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.

Date of Patent:
Aug. 16, 2022

Filed:

Jun. 01, 2020
Applicant:

Hitachi, Ltd., Tokyo, JP;

Inventors:

Keisuke Yamakawa, Tokyo, JP;

Keiko Takahashi, Tokyo, JP;

Tadashi Nakamura, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 23/00 (2006.01); G06T 11/00 (2006.01); G06K 9/62 (2022.01); G01N 23/044 (2018.01);
U.S. Cl.
CPC ...
G06T 11/008 (2013.01); G01N 23/044 (2018.02); G06K 9/6215 (2013.01); G06T 11/006 (2013.01); G01N 2223/401 (2013.01);
Abstract

An X-ray tomosynthesis apparatus accurately extracts a region of a small high absorber in a subject on 2D measurement projection data. When pieces of the 2D measurement projection data for each of a plurality of projection angles are arranged in a projection angle direction, the 2D measurement projection data is shifted in a 2D plane so that part or all of a range of a high absorber region included in the 2D measurement projection data overlaps at least a range of the high absorber region included in 2D measurement projection data at an adjacent projection angle in an in-plane direction of the 2D plane. The 2D measurement projection data for each of the plurality of projection angles after shifting is arranged in the projection angle direction to obtain 3D measurement projection data, and a 3D region is obtained from a first start point by a region expansion process.


Find Patent Forward Citations

Yamakawa, Keisuke. (2022). X-ray tomosynthesis apparatus, image processing apparatus, and program (U.S. Patent No. 11417035). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11417035

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