Radiographic device

Patent metadata

Field	Value
Publication number	US-12416736-B2
Application number	US-202018252128-A
Country	US
Kind code	B2
Filing date	Nov 13, 2020
Priority date	Nov 13, 2020
Publication date	Sep 16, 2025
Grant date	Sep 16, 2025

Abstract

A radiation imaging apparatus includes a plurality of pixels configured to generate an electric charge corresponding to energy or the number of particles of incident radiation, a plurality of signal processing parts respectively connected to the plurality of pixels and configured to generate a digital value based on the electric charge provided by each of the pixels, and a circuit board in which a radiation detector including the plurality of pixels and the plurality of signal processing parts is disposed in a two-dimensional manner. Each of the plurality of signal processing parts includes a signal conversion part configured to convert an analog value based on the electric charge into the digital value, and a clock signal generation part configured to provide a clock signal for generating a digital value to the signal conversion part.

First claim

The invention claimed is:

1. A radiation imaging apparatus comprising:
a plurality of pixels configured to generate an electric charge corresponding to energy or the number of particles of incident radiation;
a plurality of signal processing parts respectively connected to the plurality of pixels and configured to generate a digital value based on the electric charge provided by each of the pixels; and
a circuit board in which a radiation detector including the plurality of pixels and the plurality of signal processing parts is disposed in a two-dimensional manner,
wherein each of the plurality of signal processing parts includes a signal conversion part configured to convert an analog value based on the electric charge into the digital value, and a clock signal generation part configured to provide the signal conversion part with a clock signal to convert the analog value based on the electric charge into the digital value.

2. The radiation imaging apparatus according to claim 1 , wherein the clock signal generation part starts an operation of providing the clock signal to the signal conversion part triggered by generation of the electric charge due to incidence of the radiation on the pixels, and wherein a number of output pulses of the clock signal is a predetermined number required for a conversion operation of the signal conversion part.

3. The radiation imaging apparatus according to claim 1 , further comprising:
a transmission signal generation part configured to provide a transmission signal for outputting the digital value from the signal processing part to the circuit board to each of the plurality of signal processing parts; and
a wiring unit configured to transmit the transmission signal to the signal processing part.

4. The radiation imaging apparatus according to claim 2 , further comprising:
a transmission signal generation part configured to provide a transmission signal for outputting the digital value from the signal processing part to the circuit board to each of the plurality of signal processing parts; and
a wiring unit configured to transmit the transmission signal to the signal processing part.

Assignees

• Univ Shizuoka Nat Univ Corp
• Anseen Inc

Inventors

• Aoki Toru
• Takagi Katsuyuki
• KOIKE Akifumi

Classifications

• G01T1/161

  Applications in the field of nuclear medicine, e.g. in vivo counting {(apparatus for radiation diagnosis A61B6/00)} · CPC title

• A61B6/00

  Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment (instruments measuring radiation intensity for application in the field of nuclear medicine, e.g. in vivo counting, G01T1/161) · CPC title

• G01T1/247 Primary

  Detector read-out circuitry (for processing gain or off-set correction H04N) · CPC title

• G01T1/2928 Primary

  using solid state detectors · CPC title