title: An FPGA-based ultrasound imaging system using capacitive micromachined ultrasonic transducers.
abstract: We report the design and experimental results of a field-programmable gate array (FPGA)-based real-time ultrasound imaging system that uses a 16-element phased-array capacitive micromachined ultrasonic transducer fabricated using a fusion bonding process. The imaging system consists of the transducer, discrete analog components situated on a custom-made circuit board, the FPGA, and a monitor. The FPGA program consists of five functional blocks: a main counter, transmit and receive beamformer, receive signal pre-processing, envelope detection, and display. No dedicated digital signal processor or personal computer is required for the imaging system. An experiment is carried out to obtain the sector B-scan of a 4-wire target. The ultrasound imaging system demonstrates the possibility of an integrated system-in-a-package solution.
authors: Advanced Micro-/Nano-Devices Laboratory and the Waterloo Institute for Nanotechnology at the University of Waterloo, Waterloo, ON, Canada.
authors: Lawrence L P
authors: LL
authors: Wong
authors: Albert I
authors: AI
authors: Chen
authors: Andrew S
authors: AS
authors: Logan
authors: John T W
authors: JT
authors: Yeow
mesh_terms: D017076:Computer-Aided Design; D025802:Electric Capacitance; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007089:Image Enhancement / Q000295:instrumentation*; D007090:Image Interpretation, Computer-Assisted / Q000295:instrumentation*; D016247:Information Storage and Retrieval / Q000379:methods*; D008904:Miniaturization; D019047:Phantoms, Imaging; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D014159:Transducers; D014463:Ultrasonography / Q000295:instrumentation*