Clinical Sciences Practice Test: Radiation Therapy — Flashcards

Radiation therapy, also known as radiotherapy, is a cancer treatment that uses high doses of radiation to kill cancer cells and shrink tumors. It's often used in combination with other cancer treatments, such as chemotherapy or tumor removal surgery. 

Radiation therapy can also be used in low doses to create x-rays that can help doctors see inside the body. 

Some types of radiation therapy include:
Proton therapy: Uses a beam of protons to deliver radiation directly to the tumor
MRI linear accelerator: Tracks soft tissue-based tumors in real time during radiation
Stereotactic body radiation therapy (SBRT): Has a narrower beam of radiation 

Some side effects of radiation therapy include:
Sore skin
Skin color changes
Dry, itchy skin
Blistering and peeling 

These side effects usually start 1–2 weeks after treatment begins. You should tell your care team if you notice any skin changes. 
During radiation therapy, you may need anesthesia to block pain while the radioactive sources are placed in your body. Most people feel little to no discomfort during this treatment. However, some people may experience weakness or nausea from the anesthesia. 
You should also avoid using any powders, creams, perfumes, deodorants, body oils, ointments, lotions, or home remedies in the treatment area while you're being treated or for several weeks afterward. You should only use these products if your doctor or nurse approves. 
 

Topics include: Radiation therapy, oxygen effect, diathermy, radiation measurement and its calculations.