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Wavelet-encoding gradient-echo imaging sequence using real-time de-noising method for acquisition time reduction
1National Research Council of Canada, Institute for Biodiagnostics, Winnipeg, Canada. Hacene.Serrai@cnrc-nrc.gc.ca
Object:
To reduce acquisition time and increase signal-to-noise ratio (SNR) of the wavelet-encoding gradient-echo (GE-WE) sequence used in small field of view dynamic magnetic resonance imaging.
Materials And Methods:
A GE-WE imaging sequence acquires wavelet lines from a 3-Tesla scanner. Those with intensity below a given threshold are skipped in real time, improving SNR and reducing acquisition time.
Results:
The SNR of GE-WE images increases by approximately three times in simulation, while the acquisition time reduction ranges from 5 to 10% on phantom tests.
Conclusion:
This technique improves the SNR of GE-WE images, while reducing acquisition time.
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