Patent ID: 7473902
Filing Date: 2009-01-06
Classification: G01N,G01T

Abstract:
1. A method for taking radiographs in a digital radiographic unit, wherein with the aid of pixel readout units adjacent in a matrix, charge pulses generated by x-ray quanta are measured and counted by using a counting flat image detector, that the method comprising: measuring a coincidence, occurring within a specifiable time interval, of a charge pulse of a matrix readout unit and a charge pulse of at least one bordering matrix readout unit; adding the corresponding charge pulses to form a total charge pulse; and providing coincidence measurement and total charge pulse as basic variables for a further evaluation; reading out, for a given coincidence, a number of x-ray quantum as image information for a radiograph, the number of x-ray quantum being zero, one x-ray quantum or two x-ray quantum depending on a height of the total charge pulse relative to a lower and upper threshold value; and generating radiographs based on the image information and taking into account results of the further evaluation; wherein