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:
Aug. 09, 2016
Filed:
May. 10, 2011
Tsutomu Yamakawa, Osaka, JP;
Koichi Ogawa, Tokyo, JP;
Akitoshi Katsumata, Ichinomiya, JP;
Masahiro Tsujita, Osaka, JP;
Hideyuki Nagaoka, Osaka, JP;
Tsutomu Yamakawa, Osaka, JP;
Koichi Ogawa, Tokyo, JP;
Akitoshi Katsumata, Ichinomiya, JP;
Masahiro Tsujita, Osaka, JP;
Hideyuki Nagaoka, Osaka, JP;
TAKARA TELESYSTEMS CORP., Osaka-Shi, Osaka, JP;
Abstract
In the imaging space provided by a panoramic imaging apparatus, a phantom is arranged. The phantom is located to a predetermined tomographic plane and includes markers which image known positional information with an X-ray beam. The X-ray beam from an X-ray source is acquired as X-ray transmission data by a detector, and a panoramic image is produced using the data. Based on known positional information of the markers and information of marker positions in the panoramic image, distance information (Rs, Rd) between the X-ray tube and the detector and height information (B) of the X-ray tube to the detector are calculated. From this calculated results and the acquired data, parameters (Δx/ΔFi, θ, Δθ/ΔFi, D, A, CX, CY) defining positional relationships among the X-ray tube, the detector, and the tomographic plane are calculated such that amounts of changes in the position connecting the X-ray tube and the detector are considered in the parameters. This allows the parameters to be calibrated for 3D image reconstruction.