Patent ID: 8399858

Claim:
A device comprising: a cylindrically shaped dosimeter mount, a piece of optically stimulated luminescence material (OSLM) mounted in the dosimeter mount, a cylindrically shaped dosimeter housing comprising a cylindrical recess in which the dosimeter mount is rotatably mounted, a cylindrically shaped knob extending from a proximal end of the dosimeter mount, wherein the piece of OSLM has an exposed surface, wherein the device has an a reading configuration in which the exposed surface of the piece of OSLM is exposed in an opening of the dosimeter housing, wherein the device has a shielded configuration in which the exposed surface of the piece of OSLM is shield by the dosimeter housing, wherein the device is movable between the shielded configuration and the reading configuration by rotating the dosimeter mount relative to the dosimeter housing about a longitudinal axis by twisting the knob.