Abstract: Compensation of pressure driven leakage while using high precision volumetric pumps may be provided. A measurement apparatus comprising a pump may be calibrated. Calibrating the measurement apparatus may comprise creating a characterization of leakage through the pump as a function of a pressure difference over the pump. The measurement apparatus may be operated for a predetermined time period to pump a liquid. A measurement of a flow through the measurement apparatus may be determined based on the amount of rotation of the piston. The measurement of the flow may be compensated for leakage of the pump while the measurement apparatus operated for the predetermined time period based on the characterization of leakage and the amount of piston rotation during the period and the monitored pressure difference over the pump.

Abstract: The present invention relates to a method and radiation monitoring device (10) comprising at least one radiation detector (111), a memory (112) and a controller (12), wherein said radiation detector is arranged to detect at least one type of radiation dose. The memory (112) comprises a number of memory positions configured to store data resulting from said detector (111) detection. The positions are configured to store accumulated measured dose values corresponding to consecutive real time intervals. The controller is configured to continuously compute mean radiation dose values for measured and stored radiation doses during the predetermined time period and for each computation, a resulting mean value is compared with a corresponding predetermined reference value and generate a signal corresponding to result of said comparison.

Abstract: The present invention relates to an X-ray parameter measuring arrangement comprising a detector for measuring said parameter configured to be positioned in a position adjacent to an x-ray source arranged to generate a ray formation having a primary ray portion for radiating an object. The position is chosen in such a way that the interference with a reproduced image is reduced or eliminated.

Abstract: The present invention relates to a method and radiation monitoring device (10) comprising at least one radiation detector (111), a memory (112) and a controller (12), wherein said radiation detector is arranged to detect at least one type of radiation dose. The memory (112) comprises a number of memory positions configured to store data resulting from said detector (111) detection. The positions are configured to store accumulated measured dose values corresponding to consecutive real time intervals. The controller is configured to continuously compute mean radiation dose values for measured and stored radiation doses during the predetermined time period and for each computation, a resulting mean value is compared with a corresponding predetermined reference value and generate a signal corresponding to result of said comparison.