Common menu bar links
Related Information
Institutes & Programs
- NRC Biotechnology Research Institute
- NRC Canada Institute for Scientific and Technical Information
- NRC Canadian Hydraulics Centre
- NRC Canadian Neutron Beam Centre
- NRC Canadian Photonics Fabrication Centre
- NRC Centre for Surface Transportation Technology
- NRC Genomics and Health Initiative
- NRC Herzberg Institute of Astrophysics
- NRC Imaging Network Portal
- NRC Industrial Materials Institute
- NRC Industrial Research Assistance Program
- NRC Institute for Aerospace Research
- NRC Institute for Biodiagnostics
- NRC Institute for Biological Sciences
- NRC Institute for Chemical Process and Environmental Technology
- NRC Institute for Fuel Cell Innovation
- NRC Institute for Information Technology
- NRC Institute for Marine Biosciences
- NRC Institute for Microstructural Sciences
- NRC Institute for National Measurement Standards
- NRC Institute for Nutrisciences and Health
- NRC Institute for Ocean Technology
- NRC Institute for Research in Construction
- NRC Plant Biotechnology Institute
- NRC Steacie Institute for Molecular Sciences
- National Bioproducts Program
- National Institute for Nanotechnology
- National Research Council Canada
Key Sectors
Areas of Research
Communities
Careers
News
Events
Project Leader
Jonathan Sharp
Phone: 403-221-3129
Fax: 403-221-3230
Email: Jonathan.Sharp@nrc-cnrc.gc.ca
PEST 3D Imaging
Introducing slice gaps into 3DFT sequences for reduced acquisition time
NRC-IBD researchers, using a high-field 11.7 Tesla MRI system, have developed a three-dimensional imaging method that will reduce MR image acquisition time by 50 - 75 percent. The new method, called PEST-3DFT, is a faster 3D method that combines the benefits of the well-known 3D-phase encoding and multi-slice methods.
3DFT encoding is limited by the fact that the acquisitions can be too slow; 2D methods are limited because the number of slices available is sometimes insufficient for the requirement.
To address this problem, a new spatial-encoding method, based on the periodic spatial pre-saturation of the volume of interest with 3DFT MRI, was developed. See Figure 1.
Figure 1
Schematic Pulse Sequence for 'PEST-3DFT'.
The PEST-3DFT sequence was implemented on a 500 MHz microscopy Bruker imaging system equipped with Magnex magnet and gradients.
Figure 2 shows two sets of results for a gradient-echo 3DFT sequence. The images in the left hand column are from small capillaries phantoms (1mm diameter). The images in the right hand column are from an ex vivo mouse head. In both cases the PEST 3DFT slices show a very similar appearance to the conventional 3DFT, while the wider slice shows significant blurring of details. The new technique will allow experiments to be conducted more quickly, with a large number of slices.
Figure 2
Images from small capillaries phantom and an ex-vivo mouse head using a 'PEST-3DFT', 3DFT with 64 and 128 phase encoding steps. All sequences were used as a gradient echo version.
Related Information
Read more about PEST 3D Imaging:
- Distributed Computer Clustering
- Magnetic Resonance Technology Research Areas
- MR Microscopy
- MR Technology Development
- Single Point Imaging (SPI)
