Gravitational microlensing is one of a handful of tools with which to study stellar remnants, and the way to probe inactive stellar mass black holes. Unfortunately, it suffers from the considerable limitation of a near complete degeneracy between many of the lens and source parameters. Imaging microlensing events would provide a means to break this degeneracy directly, enabling the full reconstruction of the lens parameters. This can be accomplished in practice using the existing optical microlensing surveys to long-duration events involving radio bright stars (e.g. Mira variables) and triggering follow up VLBA. In practice, an optical/infrared microlensing survey of Galactic bulge and disk comparable to existing efforts is expected to result in black hole detection at a rate of 1.3 per year. Future radio microlensing surveys can push this rate to 10 detections per year, hence doubling the number of confirmed stellar holes in a couple years. I will describe how these rate estimates are obtained and what capabilities are required to achieve them