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:
Jan. 09, 2018
Filed:
Jan. 12, 2015
Toshiba Medical Systems Corporation, Otawara-Shi, JP;
Xiaolan Wang, Buffalo Grove, IL (US);
Yuexing Zhang, Naperville, IL (US);
Satoru Nakanishi, Arlington Heights, IL (US);
Toshiba Medical Systems Corporation, Otawara-shi, JP;
Abstract
A computed tomography (CT) imaging apparatus for performing a scanogram includes a radiation source to emit X-rays; a plurality of photon-counting detectors (PCDs) arranged in a circular ring between the radiation source and a CT detector; and processing circuitry to perform a first scan to obtain projection data; determine a plurality of dark channels by comparing the obtained projection data to a predetermined threshold; add at least one adjacent padding channel to the determined plurality of dark channels to determine a plurality of shadowed channels; generate a correction map from the determined plurality of shadowed channels; and correct a scanogram obtained by a second scan based on the generated correction map. The apparatus reduces the shadow effects in the scanogram scan.