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Jun 9 – 15, 2018
Woodlands Conference Center
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A Design of FPGA Based Small Animal PET Real Time Digital Signal Processing and Correction Logic

Jun 14, 2018, 2:35 PM
1h 30m
Woodlands Conference Center

Woodlands Conference Center

159 Visitor Center Dr, Williamsburg, VA 23185
Poster presentation Real Time System Architectures and Intelligent Signal Processing Poster 2


Mr Jiaming Lu (University of Science and Technology of China)


Small animal positron emission tomography (PET) is a high sensitivity and resolution PET device for small animal imaging. Flexibility, high efficiency, high precision charge measurement and position calculation are major demands of a practical PET system which asks for a high-quality analog front end and a digital signal processing module. To achieve higher efficiency and compatibility of multiple data processing modes, we design the real time digital signal processing logic of the small animal PET system, which implements 32-channel signal processing in a single Xilinx Artix-7 family of FPGA and integrates several functions, including 2D raw position calculation, crystal identification, events energy filtering, flood map and energy spectrum real time histogram, etc. A technical design of the Crystal Look-up Table (CLT) is applied here to reduce logic consumption in order to achieve the high integration and the simplification of the logic design. Besides, a series of on-line corrections are also integrated for higher resolution, such as, timing-energy correction, energy calibration to 511 keV photon peak with crystal granularity, timing offset correction with crystal granularity, etc. The pipe-line logic processes the signals at 125 MHz with a 1,000,000 events/s rate. To evaluate the performance of the logic, a series of initial testing are conducted. The results indicate that the logic achieves the expectations.

Description DSP
Country China
Minioral Yes
Institute USTC
Speaker Jiaming Lu

Primary authors

Mr Jiaming Lu (University of Science and Technology of China) Prof. Lei Zhao (University of Science and Technology of China)


Ms Peipei Deng (University of Science and Technology of China) Mr Bowen Li (University of Science and Technology of China) Mr Kairen Chen (University of Science and Technology of China) Prof. Shubin Liu (University of Science and Technology of China) Prof. Qi An (University of Science and Technology of China)

Presentation materials