The Design of GPU(Graphical Processing Unit) will well suitable for express the data parallel computations because GPU will specialized for parallel and today's digital images in medical are huge volume of collections in every day, however medical imaging produces demand to improve the medical diagnosis and procedures. This survey is provide graphical processing computations and hardware require to compute and give better information for diagnosis of Cancer Treatment using Radiation Therapy. It is important techniques to increase quality of medical image data clinically under pressure to make enriched data and improve accurate treatment and decrease the complications. © 2013 IEEE.