1. A Radiation Imaging System for detecting sources of electromagnetic radiation events, without collimators, comprising: solid scintillation detectors and track detectors for determining the coordinates of tracks of electrons created by the interaction of the electromagnetic radiation with said solid detectors and, means for processing the coordinates of such tracks and determining 1.1—the beginning of each track 1.2—the direction of each track 1.3—the length of each track, and 1.4—the rate of energy deposition along each track, and means for correlating separate electron tracks created by the same event and means for determining the energy and direction of the electromagnetic radiation causing the event, and means for determining the distribution in space of the electromagnetic radiation sources,