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:
Mar. 14, 2017
Filed:
Mar. 13, 2014
Hitachi, Ltd., Tokyo, JP;
Yuta Ogura, Tokyo, JP;
Ryota Kohara, Tokyo, JP;
HITACHI, LTD., Tokyo, JP;
Abstract
In order to provide an X-ray CT apparatus or the like capable of improving the image quality even with low-exposure scanning by reducing artifacts generated around high absorbers on an image while reducing the amount of image noise, a reconstruction arithmetic devicesets the number of iterations of iterative processing for correcting projection data, and calculates, as calibration coefficients, a correction coefficient β and an adjustment coefficient α for adjusting the application ratio of noise reduction processing fand signal strength maintenance processing fincluded in the iterative processing. By performing the iterative processing including the noise reduction processing fand signal strength maintenance processing fon the projection data based on the number of iterations and the calibration coefficients α and β, corrected projection data is created, and a CT image is reconstructed.