this treatment option a higher dose of radiation can be delivered over relatively fewer treatments. This treatment is mostly used for small tumors in the lung and liver when conventional surgery is not an option.


Brachytherapy is a type of internal radiation therapy in which radioactive sources are sealed in needles, seeds, wires or catheters and are placed directly into or near a tumor.

  • Low-Dose-Rate Brachytherapy involves radiation sources that deliver radiation over a period of a few days. These can be temporary implants, in which case the source is removed after a specific period of time. Or, a permanent implant can be used, in which case the sources are placed directly into the tumor tissue. The radioactivity in the implant decays or dwindles at such a quick rate, that they are safe to remain within the body.
  • High-Dose-Rate Brachytherapy is a specialized form of radiation therapy that involves the temporary placement of a small radioactive source into the center of a tumor using special catheters and applicators. The source remains in the tumor for a specific number of minutes during each treatment, and is then removed. The patient typically receives three to five of these treatments.

State-of-the-Art Radiation Therapy Equipment

Photo courtesy of: varian.com
Varian TrueBeam

The Varian TrueBeam treatment system is a linear accelerator that is equipped with a number of different imaging options. These imaging options enable therapists to visualize the treatment area during each treatment to ensure that the beam is exactly where it needs to be for optimal, accurate treatment. The TrueBeam also has the ability to shape the radiation beam, allowing for safe and highly-accurate treatment fields that target only the cancerous areas, while sparing healthy tissue in the surrounding area. The TrueBeam system allows for a number of options that can be customized for each individual patient, including different radiation beam intensity levels.

TomoTherapy HiArt
Photo courtesy of: accuray.com
Photo courtesy of: accuray.com

The TomoTherapy HiArt system from Accuray is designed with a Computerized Tomography (CT) imaging system that takes a CT scan of the patient prior to the delivery of each and every treatment. The information from the scan allows therapists and physicians to precisely position the patient before delivering treatment. This ensures that each treatment is accurate, safe, and of the highest quality. The TomoTherapy machine revolves around the patient, which allows for multiple entry sites with the radiation beam. Additionally, it features continuous beam-shaping so that only the areas on the body that require radiation are treated, while healthy surrounding tissues is spared.