Image guided radiotherapy (IGRT) has completely transformed the radiotherapy landscape over the past few decades. It has enabled the confident employment of more conformal therapy techniques like Intensity Modulated Radiotherapy (IMRT) and Volumetric Modulated Arc Therapy (VMAT), and has paved the way for safer and geometrically more accurate delivery of hypofractionated treatments. It holds the future for the goals of adaptive radiotherapy and 4D techniques with smaller margins and consequently smaller treatment volumes. This presentation will give an overview of the IGRT techniques in current use, a brief look back to how the present techniques have evolved and an exploration of where the direction of travel most likely lies. Present day 2D and 3D x-ray-based techniques for online and offline use, will be examined, together with the role of non-ionising radiation based methods and 4D techniques. Safe implementation will be considered by looking at the process of commissioning and implementation, especially in terms of training for all involved staff groups and the relationship to guidance for both dose burden and incident monitoring and reporting.

Educational aim:
• To understand and refresh knowledge of the current general use and development of IGRT

Further reading:
• On-treatment verification imaging: a study guide for IGRT. Mike Kirby and Kerrie-Anne Calder, 2019, CRC Press

1 CPD credit.
Watch the video and complete the online self-reflection form. Go to "My events" to download your certificate. You must login to watch the video and receive CPD.