Frequently Asked Questions

What is radiation and how does it work?

• It is a special type of high-energy x-ray that shrinks and/or destroys cancer cells.
• The machine used to deliver radiation therapy is called a linear accelerator.
• The linear accelerator directs the high energy x-rays at the tumor or tumor bed (site where tumor was removed).
• The total radiation dose is divided into daily treatments.  Treatments are given Monday through Friday.
• The number of treatments depends on the type of cancer and where it is located.  Treatments can last as long as 6 to 8 weeks. Your doctor will inform you of the number of treatments you need.
• During treatment, you will not feel or see anything. 
• The effects of the treatments continue for 6 to 8 weeks after you have finished treatment.
• You may start to notice the side effects after 2 to 3 weeks.  They are specific to where the radiation is given.  Your doctor and nurse will tell you what side effects you might have.
• You will be seen on a regular basis by your health care team, who will address your questions and concerns.  It is important to let them know if you start to have side effects of treatment.

What is simulation?

• It is the process of setting up the treatment area.
• Simulation can last up to a half an hour.
• Once all the work is done for simulation, a treatment plan is designed using a special computer system.

What is a Linear Accelerator?

Linear accelerators use a wave guide device that accelerates electrons to high velocity.  When the high speed electrons collide with a heavy metal target they release x-rays.