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MCS-MRI reconstruction on the acquired noiselet encoded and Fourier encoded data for different acceleration factors (up/down: phase encodes, left/right: frequency encode).

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posted on 12.05.2015, 02:50 by Kamlesh Pawar, Gary Egan, Jingxin Zhang

RF: shows reference image reconstructed from fully sampled Fourier encoded data; RN: shows reference image reconstructed from fully sampled Noiselet encoded data; (a)-(c): show images reconstructed using Fourier encoding for acceleration factor of 4, 8 and 16 respectively; (d)-(f): show the difference images using Fourier encoding for acceleration factor of 4, 8 and 16 respectively; (g)-(i): show images reconstructed using noiselet encoding for acceleration factor of 4, 8 and 16 respectively; (j)-(l): show the difference images using noiselet encoding for acceleration factor of 4, 8 and 16 respectively. The result here aligns with the simulation results and noiselet encoding outperforms Fourier encoding in preserving resolution. (A-H): Zoomed portion of phantom images reconstructed with Fourier encoding and noiselet encoding with different acceleration factors. (A): shows the original image reconstructed from fully sampled Fourier encoded data; (B), (C) and (D): show the Fourier encoded reconstructed images for acceleration factors of 4, 8 and 16 respectively; (E): shows the image reconstructed from fully sampled noiselet encoded data; (F), (G) and (H): show the noiselet encoded reconstructed images for acceleration factors of 4, 8 and 16 respectively demonstrating that noiselet encoding produces improved resolution images than than Fourier encoding at all acceleration factors.

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