Patent ID: 7928399

Claim:
A method for imaging and/or locating a radiation source, said method comprising the steps of recognizing an interaction between a radiation emission and a sensor; converting a parameter of said radiation emission into digital form; calculating a Compton cone from a parameter of said radiation emission; tracing at least one individual Compton cone on to a unit sphere having preselected characteristics by plotting a plurality of points on the sphere, each point evaluated by the equation { c·s ≦cos θ cos δ+sin θ sin δ OR cos θ≧cos δ} AND { c·s ≧cos θ cos δ−sin θ sin δ OR cos θ≦−cos δ} wherein c is the Compton cone axis direction vector, s is the vector from the center of the sphere to said point on the sphere, θis the Compton scatter angle, and δis the estimated angular uncertainty; computing a result indicative of a preselected characteristic of said radiation source; and outputting said result.