公开(公告)号：US10791615B2

公开(公告)日：2020-09-29

申请号：US16086440

申请日：2017-03-21

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Lester Donald Miller ,  Nirmal Soni ,  Rolf Karl Otto Behling ,  Roland Proksa ,  Dionys Van De Ven

IPC: H05G1/32 ,  H05G1/58 ,  H01J35/06 ,  H01J35/10 ,  H01J35/04 ,  G01V5/00 ,  H05G1/10

Abstract: The present invention relates to an apparatus for generating X-rays. It is described to produce (210) with a power supply (40) at least two voltages between at least one cathode (20) and an anode (30), wherein the at least two voltages comprises a first voltage and a second voltage. The at least one cathode is positioned relative to the anode. Electrons are emitted (220) from the at least one cathode. Electrons emitted from the at least one cathode are interacted (230) with the anode with energies corresponding to the at least two voltages. X-rays are generated (230) from the anode, wherein the electrons interact with the anode to generate the X-rays. First X-rays are generated when the power supply produces the first voltage and second X-rays are generated when the power supply produces the second voltage. The power supply is controlled (250), such that a ratio between the first X-rays and the second X-rays is controllable.

公开(公告)号：US10757795B2

公开(公告)日：2020-08-25

申请号：US15765511

申请日：2016-10-04

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Lester Donald Miller ,  Carolina Ribbing ,  Dionys Van De Ven

IPC: H05G1/26 ,  A61B6/00 ,  H05G1/54 ,  A61B6/03 ,  G01T1/36

Abstract: The invention relates to a device (10) for determining spatially dependent x-ray flux degradation and photon spectral change, a system (1) for determining spatially dependent x-ray flux degradation and photon spectral change for an x-ray tube (20), a method for spatially dependent x-ray flux degradation and photon spectral change for an x-ray tube (20), a computer program element for controlling such device (10) or system (1) for performing such method and a computer readable medium having stored such computer program element. The device (10) for determining spatially dependent x-ray flux degradation and photon spectral change comprises an acquisition unit (11), a processing unit (12), a calculation unit (13), and a combination unit (14). The acquisition unit (11) is configured to acquire x-ray flux degradation data for the x-ray tube (20). The processing unit (12) is configured to process the x-ray flux degradation data into spatially dependent flux degradation data. The calculation unit (13) is configured to calculate at least a photon spectral change of the x-ray tube (20) and to convert the photon spectral change into a spatially dependent spectrum. The combination unit (14) is configured to combine the spatially dependent flux degradation data and the spatially dependent spectrum.