| 摘要 |
A device for locally resolved control of a radiation dose (rho<SUP>(gamma,e+)</SUP>({right arrow over (r)) applied with a pulsed particle beam ( 6 ) in particle beam therapy, with a processing unit ( 24 ), which is set up to detect continuously a count rate of x-ray quanta ( 14 ) measured with a positron emission tomograph ( 2 ) and to determine the applied radiation dose (rhorho<SUP>(gamma,e+)</SUP>({right arrow over (r)) from the pattern of the measured count rate, by determining by computation from the measured pattern of the count rate the time intervals (I<SUB>n</SUB>), in which an interaction of the particle beam ( 6 ) takes place at the application site and by rejecting these time intervals (I<SUB>n</SUB>) for the determination of the applied radiation dose (rho<SUP>(gamma,e+)</SUP>({right arrow over (r)).
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