Essays about: "Gridding Reconstruction"

Found 2 essays containing the words Gridding Reconstruction.

1. 1. In-Plane Motion Correction in Reconstruction of non-Cartesian 3D-functional MRI

   University essay from Datorseende; Tekniska högskolan

   Author : Anette Karlsson; [2011]
   Keywords : MRI; fMRI; PRESTO-CAN; Motion Correction; Radial Sampling Pattern; Fourier domain; Circular Correlation; Gridding Reconstruction;

   Abstract : When patients move during an MRI examination, severe artifacts arise in the reconstructed image and motion correction is therefore often desired. An in-plane motion correction algorithm suitable for PRESTO-CAN, a new 3D functional MRI method where sampling of k-space is radial in kx-direction and kz-direction and Cartesian in ky-direction, was implemented in this thesis work. READ MORE

3. 2. Method for Acquisition and Reconstruction of non-Cartesian 3-D fMRI

   University essay from Bildbehandling; Tekniska högskolan

   Author : Per Thyr; [2008]
   Keywords : MRI; PRESTO; PRESTO CAN; rotation; sequence development; image reconstruction; gridding; phase correction;

   Abstract : The PRESTO sequence is a well-known 3-D fMRI imaging sequence. In this sequence the echo planar imaging technique is merged with the echo-shift technique. This combination results in a very fast image acquisition, which is required for fMRI examinations of neural activation in the human brain. READ MORE