Placing Electrodes (IMAGE) University of Washington Caption Electrodes with a sticky backing are placed at various points on the leg. They track the fluid volume changes within the leg. Credit Mary Levin, 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.