Device (IMAGE) University of Washington Caption This is the portable device that tracks fluid volume changes. The electrodes, at right, are fastened to a patient's leg and transmit data to the device Credit Joan Sanders, U of Wash. Usage Restrictions Photo credit required. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.