Patent ID: 8130910

Claim:
An x-ray tube configured to be at least partially submerged in a liquid coolant, the x-ray tube comprising: a cathode at least partially positioned within a cathode housing; an anode at least partially positioned within a can, the can being formed from a first material; an x-ray window; and an aperture body formed from a second material, the aperture body coupling the cathode housing to the can, the aperture body defining an aperture through which electrons may pass between the cathode and the anode, the aperture body further defining at least two exterior surfaces that are each configured to be exposed to the liquid coolant in which the x-ray tube is at least partially submerged, the aperture body further defining a window frame to which the x-ray window is attached and through which x-rays produced at the anode may exit the aperture body, wherein at least fifty percent of the volume of the aperture body, excluding the volume of the aperture, is solid.