Tomographic image reconstruction on the instruction systolic array

Instruction systolic arrays (ISAs) have been developed in order to combine the speed and simplicity of systolic arrays with the flexibility of MIMD pa rallel computer systems. ISAs are available as square arrays of small RISC processors capable of performing: integer and floating point arithmetic. In this paper we show that; the systolic control flow can be used for an effi cient reconstruction of images from its projections. The demand for fast im age reconstruction arises in the field of computerized tomography. It is sh own how the new parallel algorithm leads to a high-speed implementation on Systola 1024, the first commercial parallel computer with the ISA architect ure.