Accurately estimating event locations is of significant importance in microseismic investigations because this information greatly contributes to the overall success of hydraulic fracturing monitoring programs. Full-wavefield, time-reverse imaging (TRI) offers an effective methodology for locating surface-recorded microseismic events. To be most beneficial in microseismic monitoring programs, though, the TRI procedure requires using accurate subsurface models that account for anisotropic elastic media effects. We developed a novel microseismic extended PS energy imaging condition that exhibits improved sensitivity to anisotropic elastic model errors compared to its existing counterparts. The sensitivity information in extended PS energy images can be successfully used as a quality control tool to update subsurface models. Therefore, we also developed a microseismic, image-domain elastic wavefield inversion methodology to obtain accurate elastic models, which can significantly improve the focusing of imaged events, leading to enhanced fluid-injection programs.