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Abstract #4270

Implementing Deep learning MRI reconstruction on a RISC-V Hardware Accelerator

Nikhil Deveshwar1,2, Sohum Desai2, Yakun Sophia Shao2, and Peder E.Z. Larson1
1Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, CA, United States, 2Electrical Engineering and Computer Science, University of California, Berkeley, Berkeley, CA, United States

Synopsis

Keywords: Image Reconstruction, Image Reconstruction

Motivation: Deep Learning MRI reconstruction requires access to high-performance compute hardware (GPUs) but reconstruction times can still remain slow.

Goal(s): Use domain specific hardware accelerators to speed up deep learning MRI reconstruction compared to classic CPU/GPU implementations.

Approach: We use an open source SoC design and simulation framework, Chipyard, and a neural network accelerator, Gemmini, to run inference on a pretrained MRI reconstruction network. The results are measured on FireSim, an FPGA simulation framework.

Results: Simulated inference times of pretrained models on Gemmini are much faster compared to CPU and show similar image quality metrics compared to the inference run on a GPU.

Impact: Shows the potential of developing custom compute hardware designed to accelerate deep learning MRI reconstruction.

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Keywords