Patent ID: 6819736
Filing Date: 2004-11-16
Classification: A61B,G06T,Y10S

Abstract:
A method for performing computed tomography, the method comprising:a) for scanning an object by a cone-shaped beam exiting from a focal point and by a matrix-like detector array for detecting the beam, the focal point is moved in relation to the object on a spiral path about a system axis, and the detector array provides output data corresponding to the received radiation; and b) for imaging an object region that executes a periodic motion, a signal that reproduces the course over time of the periodic motion is obtained during the scanning; c) from output data furnished during the motion of the focal point on a spiral segment, images with an inclined image plane are reconstructed, the image planes being inclined relative to the system axis both by an angle of inclination &ggr; about a first axis which perpendicularly intersects the system axis, and by a tilt angle &dgr; about a second axis which perpendicularly intersects both the first axis and the system axis; and spiral segments that succeed one another overlap one another by an overlap angle that is greater than or equal to zero; and the spiral segments are selected, taking into account the signal that reproduces the course over time of the periodic motion, such that they correspond to a phase of the periodic motion that is to be imaged.