Abstract
Split-blade diffusion-weighted periodically rotated overlapping parallel lines with enhanced reconstruction (DW-PROPELLER) was proposed to address the issues associated with diffusion-weighted echo planar imaging such as geometric distortion and difficulty in high-resolution imaging. The major drawbacks with DW-PROPELLER are its high SAR (especially at 3T) and violation of the Carr-Purcell-Meiboom-Gill condition, which leads to a long scan time and narrow blade. Parallel imaging can reduce scan time and increase blade width; however, it is very challenging to apply standard k-space-based techniques such as GeneRalized Autocalibrating Partially Parallel Acquisitions (GRAPPA) to split-blade DW-PROPELLER due to its narrow blade. In this work, a new calibration scheme is proposed for k-space-based parallel imaging method without the need of additional calibration data, which results in a wider, more stable blade. The in vivo results show that this technique is very promising.
Original language | English (US) |
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Pages (from-to) | 638-644 |
Number of pages | 7 |
Journal | Magnetic Resonance in Medicine |
Volume | 65 |
Issue number | 3 |
DOIs | |
State | Published - Mar 2011 |
Keywords
- PROPELLER
- diffusion
- mutual calibration
- parallel imaging
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging