Gpus General-purpose Computing Applications In Ct

As graphics processing unit (GPU) has been developing rapidly recently with a speed over Moor's law, various applications about computer graphics have grown greatly. At the same time, the highly processing power, parallelism and programmability available nowadays on the current GPU make the general-purpose computation available.There are many applications about general-purpose computation on GPU in CT. In this paper, we make simulations of the three-dimensional CT data using the technique of general-purpose computation on GPU. Comparing to the conventional methods, efficiency of data simulation from our method highly advances. Then we made the parallel fan-beam scan using the technique of general-purpose computation on GPU. Our numerical experiments show that the speed of image reconstruction is highly enhanced comparing to the conventional methods using the CPU.In this paper, we implement the Fast Fourier Transform Algorithm (method) on GPU using the technique of general-purpose computation on GPU. Then, we apply this result to the filtering part of the filtering back-projection reconstruction algorithm.