Speckle Reduction for Ultrasonic Imaging Using Frequency Compounding and Despeckling Filters along with Coded Excitation and Pulse Compression

<table>B-mode images for (a) REC reference, (b) REC-FC (full-width), (c) REC-FC (half-width), (d) REC-FC (third-width), (e) REC-FC (fourth-width), and (f) REC-FC (eighth-width). Image dynamic range is −50 dB.</table>

Advances in Acoustics and Vibration

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Figure 2: Speckle Reduction for Ultrasonic Imaging Using Frequency Compounding and Despeckling Filters along with Coded Excitation and Pulse Compression 

Figure 2 | Speckle Reduction for Ultrasonic Imaging Using Frequency Compounding and Despeckling Filters along with Coded Excitation and Pulse Compression 