The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 26, 1996
Filed:
Sep. 27, 1994
Thomas Flohr, Uehlfeld, DE;
Heinrich Wallschlaeger, Erlangen, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
In a computed tomography apparatus wherein an examination subject is irradiated by an x-ray beam from a number of different angular positions, a measured data set is obtained in a first geometry, and the reconstruction of the tomographic image ensues by interpolation of the measured data in a second geometry. The interpolation results in an unwanted smoothing of the data. In order to compensate for this smoothing, the data in the frequency space are divided by the average Fourier transform of the interpolation function, or alternatively, a discrete convolution of the data in the spatial domain is undertaken.
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