Design of an MR image processing module on an FPGA chip

作者：Li Limin^*; Wyrwicz Alice M

来源：Journal of Magnetic Resonance, 2015, 255: 51-58.

DOI：10.1016/j.jmr.2015.03.007

• FPGA
• Real time
• Image processing
• 2D FFT
• Graphical coding

We describe the design and implementation of an image processing module on a single-chip Field-Programmable Gate Array (FPGA) for real-time image processing. We also demonstrate that through graphical coding the design work can be greatly simplified. The processing module is based on a 2D FFT core. Our design is distinguished from previously reported designs in two respects. No off-chip hardware resources are required, which increases portability of the core. Direct matrix transposition usually required for execution of 2D FFT is completely avoided using our newly-designed address generation unit, which saves considerable on-chip block RAMs and clock cycles. The image processing module was tested by reconstructing multi-slice MR images from both phantom and animal data. The tests on static data show that the processing module is capable of reconstructing 128 x 128 images at speed of 400 frames/second. The tests on simulated real-time streaming data demonstrate that the module works properly under the timing conditions necessary for MRI experiments.

• 出版日期2015-6
• 单位西北大学