Radiation therapy is an important clinical option for the alleviation of pain and suffering for cancer patients and is used for palliative treatments to prevent pathologic bone fractures or tumor-induced obstructions, bleeding and pain that is resistant to other treatments.
However, standard palliative radiation therapy treatment techniques often offer poor conformality and expose large volumes of normal tissues to radiation-induced toxicities, causing significant side effects for an already ill patient with a limited life expectancy.