Patent ID: 7332722
Filing Date: 2008-02-19
Classification: A61B,G01T

Abstract:
1. In a method for obtaining high resolution dynamic images of conscious living subjects comprising the simultaneous acquisition of multiple images by a plurality of gantry mounted, high sensitivity and high spatial resolution dynamic pinhole or parallel-hole collimator imagers that may be subject to unwanted movement due to gantry flexing or axial motion that affects the spatial resolution of the multiple images, the improvement comprising: A) calibrating two or more of the imagers to the same coordinate system; and B) functionally correcting the acquired multiple images for unwanted detector movement due to gantry flexing and axial motion to obtain corrected spatial resolution of the acquired multiple images through the iterative application of the following equation: wherein v is one of two orthogonal coordinates defined in the plane of the detector, d is the distance from the axis of rotation to the pinhole and Δφ is the rocking angle through which the detector moves during rotation about a target.