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Abstract #4952

Modified Homodyne reconstruction using a high-resolution phase in magnetic resonance images

Xinzeng Wang1, Daniel Litwiller2, Arnaud Guidon3, Tim Sprenger4, and Robert Marc Lebel5
1GE Healthcare, Houston, TX, United States, 2GE Healthcare, Denver, CO, United States, 3GE Healthcare, Boston, MA, United States, 4GE Healthcare, Stockholm, Sweden, 5GE Healthcare, Calgary, AB, Canada

Synopsis

Keywords: Image Reconstruction, Artifacts, Partial FourierA partial Fourier acquisition has been widely used for fast MR imaging. To reduce the truncation artifacts in partial Fourier image, Homodyne reconstruction is often used, and it exploits the conjugate symmetry in real-valued signal to recover the full k-space. However, the MR signal is complex-valued. Artifacts are commonly observed in Homodyne images in the regions of rapid phase change due to the interference of imaginary components of adjacent pixels. In this work, we proposed a modified Homodyne reconstruction to reduce the conventional Homodyne artifacts and truncation artifacts by using a high-resolution phase from a pre-trained deep-learning network.

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Keywords