Monitoring cardiac output continuously post-surgery for children with congenital heart disease is an important part of post-operative recovery, especially given the potential for large changes in vascular pressure as a side-effect of pharmaceutical agents given to help recovery. Current methods to monitor cardiac output are limited by the requirement for invasiveness (cuff-type flow probes), or do not provide continuous monitoring (ultrasound Doppler). Using a combination of analytical and finite element modeling, we explore the design and optimization of a unique ultrasonic transit-time flow probe that extends the capability of current devices by providing greater miniaturization, better sensitivity, and lower cost through the use of capacitive micromachined ultrasound transducer (cMUT) technology.
An Implantable Transit-Time Aortic Flow Probe Using Capacitive Micromachined Ultrasound Transducers: Design and Optimization
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Liu, J, & Shandas, R. "An Implantable Transit-Time Aortic Flow Probe Using Capacitive Micromachined Ultrasound Transducers: Design and Optimization." Proceedings of the ASME 2007 Summer Bioengineering Conference. ASME 2007 Summer Bioengineering Conference. Keystone, Colorado, USA. June 20–24, 2007. pp. 745-746. ASME. https://doi.org/10.1115/SBC2007-176579
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