Hacene Serrai1, Richard Young. 1. National Research Council of Canada, Institute for Biodiagnostics, Winnipeg, Canada. Hacene.Serrai@cnrc-nrc.gc.ca
Abstract
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.
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.