Vasek Polak Radiation Therapy Center

At the Vasek Polak Radiation Oncology Department, our patients have access to leading-edge radiation therapy technologies to shrink and kill cancer cells. Our team delivers precise radiation therapy using minimally invasive techniques, while sparing healthy tissue, and maximizing patient comfort. We offer radiation therapy to treat just about every type of cancer. Radiation therapy is also useful in treating some noncancerous (benign) tumors.

Learn about our different radiation therapy treatment options below.

Radiation Therapy Center Team

Intraoperative Radiation Therapy

Intraoperative Radiation Therapy (IORT) is a complete, concentrated dose of radiation that is delivered in one treatment during surgery. A miniaturized x-ray source is used to deliver a full course of targeted radiation directly within the tumor cavity reducing risk to nearby healthy tissue including the heart, lungs, and ribs.


  • Targeted treatment
  • Fewer side effects
  • Reduced costs
  • Increased convince
  • Improved quality of life
Intraoperative Radiation Therapy

Stereotactic Radiosurgery

Stereotactic Radiosurgery (SRS) is a non-surgical radiation therapy used to treat tumors of the brain and spine. We use a “frameless” open mask immobilization technique, maximizing treatment options and minimizing discomfort associated with a fixed head frame system.


  • Delivers high-intensity treatments
  • Reaches deep-seated tumors with knifelike precision
  • Detects slight patient movement to protect healthy tissue

Learn More at the Pacific Neuroscience Institute

Stereotactic Radiosurgery

High Dose Rate Brachytherapy

High Dose Rate Brachytherapy (HDR) is a powerful form of internally delivered radiation therapy that destroys many types of cancers including skinprostate and breast.

With any radiotherapy technique, the goal is the same: to conform the dose to the size and shape of the target while limiting side effects by sparing the surrounding healthy anatomy. In brachytherapy, radiation falls off very rapidly from the target area, easily accomplishing this objective.

High Dose Rate Brachytherapy

Stereotactic Body Radiation Therapy

Stereotactic Body Radiotherapy (SBRT) is a non-surgical radiation therapy used to treat small tumors in the lung, liver, pancreas, spine, and other areas of the body. Optical Surface Monitoring accounts for movement from patient’s respiratory cycle during treatment for millimeter alignment and precision.

SBRT offers the benefits of precision to treat tumors and abnormalities that are:

  • Difficult to reach
  • Located close to vital organs/anatomic regions that are subject to movement within the body


Stereotactic Body Radiation Therapy visual

Superficial Radiation Therapy

Leading the way in radiotherapy for skin cancers and dermatological conditions, Providence Saint John’s Health Center has the only superficial treatment unit on the west-side with the ability to treat skin lesions non-surgically, with minimal side effects and excellent cosmesis. Superficial Radiation Therapy (SRT), is a proven surgical method for non-melanoma skin cancers.

Clinical conditions treated include:

  • Basal cell carcinoma
  • Squamous cell carcinoma
  • Keloid’s (following surgical excision)
  • Mycosis fungoides
Superficial Radiation Therapy