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Figure 1 | Journal of Cardiovascular Magnetic Resonance

Figure 1

From: Image-based 3D non-rigid respiratory motion correction for free-breathing thoracic MR angiography

Figure 1

Workflow of the proposed strategy. Complex respiratory motion is modeled using voxel-based linear translations, which are estimated using 3D image registration after data binning using a respiratory surrogate signal. The voxel-based motion vector is represented by fewer approximations (N = 50) after k-means clustering for reduced computation. Linear k-space phase correction is performed for each motion vector and combined with reference bin for image reconstruction. The final output image is generated by pixel-based image fusion where the voxel value is selected from the motion corrected images (1..N) with the corresponding motion vector.

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