Abstract: An expandable electrode set, methods of using the expanding electrode set, electrode set systems, and methods of manufacturing an electrode set are described herein. Various examples of an electrode set include nodes that are physically connected to each other by connectors that have a shape that allows for the deformation of the electrode set. The shape and material of the connectors is designed to provide a consistent deformation so that, when placing alignment markers on a part of a body to be monitored, the nodes end up in correct locations on the part of the body for the measurement being performed. The electrode set can include sensors, emitters, or sensors and emitters in various configurations.