IMRT, or Intensity-Modulated Radiation Therapy, is an advanced form of radiation therapy used to treat cancer. It allows doctors to deliver precise doses of radiation to tumors while minimizing exposure to surrounding healthy tissues. This technique uses computer-controlled linear accelerators to modulate the intensity of the radiation beams, ensuring that the treatment is tailored to the shape and size of the tumor. The main advantage of IMRT is its ability to target complex tumor shapes, making it particularly effective for cancers located near critical organs. By reducing damage to healthy tissue, IMRT can lead to fewer side effects and improved quality of life for patients undergoing cancer treatment.