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:
Sep. 04, 2018
Filed:
Mar. 14, 2013
The General Hospital Corporation, Boston, MA (US);
Massachusetts Institute of Technology, Cambridge, MA (US);
Rajiv Gupta, Wayland, MA (US);
Luis Fernando Velasquez-Garcia, Cambridge, MA (US);
Richard Lanza, Cambridge, MA (US);
Berthold K P Horn, Boston, MA (US);
Akintunde Ibitayo Akinwande, Cambridge, MA (US);
The General Hospital Corporation, Boston, MA (US);
Massachusetts Institute of Technology, Cambridge, MA (US);
Abstract
An x-ray source for use in Phase Contrast Imaging is disclosed. In particular, the x-ray source includes a cathode array of individually controlled field-emission electron guns. The field emission guns include very small diameter tips capable of producing a narrow beam of electrons. Beams emitted from the cathode array are accelerated through an acceleration cavity and are directed to a transmission type anode, impinging on the anode to create a small spot size, typically less than five micrometers. The individually controllable electron guns can be selectively activated in patterns, which can be advantageously used in Phase Contrast Imaging.