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. 02, 1999
Filed:
May. 18, 1998
Rika Baba, Kokubunji, JP;
Ken Ueda, Kashiwa, JP;
Ken Ishikawa, Matsudo, JP;
Hironori Ueki, Kokubunji, JP;
Keiji Umetake, Inagi, JP;
Hitachi Medical Corporation, Tokyo, JP;
Abstract
A radiographic apparatus which can improve at high speed the picture quality of an X-ray fluoroscopic image or an X-ray radiographic image is disclosed. In a radiographic apparatus acquiring an X-ray fluoroscopic image or an X-ray radiographic image and having a scattered X-ray corrector for eliminating a scattered X-ray component from the acquired X-ray fluoroscopic image or X-ray radiographic image, the scattered X-ray corrector comprises: scattered X-ray intensity distribution function generator for generating a scattered X-ray intensity distribution function on the basis of the acquired X-ray fluoroscopic image or X-ray radiographic image; a moving average calculator for executing moving average calculation a plurality of times in each of the vertical and lateral directions of the acquired X-ray fluoroscopic image or X-ray radiographic image; a window width calculator for calculating a window width of the moving average calculation on the basis of the scattered X-ray intensity distribution function; and a difference calculator means for calculating the difference between the acquired X-ray fluoroscopic image or X-ray radiographic image and an image to which the moving average calculation is performed.