A few days are generally necessary to plan out the treatment and to construct individualized blocks. These blocks are made of a high density metal and allow for the shape of the radiation beam to be tailored to the needs of the individual patient. The dose of radiation necessary for optimal treatment of the malignancy will be determined and calculated by the Physics Staff at this time.
After completion of the above, the patient will return to start the treatment. At this appointment the planned radiation treatment fields (areas) will be set up on the patient. A simulation will be done on either the Simulator or on the actual treatment machine or on both.
After successful localization of the treatment fields and approval from the Radiation Oncologist the location of each field will be marked on the patient’s skin, usually with several small permanent tattoos. This process may take 30 to 60 minutes, and will generally occur later in the day.