igrtonline.com is an online education portal for courses related to Image Guided Radiation Therapy from the Department of Radiation Oncology at Tata Medical Center, Kolkata, India.The course IGRT-Principles and Practice is kindly funded by an unrestricted educational grant from Varian Medical Systems.For all queries, contact the site coordinator Dr Indranil Mallick (indranil.mallick@igrtonline.in)