Radiation can either emerge from radioactive materials placed within the body and close to the cancer cells, commonly known as brachytherapy or internal radiation therapy or through a machine outside the body which is known as external beam-radiation therapy.
A radioactive substance is inserted through mouth or through veins in systemic radiation therapy. This substance would travel through blood to the different tissues in the body.
Brain Cancer Radiation Therapy During Treatment at BLK Cyberknife Center
A radiation oncologist prescribes the radiation therapy based on factors such as:
- Type of cancer
- Size of cancer
- Location of the cancer inside the body
- The cancer’s proximity to normal tissues which are sensitive to the radiations
- The patient’s medical and general history
- Possibility of other types of cancer treatments for the patient
- Other factors such as medical conditions and age of the patient
Methods of radiation therapy administration