[The DRIM-1 medical x-ray radiation dosimeter].

The paper describes a DRIM-1 X-ray monitor which directly measures and records the product of an absorbed (exposure) dose and the actual area of X-ray beam onto the outside surface of the depth diaphragm (cGy.cm2). The principle of action of the device is based on the measurement of the charge coming from the detecting unit--a preamplifier ionization chamber. The device may be used to control the time-stability of a radiation signal in the X-ray apparatus.