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Radiation Treatments at the University of Colorado Cancer Center

The University of Colorado Cancer Center’s Radiation Therapy Clinic provides leading-edge treatment options for patients with cancer and other conditions.

Click a heading below to get an overview of the treatment. Our specialists in radiation therapy know which methods are most effective to treat your condition.

3-D (three-dimensional) conformal treatment

External beam therapy that uses a CT scan to show the tumor’s exact location, size and shape. We use this information to aim the radiation beams exactly at the tumor, which shrinks the dose your normal tissue gets.

Tomotherapy Hi-Art treatment system

The TomoTherapy® Hi-Art® treatment system uses a unique CT scanner design to deliver radiation continuously from all angles around the patient. It features patented beam-modulating technology that divides a single beam into many smaller, narrower "beamlets" – and more angles translates to more precise treatments.


University of Colorado Hospital's TomoTherapy Treatment Facility is dedicated to providing this advanced cancer treatment.

Body and brain stereotactic radio surgery: Shaped Beam Surgery

We are national leaders in this type of minimally invasive treatment. Novalis® Shaped Beam Surgery is often used when traditional surgery is not possible because of your general health, age or the cancer’s location.


Shaped Beam Surgery can be used to treat:

  • Arteriovenous malformations (AVMs)
  • Brain metastases/Gliomas
  • Acoustic neuromas
  • Intractable seizures
  • Pediatric brain tumors
  • Recurrent brain tumors
  • Pituitary adenomas
  • Meningiomas of the skull base
  • Craniopharyngiomas
  • Trigeminal neuralgia
  • Spine, prostate, liver and lung malignancies

High-dose-rate remote afterloaded brachytherapy

Radioactive material sealed inside needles, seeds, wires or catheters is placed directly into or near a tumor.

  • Also called internal radiation, implant radiation or interstitial radiation therapy.
  • We are the only Radiation Therapy Oncology Group-approved site in Colorado that can perform brachytherapy for locally advanced prostate cancer.

Low-dose-rate permanent seed implants

Radioactive seeds are implanted into a body site, usually the prostate, where they give off radiation. The amount of radiation decreases over time until the seeds are no longer radioactive.

Total Body Irradiation

The entire body receives a low dose of radiation to wipe out the bone marrow before a bone marrow transplant.

Virtual planning and treatment simulation via MRI/CT fusion

Our PhD-level scientists merge the information about your cancer gathered through an MRI and CT scan to determine exactly where the tumor is located. We use this information to plan for 3-D conformal treatment and Intensity Modulated Radiotherapy (IMRT).

Intensity Modulated Radiotherapy (IMRT)

We modify the amount of radiation from external beam therapy by using multiple blocks and shields during treatment. By adjusting the radiation’s intensity, we can make sure the tumor gets the optimum dose and normal tissue and structures get minimized doses.

  • We are the only Radiation Therapy Oncology Group-approved site in the Rocky Mountain region allowed to perform IMRT for national research studies.
  • We have extensive experience using IMRT.


The Radiation Oncology Group at the University of Colorado has extensive experience using this technique and is the only RTOG approved site in the Rocky Mountain region allowed to perform IMRT for national protocols.

Gamma Knife Therapy

Gamma Knife

The specialized radiation technology at the Rocky Mountain Gamma Knife Center allows neurosurgeons and radiation oncologists to more effectively treat small- to moderate-sized brain tumors both benign and malignant, including acoustic neuromas, with precision-focused Gamma radiation.


The Gamma Knife allows for as many as 192 distinct beams of Gamma radiation to converge on a single target, obliterating lesions with pinpoint precision.


Cancer Resource Center


8:30 a.m. to 4 p.m.
Monday through Friday


University of Colorado Cancer Center
1665 Aurora Court
Mail Stop F-704
Aurora, CO 80045


Laura Woollen, LSW
American Cancer Society Patient Navigator
(720) 848-0316

Cancer Counseling Line

Monday - Friday
8:30 am to 5 pm MT

A FREE telephone counseling service designed to help all people who are affected by cancer.