FPGA Implementation of Synthetic Aperture Algorithm for Ultrasound Imaging by Huang Hui Juan M-B1-5517-2 Thesis Supervisor: Prof. Vai Mang I Thesis Co-supervisor: Dr. Pun SioHang Department of Electrical and Computer Engineering, Faculty of Science and Technology Ultrasound imaging is the most widely-used non-ionized real time diagnostic tool in clinical applications because of its convenience to use and low radiation. So it plays a vital role in medical diagnosis. Synthetic aperture imaging algorithm, which combines sub-aperture elements to form high resolution image, can improve image quality in vivo ultrasound image. However, large computation resource is generally required for the implementation of SA. The thesis studies a parallel structural design for Synthetic aperture imaging algorithm that can be realized in Field Programmable Gate Array (FPGA), so that light weight and miniaturized design can be achieved. With this method, we are able to calculate the parallel computational resources and control the operations of delay calculation such as apodization generator, interpolation unit and recursive compounding, which characterize with saving hardware resource and implementing in low power. The proposed design has been validated by MATLAB and was employed to construct a high resolution ultrasound imaging from the raw data of 128 array transducer elements. The processing time is about 2.6ms theoretically, which should be alright for usage.