A DISTRIBUTED, FIELD EMISSION-BASED X-RAY SOURCE FOR PHASE CONTRAST IMAGING
摘要
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.
申请公布号
WO2013184213(A2)
申请公布日期
2013.12.12
申请号
WO2013US31553
申请日期
2013.03.14
申请人
THE GENERAL HOSPITAL CORPORATION;GUPTA, RAJIV;VALASQUEZ-GARCIA, LUIS, F.;LANZA, RICHARD;HORN, BERTHOLD, KP;AKINWANDE, TAYO