University Hospitals Plymouth NHS Trust 1 article published in JoVE Medicine Radiation Planning Assistant - A Web-based Tool to Support High-quality Radiotherapy in Clinics with Limited Resources Laurence Edward Court1, Ajay Aggarwal2, Hester Burger3, Carlos Cardenas4, Christine Chung1, Raphael Douglas1, Monique du Toit5, Anuja Jhingran1, Raymond Mumme1, Sikudhani Muya6, Komeela Naidoo5, Jerry Ndumbalo6, Tucker Netherton1, Callistus Nguyen1, Adenike Olanrewaju1, Jeannette Parkes3, Willie Shaw7, Christoph Trauernicht5, Melody Xu8, Jinzhong Yang1, Lifei Zhang1, Hannah Simonds9, Beth M. Beadle10 1The University of Texas MD Anderson Cancer Center, 2Guy’s and St. Thomas’ Hospital, 3Groote Schuur Hospital and University of Cape Town, 4University of Alabama at Birmingham, 5Tygerberg Hospital and Stellenbosch University, 6Ocean Road Cancer Institute, 7University of the Free State, 8University of California-San Francisco, 9University Hospitals Plymouth NHS Trust, 10Stanford University This protocol describes a series of automated tools designed for high-quality radiotherapy autocontouring and autoplanning that are being packaged into a web-based service to maximize robustness and scalability while minimizing operational costs.