Newsletter of Karnataka Chapter Association of Medical Physicists of India An affiliate of Indian National Science Academy and International Organization for Medical Physics ISSN : 2348-5493

Radiation therapy for the treatment of cancer has come a long way over the past 20 years. The techniques for delivering external beam radiation to tumor sites have improved dramatically with the introduction of Intensity Modulated Radiation Therapy (IMRT), Volumetric Modulated Arc Therapy (VMAT), etc. These advancements result in higher doses of radiation delivered more accurately to the tumor with the goals of better tumor control, higher survival rates, and fewer side effects. These techniques facilitate treatment of volumes with tight margins and hence the treatment outcome heavily relied on the patient setup accuracy and real-time information on the patient movement during treatment.