ASIC Design for a Single-Cable 64-Element Ultrasound Probe
Douwe Van Willigen (TU Delft - Electronic Instrumentation)
Jovana Janjic (Erasmus MC)
E. Kang (TU Delft - Electronic Instrumentation)
Zu Yao Chang (TU Delft - Electronic Instrumentation)
Emile Noothout (TU Delft - ImPhys/Verweij group)
Martin D. Verweij (TU Delft - ImPhys/Medical Imaging, TU Delft - ImPhys/Verweij group, Erasmus MC)
Nicolaas de Jong (Erasmus MC)
M. A P Pertijs (TU Delft - Electronic Instrumentation)
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Abstract
This paper presents an ASIC (Application Specific Integrated Circuit) design for a catheter probe that interfaces 64 piezoelectric elements directly integrated on top of the ASIC to an imaging system using a single micro-coaxial cable. Each of the piezo elements can be used for both transmit (TX) and receive (RX), enabling full synthetic aperture imaging. A prototype has been realized with a 1.5 mm diameter circular layout, intended for 3D intra-vascular ultrasound imaging. The functionality of this ASIC has been successfully demonstrated in a 3D imaging experiment. The design allows a single-element transducer to be replaced by a transdcuer array while using the same cable, making it a promising solution for 3D imaging with size constrained probes.