Patent ID: 6067343
Filing Date: 2000-05-23
Classification: A61B,H04N,H05G

Abstract:
An X-ray device constructed for pulsed fluoroscopy, including:an X-ray source for emitting an X-ray beam,an X-ray image converter for detecting X-rays and for forming an X-ray image,a primary diaphragm device which, in order to limit the X-ray beam, is arranged between the X-ray source and an object to be examined, anda control circuit for automatic exposure control by the switching off of the X-ray source when a pre-determined X-ray dose has been reached, the control circuit including a detector with at least one measuring field for measuring the X-ray dose rate, andmeans for determining a correction value which is dependent on the dimensions of the exposed area f the measuring field, the correction value for influencing the control circuit in such a manner that the X-ray dose remains substantially the same even when parts of the measuring field are not exposed.