Patent ID: 7388207

Claim:
A skew slit collimator for a gamma ray imaging device including a detector having a generally planar detector surface, the detector surface operable to be positioned adjacent a subject imaging region, the skew slit collimator comprising: a first collimator blade having a first slit, the first collimator blade being generally parallel to a detector surface and disposed in front of the detector surface, wherein the first collimator blade is operable to be positioned at a first focal length from an axis of rotation; and a second collimator blade having a second slit, a lengthwise orientation of the second slit being generally orthogonal to a lengthwise orientation of the first slit, the second collimator blade being generally parallel to the first collimator blade and disposed between the first collimator blade and the detector surface such that the second collimator blade is spaced apart from the first collimator blade and positioning the first collimator blade at the first focal length from the axis of rotation operates to position the second collimator blade at a second focal length from the axis of rotation, the second focal length being greater than the first focal length.