Radiation Oncology

TrueBeam at Mary Greeley Medical Center

The TrueBeam system
at Mary Greeley.

Radiation therapy, used alone or in combination with surgery and chemotherapy, is often an integral component in the treatment of cancer. This is done on an outpatient basis, usually five times a week for five to six weeks.

The William R. Bliss Cancer Center at Mary Greeley Medical Center has two linear accelerators used to treat cancer patients, including the state-of-the-art TrueBeam system.

The TrueBeam system opens the door to new possibilities for the treatment of challenging cases such as cancers in the lung, breast, abdomen, and head and neck as well as other cancers that are treatable with radiotherapy.


Mary Greeley Medical Center, North Addition
1111 Duff Ave, Ames
Hours: 8:00 a.m.-4:30 p.m., Monday-Friday



The Mary Greeley Medical Center Radiation Oncology Unit offers the latest high-tech therapies, including:

  • Linear accelerator radiation 
  • Three-dimensional conformal radiation therapy (3-D CRT)
  • Intensity modulated radiation therapy (IMRT)
  • Low-dose brachytherapy (in which radioactive seeds or sources are placed near the cancer itself)
  • HDR (High Dose Rate) Brachytherapy
  • Stereotactic Radiosurgery (SRT)
  • Respitory Gated Treatment planning for lung patients


Our staff of board-certified radiation oncologists, radiation therapists, dosimetrists (specialists in monitoring radiation levels) and registered nurses, uses a multidisciplinary approach to make treatment as comfortable and effective as possible. We inform patients about what to expect and how we will help them manage their treatment.

Throughout treatment, nurses draw on a number of resources to help with any side effects and dietary needs, as well as to provide any needed psychological, emotional or spiritual support.

A board-certified medical physicist regularly checks the safety and accuracy of equipment and individual treatments, ensuring that the exact level of therapy prescribed is being delivered. Our medical oncologists do weekly evaluations of each patient's progress. After treatments are completed, we provide follow-up care for any latent side effects of the therapy.


Radiation Answers

Radiation Answers

Get answers to common questions many people have about cancer and radiation therapy.

Multimedia Health Library Topics

Cancer Learning Center

Breast Cancer

Lung Cancer

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