Patent ID: 8064568
Filing Date: 2011-11-22
Classification: A61B

Abstract:
1. A radioscopic method to generate projections of the interior of an examination subject, comprising the steps of: placing an examination subject in an examination space of an imaging apparatus comprising at least one source of penetrating radiation that emits a ray beam of penetrating radiation having a fan angle; rotating said at least one penetrating radiation source, and thus also rotating the ray beam emitted therefrom, in a rotation plane containing said fan angle, in a rotation direction around the examination subject in the examination space; during a portion of rotation of said at least one penetrating radiation and said ray beam, varying the fan angle of said ray beam through a predetermined rotation angle that proceeds in succession through an initial rotation angle range and an end rotation angle range, and increasing a value of the fan angle from a start value to an end value in said initial rotation angle range, and reducing the value of the fan angle from said end value to said start value in said end rotation angle range; and detecting the penetrating radiation of the ray beam, attenuated by the examination subject and generating a projection data set from the detected attenuated penetrating radiation for each of a plurality of respective angular positions of the at least one x-ray source around the examination subject, and making said projection data sets available as an output from said detector in a form allowing reconstruction of an image of the examination subject therefrom.