Abstract
Reduction of the slice-select refocusing gradient in two-dimensional multislice imaging results in asymmetry of the k-space representation of Collected data along the slice-select direction. Standard methods of partial Fourier reconstruction developed for other methods of asymmetric k-space sampling can be used to reconstruct these data with final through-plane resolution smaller than the collected slice thickness. This method can be used for reducing scan time in the same manner as asymmetric sampling in the phase-encoded direction. In addition, the reduced refocusing gradient reduces minimum TE and motion artifacts in the same manner as for asymmetric sampling in the frequency-encoded direction (fractional echoes). Results using a resolution phantom and a flow phantom illustrate these concepts.
Original language | English (US) |
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Pages (from-to) | 625-634 |
Number of pages | 10 |
Journal | Magnetic Resonance in Medicine |
Volume | 39 |
Issue number | 4 |
DOIs | |
State | Published - Apr 1998 |
Keywords
- Asymmetric sampling
- K-space
- Pulse sequence
- RF pulses
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging