Patent ID: 9223030
Filing Date: 2015-12-29
Classification: A61B,G01T

Abstract:
1. Radiation detection equipment comprising: a semiconductor radiation detector having a semiconductor crystal made of thallium bromide; a capacitor of applying a voltage to the semiconductor radiation detector; and at least one DC power source of respectively accumulating positive charges and negative charges in either of electrodes of the capacitor; a current regulator of allowing a current to flow from the DC power source to the electrode of the capacitor; at least two relays connected with a wire which connects the DC power source and the electrode of the capacitor; an amplifier amplifying an output signal of the semiconductor radiation detector; a first control unit controlling opening and closing of the relays; and a second control unit for polarity integration of transmitting command signals comprised of “Apply positive bias”, “Apply negative bias”, “Reverse bias from positive to negative”, and “Reverse bias from negative to positive” into the amplifier and the first control unit, wherein a cathode and an anode of the semiconductor radiation detector are formed of at least one kind of a metal selected from gold, platinum and palladium, and wherein the DC power source periodically reverses a voltage of accumulating positive charges and a voltage of accumulating negative charges in either of the electrodes of the capacitor per interval shorter than 10 min, thereby to apply the resulting voltage thereto.