Pseudo-Random Channel Shuffling Time-Division Multiplexing of Ultrasound Echoes in Ultrasound Imaging Integrated Circuits

Next generation wearable/implantable ultrasound imaging systems demand ultra-compact, power-efficient analog front-end circuits enabling high-resolution, high frame-rate multimodal imaging. Individual RF channel access allows for the use of state-of-the-art imaging methods such as synthetic aperture...

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Veröffentlicht in:IEEE International Ultrasonics Symposium (Online) S. 1 - 5
Hauptverfasser: Dias, Diogo, Goes, Joao, Desmarais, Samuel, Costa, Tiago M. L.
Format: Tagungsbericht
Sprache:Englisch
Veröffentlicht: IEEE 15.09.2025
Schlagworte:
Analog Front-End
ASICs
Compressive Sensing
Image coding
Imaging
Integrated circuits
Next generation networking
Power dissipation
Radio frequency
Silicon
Time division multiplexing
Transducers
Ultrasonic imaging
Ultrasound Imaging
Ultrasound Stimulation
ISSN:1948-5727
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Zusammenfassung:Next generation wearable/implantable ultrasound imaging systems demand ultra-compact, power-efficient analog front-end circuits enabling high-resolution, high frame-rate multimodal imaging. Individual RF channel access allows for the use of state-of-the-art imaging methods such as synthetic aperture imaging, plane-wave compounding and adaptive beamforming, while remaining crucial for auto-calibration of sparse transducer arrays. Time-division multiplexing-based (TDM) architectures have been widely deployed to enable individual RF channel access, but impose severe trade-offs between power and silicon area for imaging quality and contrast. This work introduces a pseudo-random channel-shuffling TDM (PRCS-TDM) technique, emulating a non-uniform sampling-rate for each RF channel. Results show PRCS-TDM improves B-mode contrast-to-noise ratio (CNR) in anechoic regions up to a 2× increase compared to conventional TDM, achieving a 3.2 dB CNR increase for channel compression ratios greater than 8.
ISSN:1948-5727
DOI:10.1109/IUS62464.2025.11201729