In this work, three methods for measuring signal-to-noise ratio (SNR) performance of deep learning (DL) denoising image reconstruction were evaluated. Images reconstructed using a vendor prototype DL reconstruction algorithm were compared to conventional Fourier reconstruction. Phantom experiments were performed using a single-channel head coil and a 32-channel head coil to assess the effects of parallel imaging acceleration in combination with DL reconstruction on SNR performance. We found excellent agreement between the three SNR measurement methods for both Fourier and DL reconstruction, and found that DL reconstructed images have similar g-factor performance patterns as Fourier reconstructed images.
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