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Scott King
Phone: 204-984-2409
Fax: 204-984-7036
Email: Scott.King@nrc-cnrc.gc.ca
Multi Transmitter Arrays
NRC-IBD researchers are developing an optimally designed and constructed transmit phased array system, driven by a Cartesian negative feedback multi-channel transmitter system. This new type of MRI technology will feature all of the image collection qualities of standard 1.5 Tesla MRI systems commonly found in hospitals, but with the signal-to-noise (SNR) advantages of a very high field MRI scanner.
This new technology will solve many of the problems associated with very high field MR imaging such as non-uniform excitation and high RF power deposition (SAR). With such a multi-element body phased array, researchers will be able to actively select a smaller set of array elements, making up a long phased array body coil to which power will be delivered only to excite the region of the heart during cardiac studies. This capability will eliminate high SAR related to standard body coil RF power delivery to tissue outside the required field of view (FOV).
Cardiac MRI can then be used to perform studies without the sacrifices typically made due to high SAR, such as RF pulse length, acquisition speed, and limited number of slices. These advances will return image quality control to the MR system operator and allow full advantage of the high SNR associated with high field MRI systems, thus making high field MRI/MRS clinically viable.
Researchers believe that a multi-Tx array system is clearly the best option for high field MRI systems and are working to develop the proper method for uniform spin excitation and controlled SAR.
Related Information
Read more about Multi Transmitter Arrays:
- FAST MRI
- Gradient Coils
- Gradient Free MRI
- MR Research
- MR Technology Development
- MRI Console Development
- MRI Imaging Methods
- MRI Systems
- Musaik RF Array Designer Software
- RF Coils
