3D Simulation Model for Urine Detection in Human Bladder by UWB Technology

Develop a 3D simulation model for non-contact detection of urine volume in human bladder by Ultra-wideband (UWB) imaging technology. A 3D simulation model for urine detection was established, which consists of an elliptical cylindrical fat layer and a spherical urine layer, and the dielectric permittivity of tissues is considered. The UWB Vivaldi antenna is used in the simulation and sweeps the model in a linear form. By mimicking the action of a UWB radar system, the reflected signals at each aperture position are obtained from the boundary of fat and urine. To generate the imaging results, the synthetic aperture (SA)-based imaging algorithm is applied to the calibrated signal. The estimated radius of bladder agrees with theoretical data with a bias of 11.1%. It is shown that the possibility of detecting the volume of urine in the human bladder and UWB imaging technique has a huge application prospect in medical diagnosis.