Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Maxim Zaitsev"'
Autor:
Gerrit Schultz, Daniel Gallichan, Matthias Honal, Hans Weber, Juergen Hennig, Maxim Zaitsev, Walter R Witschey
Publikováno v:
Magnetic Resonance in Medicine. 73:857-864
PurposeIn this work, the limits of image reconstruction in k-space are explored when non-bijective gradient fields are used for spatial encoding. TheoryThe image space analogy between parallel imaging and imaging with non-bijective encoding fields is
Autor:
Klaas P. Pruessmann, Maxim Zaitsev, Chris A. Cocosco, Anna Welz, Christoph Barmet, Juergen Hennig, Daniel Gallichan, Frederik Testud, Andrew Dewdney, Kelvin J. Layton
Publikováno v:
Magnetic Resonance in Medicine. 73:1340-1357
PurposePatLoc (Parallel Imaging Technique using Localized Gradients) accelerates imaging and introduces a resolution variation across the field-of-view. Higher-dimensional encoding employs more spatial encoding magnetic fields (SEMs) than the corresp
Publikováno v:
Magnetic Resonance in Medicine. 72:112-123
Purpose Nonlinear spatial encoding magnetic fields allow excitation and geometrically matched local encoding of curved slices. However, the nonlinearity of the fields results in a varying slice thickness. Within this study, the technique is combined
Publikováno v:
Magnetic Resonance in Medicine. 71:1002-1014
Purpose: Nonlinear spatial encoding magnetic fields result inan inhomogeneous image resolution. Within this study, thischaracteristic property of nonlinear encoding is investigatedwith regard to its potential to accelerate MRI acquisitions.Theory: A
Autor:
Maxim Zaitsev, Frederik Testud, Klaas P. Pruessmann, Chris A. Cocosco, Jürgen Hennig, Christoph Barmet, Daniel Gallichan, Anna Welz, Kelvin J. Layton
Publikováno v:
Magnetic Resonance in Medicine. 70:684-696
It has recently been demonstrated that nonlinear encoding fields result in a spatially varying resolution. This work develops an automated procedure to design single-shot trajectories that create a local resolution improvement in a region of interest
Autor:
Maxim Zaitsev, Jürgen Hennig, Daniel Gallichan, Florian Knoll, Kristian Bredies, Gerrit Schultz, Rudolf Stollberger
Publikováno v:
Magnetic Resonance in Medicine. 70:40-52
In the case of radial imaging with nonlinear spatial encoding fields, a prominent star-shaped artifact has been observed if a spin distribution is encoded with an undersampled trajectory. This work presents a new iterative reconstruction method based
Publikováno v:
Magnetic Resonance in Medicine. 69:1650-1656
Echo-planar imaging is a fast and commonly used magnetic resonance imaging technique with applications in diffusion weighted and functional MRI. Fast data acquisition in echo-planar imaging is accomplished by the extended readout, which also introduc
Autor:
Daniel Gallichan, Chris A. Cocosco, Gerrit Schultz, Wilfried Reichardt, Maxim Zaitsev, Jürgen Hennig, Hans Weber, Anna Welz, Sebastian Littin, Walter R Witschey
Publikováno v:
Magnetic Resonance in Medicine. 69:1317-1325
In this work, the concept of excitation and geometrically matched local in-plane encoding of curved slices (ExLoc) is introduced. ExLoc is based on a set of locally near-orthogonal spatial encoding magnetic fields, thus maintaining a local rectangula
Autor:
Jun-Young Chung, Se-Hong Oh, Myung-Ho In, Zang-Hee Cho, Oliver Speck, Maxim Zaitsev, Young-Bo Kim
Publikováno v:
Magnetic Resonance in Medicine. 68:1239-1246
Despite its wide use, echo-planar imaging (EPI) suffers from geometric distortions due to off-resonance effects, i.e., strong magnetic field inhomogeneity and susceptibility. This article reports a novel method for correcting the distortions observed
Autor:
Chris A. Cocosco, Jürgen Hennig, Hans Weber, Gerrit Schultz, Anna Welz, Maxim Zaitsev, Daniel Gallichan, Walter R Witschey
Publikováno v:
IEEE Transactions on Medical Imaging. 30:2134-2145
We present reconstruction methods for radial magnetic resonance imaging (MRI) data which were spatially encoded using a pair of orthogonal multipolar magnetic fields for in-plane encoding and parallel imaging. It is shown that a direct method exists