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:
Oct. 01, 1991
Filed:
Mar. 21, 1990
Applicant:
Inventor:
Yoshinori Manabe, Ootawara, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05G / ; A61B / ;
U.S. Cl.
CPC ...
378208 ; 378209 ; 378 20 ;
Abstract
The x-ray absorption factor of each end section of a top table is lower than that of a middle section thereof. If the end section of the top table protrudes from an effective field of scan so that fan beams are transmitted through the protruded portion, the beams can hardly be absorbed by the protruded portion. Accordingly, projection data obtained are hardly subject to any significant differences which depend on the transmission of the fan beams. Even though an image is reconstructed in accordance with the obtained projection data, therefore, it can be restrained from suffering shading. Thus, a high-quality image can be obtained.