H - Electricity – 05 – G
Patent
H - Electricity
05
G
358/11.1
H05G 1/00 (2006.01) A61B 6/03 (2006.01)
Patent
CA 1102015
ABSTRACT: In known devices for reconstructing the absorption distribution in a three-dimensional body, the body is not only imaged in a plane which is perpendicular with respect to the axis of rotation of the radiator/detector system, but also in a direction perpendicular thereto. The radiation is measured in both directions by a two-dimensional detector device. The reconstruction, however, is problematic and also involves measuring errors if the angle of aperture of the radiation beam in the latter direction (parallel with respect to the axis of rotation) is to large. These difficulties are eliminated in accordance with the invention in that the body to be examined is imaged from two groups of radiation source positions. Each group of radiation source positions is situated on an arc of a circle around the axis of rotation, and the part of the two arcs of a circle deter- mines the dimensions of the region in which the absorption distribution is reconstructed. The detector device (or the detector devices) is (are) arranged between the two arcs of a circle. -13-
305029
N.v. Philips Gloeilampenfabrieken
Van Steinburg C.e.
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