Patent ID: 8067741
Filing Date: 2011-11-29
Classification: G01T

Abstract:
1. A focused pinhole gamma detection device, comprising: at least one detector, having a detector surface and being sensitive to gamma-photons; a collimator; and an object carrier, arranged to position an object to be examined in an object space, wherein the collimator is provided between the at least one detector and the object space, wherein the collimator has a plurality of pinhole systems, each of said pinhole systems having a plurality of pinholes having mutually non-parallel central lines, having a distance d between any two of said plurality of pinholes that is smaller than a distance d wherein all of said pinhole systems are constructed and arranged so as to establish a common overlap of their pinhole system fields of view, said overlap defining a focus volume, that is seen by all pinhole systems of the device, wherein a portion of the focus volume is outside the field of view of at least one of the pinholes of at least one of said pinhole systems, and wherein a point of closest approximation of at least one set of central lines of two pinholes in at least one of said pinhole systems is outside a centre of gravity of the focus volume.