A recent case study was done at H3D to display our angular resolution while using Compton Imaging.
Measurements of two Cs-137 sources were taken at a set distance from the detector, and the two sources were moved farther apart to simulate larger angles between the sources and detectors. The sources were started at 5 degrees, and moved incrementally outwards by 5 degrees until reaching a 25 degree angular resolution. Cs-137 is imaged using Compton Imaging.
While the angle between the two sources and the detector is small (<25 degrees), the H series cannot distinguish the two sources from each other. Once the angle is increased to 25 degrees, the H series picks up each source separately and creates radiation images for each of them. If you have any questions about angular resolution with Compton Imaging let us know!