The gas sheet ionization based diagnostic is a minimally invasive profile monitor for electron beams. In the ionization based monitor, the electron beam ionizes a neutral gas that is spatially tailored. The newly ionized particles form a footprint of the electron beam, and are imaged using an array of electrostatic lenses. The gas sheet diagnostic was conceptually tested using a 7 MeV electron beam and has shown strong correlations for use as a transverse profile. The concept is extendible, and proposed, for use with electron beams with energy greater than 10 GeV. Although different ionization mechanisms are dominant for each regime, the gas sheet diagnostic imaging scheme is viable when novel algorithms are employed to reconstruct the beam profile.