OSF Cancer Center

Bloomington Cancer Center (Exterior)

Learning you or someone close to you has cancer can be a scary and overwhelming time.

The team at the OSF Cancer Center at OSF St. Joseph Medical Center in Bloomington, Illinois, works together and is by your side throughout your journey – from diagnosis through treatment to survivorship.

From highly specialized treatments and technology to survivorship programs and rehabilitation, we're here to help you achieve the best possible outcomes.

Our programs and services are wrapped around you in an environment that fosters compassion, care and concern for your total well-being.

While we have access to the expertise of the cancer services team at  OSF Saint Francis Medical Center in Peoria,  your care will be provided right here in Bloomington, keeping you close to home.


  • Access to clinical trials
  • Genetic counseling
  • Infusion
  • Nurse navigator
  • Nutrition counseling
  • Pastoral care
  • Radiation
  • Social work

Radiation Therapy

Your doctor will determine your radiation therapy plan, which may include details such as the dose of radiation to be delivered, the appropriate angles from which to deliver the radiation, the number of sessions, possible side effects associated with your treatment and follow-up care after treatment is completed.

OSF St. Joseph has partnered with Alliance Oncology to provide a mobile radiation therapy unit with a state-of-the-art Halcyon™ system by Varian Medical Systems Inc. This sophisticated technology allows for CT image-guided radiation therapy.

What You Can Expect

  • This system conforms the radiation beam to the exact size and shape of the tumor, which allows for more precise treatment of the affected area and reduces the amount of radiation to the surrounding healthy tissue.
  • The Halcyon system is designed to allow high-speed treatments. This helps to minimize treatment time and reduces the risk of patient movement during the treatment, increasing the patient's safety.
  • The machine is smooth and quiet with soft lighting, providing a soothing, calming atmosphere to receive your radiation treatment.

Other Things to Expect

  • Before each day's treatment, you may be asked to change into a gown.
  • You'll be assisted in getting into position on a wide treatment couch that moves through the machine for simultaneous imaging and treatment.
  • A two-way intercom and a couch-mounted camera allow you and your therapist to communicate throughout your treatment session.
  • If a facemask, mold or other device was created for use during your treatment, it will be placed on you or under you. The couch will be adjusted, so the laser light shines on the mark on your skin.
  • While you are on the couch, a scan will be taken immediately before treatment to ensure you are properly aligned for treatment.
  • Please allow 40 minutes for your daily radiation treatments. This will include the time you enter the unit for treatment until you exit the unit after your radiation treatment.
  • You will see the nurse and physician weekly on an assigned day, immediately after your treatment on the unit, so please plan for additional time for this appointment.
  • Please let the radiation therapist know you would like to talk with the nurse when you come for daily treatment.

How Treatment is Delivered

The radiation is delivered by a machine called a linear accelerator. Most linear accelerators have a gantry, which is the part out of which the radiation beam extends.

The gantry can be rotated around to allow radiation to be delivered to the tumor from any angle as the treatment couch moves.

During treatment, the gantry will move around you to deliver the radiation. The radiation beam is not visible, so you will not see it.

Post-Treatment and Follow-Ups

After completing treatment, your first checkup typically is between one and three months, with subsequent checkups scheduled at six-month intervals. This may vary, depending on your situation.

Contact Us

To contact the OSF Cancer Center, please call (309) 661-5240.