Diagnostic X-ray apparatus.

摘要

A diagnostic x-ray apparatus emitting pulsed x-ray radiation and including a processor for performing digital x-ray subtraction imaging which includes digitisation of the video signals from an image intensifier-TV chain, digital subtraction and reconversion of the resultant digital difference video signals to analogue signals, wherein the subtraction is performed for two successive difference images with multiplying each image by the respective weighting factor in a predetermined image sequence. The resulting difference image is compared with a standard and reduced to at least the standard before display.