K-space description for MR imaging of dynamic objects.
The spatial frequency (k) space concept is extended to describe the imaging of time-dependent objects. This work builds on the existing k-space description of MRI and is useful for simplifying the analysis of explanations of motion artifacts, algorithms for the correction of motion, and efficient imaging schemes for dynamic objects. Specific examples of the use of this concept for different imaging techniques are presented.
Xiang
Q S
QS
Department of Medical Biophysics, Research University of Toronto, Ontario, Canada.
Henkelman
R M
RM
D016477:Artifacts; D017352:Echo-Planar Imaging / Q000379:methods; D004578:Electron Spin Resonance Spectroscopy; D005583:Fourier Analysis; D007089:Image Enhancement / Q000379:methods*; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D009038:Motion; D010507:Periodicity; D010827:Physiology; D013997:Time Factors