Patent ID: 7483515

Claim:
A detector ( 20 ) for the detection of X-radiation (X), in an exposure interval (T exp ), comprising: a) one or more sensors ( 10 ) with a conversion element ( 1 ) for the conversion of X-radiation (X) into an electrical signal (I(t)), and with an integration unit ( 2 , 4 ) for the integration of the electrical signal over a specified integration period (T int *); b) a readout circuit ( 11 , 12 ) for the readout and processing of the integrated electrical signal (Q dk *, Q sig *, Q ac *) from the sensor ( 10 ) during a readout interval (T rd ) which follows the exposure interval (T exp ); and c) a control means ( 30 ) coupled to the sensor ( 10 ) and set up to determine the specified integration period (T int *) so that the specified integration period (T int *) substantially overlaps the exposure interval (T exp ), wherein the control means ( 30 ) are set up so as to make the integration period (T int *) and the exposure interval (T exp ) substantially coincident, wherein the X-radiation (X) is continuous during the exposure interval (T exp ), and wherein the integration unit has a primary memory capacity ( 2 ) connected in parallel with the conversion element ( 1 ) and a secondary memory capacity ( 4 ) which is coupled to the primary memory capacity ( 2 ) and to the conversion element ( 1 ) via an externally controllable coupling element ( 5 ).