CMUT/CMOS-based Butterfly iQ - A Portable Personal Sonoscope
Joyce Y Liu, BAa, Jiajun Xu, MDb, Flemming Forsberg, PhDc, Ji-Bin Liu. MD, FAIUMc()

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Figure 1. CMOS-based 2D array transducer with 9000 micromachined sensors can program multiple type of probe, e.g., linear, curved or phased. (Picture was adapted from https://www.butterflynetwork.com/iq)