APPARATUS AND METHOD FOR PHOTON COUNTING DETECTION, AND RADIOGRAPHIC IMAGING APPARATUS

摘要

A photon counting detection (PCD) apparatus and radiographic imaging apparatus including the PCD apparatus are provided. The PCD apparatus includes a negative-feedback resistor instead of a negative-feedback capacitor in a signal amplifying apparatus thereof to minimize a leakage current, circuit noise, and a photoelectric accumulation effect at a high speed, so that an improved image may be obtained.

主权项

1. A photon counting detection (PCD) apparatus comprising:
a photoelectric conversion material portion configured to absorb radioactive rays and to generate an electric-charge signal corresponding to an energy of the absorbed radioactive rays; an amplification unit comprising:
an active resistor configured to convert the electric-charge signal generated by the photoelectric conversion material portion into a voltage signal; andan amplifier configured to amplify the voltage signal converted by the active resistor; and a counting unit configured to count the voltage signal converted and amplified by the amplification unit.