Imaging in Radiation Oncology In Vivo Validation of Elekta ’ s Clarity Autoscan for Ultrasound-based Intrafraction Motion Estimation of the Prostate During Radiation Therapy

Reprint requests to: Alexander. Grimwood, therapy and Imaging, The Institute of Cancer R Sutton, London, SM2 5NG, UK. Tel: þ44 20 grimwood@icr.ac.uk K.T. was responsible for the statistical anal NHS funding was provided to the Nati Research Biomedical Research Centre at the Ro The Institute of Cancer Research. This resea Cancer Research UK under programs C335 A23557. Conflict of interest: A.T. reports support research fellow working on other projects (not personally has received honoraria and travel gr meeting attendance. J.B. reports grants from C the Engineering and Physical Sciences Res