
How long does radiation therapy last?
It is the most common radiation therapy treatment for cancer. Each session is quick, lasting about 15 minutes. Radiation does not hurt, sting, or burn when it enters the body. You will hear clicking or buzzing throughout the treatment and there may be a smell from the machine.
How many days a week should I get radiation?
You will get radiation for 1 to 5 minutes. During this time, you can breathe normally.
What happens before a radiation therapy session?
Accelerated fractionation radiation: a standard dose of radiation is given each day over a shorter amount of time (5 to 6 weeks) instead of the usual 7 weeks (for example, radiation is given 6 days a week over 5 weeks instead of the standard 5 days a week for 7 weeks)
How long will my cancer treatment take?
For each treatment, one or more sources of radiation (often pellets) are placed down through the tube and into the device for a short time and then removed. Treatments are typically given twice a day for 5 days in an outpatient setting. After the last treatment, the device is deflated and removed. Interstitial brachytherapy

What is the survival rate of radiation therapy?
The overall 5-year survival rate was 27%. For 105 patients treated definitively with radiation therapy, the median and 5-year survival rate figures were 26.0 months and 40%. For 149 patients treated with adjuvant radiation therapy, the 5-year survival rate was 62% (median survival rate not reached).
At what stage of cancer is radiotherapy used?
Radiotherapy may be used in the early stages of cancer or after it has started to spread. It can be used to: try to cure the cancer completely (curative radiotherapy) make other treatments more effective – for example, it can be combined with chemotherapy or used before surgery (neo-adjuvant radiotherapy)
Do tumors grow back after radiation?
Normal cells close to the cancer can also become damaged by radiation, but most recover and go back to working normally. If radiotherapy doesn't kill all of the cancer cells, they will regrow at some point in the future.Jul 6, 2020
Which is worse chemo or radiation?
A systemic treatment like chemotherapy or liquid radiation may have more off-target side effects than a local treatment. But local treatments that are administered only to the cancer site, like external beam radiation or solid internal radiation treatment, may have more extreme side effects in that area of the body.Sep 25, 2021
Overview
Why It's Done
Risks
- Side effects from radiation therapy differ significantly depending on the type of treatment and which tissues are treated. Side effects tend to be most significant toward the end of your radiation treatment. After your sessions are complete, it may be several days or weeks before side effects clear up. Common side effects during treatment may include: 1. Mild to moderate fatigu…
How You Prepare
- Before your radiation treatments, you'll meet with your radiation therapy team, which may include: 1. A radiation oncologist,a doctor who specializes in treating cancer with radiation. Your radiation oncologist determines the appropriate therapy for you, follows your progress and adjusts your treatment, if necessary. 2. A radiation oncology medical physicist and a dosimetrist,who make c…
What You Can Expect
- Radiation therapy usually begins three to eight weeks after surgery unless chemotherapy is planned. When chemotherapy is planned, radiation usually starts three to four weeks after chemotherapy is finished. You will likely have radiation therapy as an outpatient at a hospital or other treatment facility. A common treatment schedule (course) histori...
Results
- After you complete radiation therapy, your radiation oncologist or other medical professionals will schedule follow-up visits to monitor your progress, look for late side effects and check for signs of cancer recurrence. Make a list of questions you want to ask members of your care team. After your radiation therapy is completed, tell your medical professional if you experience: 1. Persiste…
Clinical Trials
- Explore Mayo Clinic studiesof tests and procedures to help prevent, detect, treat or manage conditions.