DEVICE AND METHOD FOR RADIATION DOSIMETRY

摘要

The present invention relates to a dosimetry device (10) for determining a spatial distribution of a quantity of radiation incident on the dosimetry device. The device comprises a segmented electrode assembly (12) comprising an electrically nonconducting substrate (13) having a plurality of electrode elements (14) provided thereon. The device further comprises an electrically conducting sheet (16) comprising a perimetral protrusion (17) arranged in mechanical contact with the segmented electrode assembly (14) such as to define at least one ionization chamber cavity (18) between the segmented electrode assembly (14) and the electrically conducting sheet (16). The device also comprises a voltage applying means (28) for applying a voltage difference between the electrically conducting sheet (16) and the plurality of electrode elements (14) and a routing means (25) for routing a plurality of ionization currents corresponding to the plurality of electrode elements (14) to a processing means.