Radiotherapy: Theory and Practice

Radiotherapy or RT is a medical technique used for the treatment of cancer particularly, to kill or control the growth of malignant cells. The procedure uses ionizing radiation and is delivered by a linear accelerator. The radiation damages the DNA of cancerous tissue thereby leading to cellular death. Besides the tumor itself, the radiation may target the draining lymph involved with the tumor. RT is performed when cancer is localized to one area of the body. It can also be a part of adjuv...