What are the main factors that your look at or that help determine the type of radiation treatment/techniques to be used to treat various cancers?
A number of factors must be evaluated when making decisions about radiation treatment. Key factors are how extensive the tumor is and, when treating the primary tumor, whether any draining lymph node [lymph nodes that drain lymph from the area around the tumor] are affected or might be at high enough risk for harboring disease. The location of the tumor is also important. We have to take into consideration any surrounding critical structures, such as major organs, the spinal cord, or normal bowels that may also receive radiation, and monitor the doses of radiation that these structures are getting. The location of the tumor also determines how the fields of radiation are arranged. For example, if the tumor is in the breast or on the arm, we arrange the fields depending upon where the tumor is in relation to the critical structures. MRI and CT are decade’s old technologies – how are these older techniques being incorporated into newer types of radiation therapy? When planning treatment
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