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:
Jan. 17, 1995
Filed:
Apr. 03, 1992
Ichiro Yamagishi, Tokyo, JP;
Kabushiki Kaisha Toshiba, Kanegawa, JP;
Abstract
In a helical scanning type X-ray CT imaging system, a plurality of X-ray CT images of a biological body are reconstructed in synchronism with cardiac beats of a heart thereof to obtain such X-ray CT images free from image distortions. The helical scanning type X-ray CT imaging system comprises: an X-ray projection image data acquiring unit for acquiring continuous X-ray projection image data about a biological body under medical examination, while scanning both an X-ray source and an X-ray detector around the biological body in a helical scanning movement mode; an electrocardiogram data acquiring unit for acquiring a plurality of cardiac beats of a heart of the biological body as electrocardiogram data; a converting unit for converting temporal information contained in the electrocardiogram data into positional information of the biological body in connection with the helical scanning movement; and a reconstructing unit for reconstructing a plurality of X-ray CT images by processing the continuous X-ray projection image data based upon the positional information of the biological body, thereby producing the plural X-ray CT images having a specific relationship with phases of the cardiac beats of the heart.