Abstract:
A rotating anode x-ray tube employing a generally cylindrical anode which is axially moveable relative to the cathode so that the focal spot traverses a spiral path as the anode rotates and moves axially. The axial displacement of the anode can be controlled by the temperature of the focal spot, i.e. by measuring the light emitted from the focal spot area.
Abstract:
Apparatus for supporting and selectively moving an x-ray tube and image intensifier assembly in longitudinal, lateral, vertical and rotary directions, and for establishing a plane in a selected position and orientation, within which a scanning motion of the x-ray assembly can be limited; the assembly is counter-balanced as regards vertical movement, to require only a nominal force for manual operation, and electromagnetic locks are provided to selectively restrict movement of the assembly in any and all directions.