Systems and methods of detecting position and movement of the bladder and urethra are provided. In one embodiment, a system is provided including a flexible tube, or catheter, with one or more MEMS sensors and an RF antenna embedded thereon and an RF receiver located external to the flexible tube. The sensors in the flexible tube can be connected to external electronics, which are in turn connected to a computing device. The MEMS sensors provide motion detection and the RF sensors provide position/distance detection. The MEMS sensors can include, but are not limited to, one or more accelerometers, gyroscopes, stress sensors, tilt sensors, and/or pressure sensors. In operation, the flexible tube is inserted into the bladder through the urethra to detect the location of the bladder neck and track the motion and/or shape of the urethra. The results of the tracking can be provided on a display.
