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:
May. 01, 2007
Filed:
Jul. 13, 2005
Henri Souchay, Versailles, FR;
Rémy Klausz, Neuilly sur Seine, FR;
Matti Petri Jouhikainen, J{dot over (a)}rvenp{dot over (a)}{dot over (a)}, FI;
Henri Souchay, Versailles, FR;
Rémy Klausz, Neuilly sur Seine, FR;
Matti Petri Jouhikainen, J{dot over (a)}rvenp{dot over (a)}{dot over (a)}, FI;
General Electric Company, Schenectady, NY (US);
Abstract
In an apparatus for radiographic projection tomography, particularly mammography, an X-ray tube is mounted at the end of a swiveling arm, with a relative movement mechanism. The relative movement mechanism is such that it enables the tube to follow a path of a cycloid. Images or exposures taken only during the time when the tube, in its path, follows cusp points such that it is possible to keep a constant speed of movement of the arm while at the same time increasing the useful duration of an image. Vibration or oscillation effects inherent in the apparatus are compensated by the positioning, if necessary, of a counterweight.