Image Guided Radiotherapy (IGRT) utilizes frequent imaging to enhance treatment accuracy for cancer patients, employing modalities like Cone-Beam CT, PET, and MRI. It involves techniques such as External Beam Radiation Therapy (EBRT) and Brachytherapy, allowing precise targeting of tumors while minimizing damage to surrounding tissues. IGRT offers several advantages, including increased precision, improved monitoring, and potentially shorter treatment schedules, making it suitable for tumors near vital organs.