Ultrasound Signal Processing for Automated Medical Monitoring

Ultrasound is a safe, non-invasive technique that can be used in various medical applications to improve patient quality of life. In this paper we discuss the current status of two ultrasound-based medical projects. The techniques we are developing can in the future be applied to medical monitoring in rural or space settings. Urinary incontinence affects a large percentage of the population. We are developing a wearable ultrasound device that can measure bladder fullness and alert the wearer or caretaker of the need to void. We have collected ultrasound data from a phantom bladder and are planning in the near future to collect data from human subjects. The data will be used to develop algorithms that can detect bladder fullness in real-time. Increased embolic load to the brain is a concern in high-altitude flight, deep water diving, and open heart surgery. Acoustic radiation force can be used to push emboli out of the blood flow path. We are currently developing simulations to accurately model acoustic radiation force on spherical emboli in a viscous fluid. These models will be used to help establish an experimental technique for efficient emboli removal.