Vorrichtung sowie ein Verfahren zur Bestimmung und Steuerung der relativen Position und des Durchmessers des Brennfleckes einer Roentgenroehre

DE 4325351 A UPAB: 19981021 The X=ray tube test system uses at least one object image projected onto a detector via at least one X-ray bean, with digitalisation of the intensity distribution of the projection and calculation of the relative position and dia. of the focal spot, using a least square fit method. The intensity distribution may be corrected by a shading function. Pref. the test object is a round rod or wire, which extends perpendicular to the main plane defined by the focal spot and the line along which the projection values are digitalised. USE - High resolution computer tomography system with micro-focus X-ray tube