Your Location: Set Location
See services nearest you.
Essentia Health Menu
Home > Services & Specialties > Cancer Care Services > Radiation Oncology
Radiation therapy uses invisible, painless high-energy waves to destroy, shrink, or stop the growth of cancer tumors. Trust your care team at Essentia Health to educate you and help you feel comfortable throughout treatment.
During external radiation therapy, the most common type of radiation treatment, you lie near a machine called a linear accelerator. The machine sends X-rays through your body into the tumor.
The time you're exposed to the radiation beam is often only a few minutes. The length of your appointment will depend on the custom treatment plan your doctor creates for you. Treatment usually lasts 15 to 30 minutes and includes time to do imaging to position you correctly.
Healthy tissue near your tumor can be protected from radiation.
Trust our team to deliver precise radiation and create a treatment plan tailored to you with careful planning. Before treatment, we’ll take a CT scan. This allows your doctor to pinpoint the tumor and decide on the treatment amount.
During the CT scan, also called a simulation scan, you'll lay in the position you'll be in during radiation treatment. After your scan, we’ll place small marks on your skin to help you stay in the correct position during treatment. We may also create a custom device to help you stay still. The planning process is painless, and your care team will guide you along the way.
For internal radiation treatment, or brachytherapy, small, radioactive pellets are placed inside your body near or in your tumor. This method harms as few healthy cells as possible.
If you’re a candidate for low-dose rate brachytherapy for prostate cancer, we can precisely target your tumor with surgery. You may also hear this treatment called seed implants or permanent brachytherapy, because the radioactive pellets are left in place even after they stop giving out radiation.
If you have cancer in your thyroid, bones, or prostate, you may receive radioactive medicine by mouth or through a vein. The medicine travels through your blood and attaches to cancer cells to destroy them.
Your radiation therapy care team may include:
Learn about a fairly new therapy called Stereotactic Body Radiation Therapy (SBRT) for treating prostate cancer.
View video transcript (DOC) Listen to audio description (MP3)
You’ll need a referral from your primary care provider or a specialist for this service.