Unlock instant, AI-driven research and patent intelligence for your innovation.

Radiation detector module, radiation detector, and radiographic imaging apparatus

A radiation detector and detector technology, applied in the field of radiation detection

Pending Publication Date: 2022-02-25
HITACHI HEALTHCARE MFG LTD
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the radiation detector module, if the scintillator, photodiode, and AFE are mounted on the same substrate, and the power supply to the AFE and the AFE control function are also added to the same substrate, the substrate will increase in size. As a result, radiation detection The length of the body axis direction of the device becomes a problem

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Radiation detector module, radiation detector, and radiographic imaging apparatus
  • Radiation detector module, radiation detector, and radiographic imaging apparatus
  • Radiation detector module, radiation detector, and radiographic imaging apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] Next use Figure 2A ~ Figure 2E The radiation detector according to Example 1 will be described.

[0076] According to the radiation detector of this embodiment, the radiation detector module 107 includes: a detector substrate 201 mounted with a plurality of scintillators 108 for converting X-rays into light, photodiodes 109 for converting light into analog electrical signals, and responsible for The AD conversion chip 200 that amplifies and converts analog electrical signals into digital signals; the control board 202, which supplies and controls power to the AFE; the stack connector 203, which connects the two boards; and the support structure 204, which It is used to fix the two substrates between the detector substrate 201 and the control substrate 202 .

[0077] By dividing the radiation detector module 107 into a detector substrate 201 and a control substrate 202 and making these two substrates a two-stage structure in the Y-axis direction, the length in the body...

Embodiment 2

[0087] In the radiation detector of Embodiment 2, floating connectors are used in the stack connector 203 that connects the detector substrate 201 and the control substrate 202 in Embodiment 1. FIG. A resin substrate is used for the control substrate 202, and a ceramic substrate is used for the detector substrate 201 in order to increase the wiring density and flatness of the photodiode mounting surface accompanying the increase in the number of rows, but the tolerance of the ceramic substrate Large, its absorption becomes a subject.

[0088] use Figure 6A ~ Figure 6C The radiation detector of this embodiment will be described. The detector substrate 201 is made of a ceramic substrate in order to increase the wiring density as the number of columns increases, but the tolerance of the ceramic substrate is large, and its absorption becomes a problem.

[0089] Such as Figure 6A as well as Figure 6B As shown, the positional tolerances (ΔX1, ΔZ1) and (ΔX2, ΔZ2) of the connec...

Embodiment 3

[0092] Embodiment 3 is an embodiment of a structure for X-ray shielding of a radiation detector module. In the radiation detector module, the X-ray sensor unit needs to be arranged in the X-ray irradiation field, and on the other hand, each electrical component needs to prevent component failure due to X-ray irradiation. Therefore, if Figure 7 As shown, in this embodiment, the scintillator 108 and the photodiode 109 on the detector substrate 201, which is the X-ray sensor part, are arranged inside the X-ray irradiation field 700, and the stack connector 203 and the AD conversion chip 200 are arranged It is located outside the X-ray irradiation field, thereby preventing failure of electrical components caused by direct X-rays.

[0093] In addition, it is also necessary to shield the X-rays that pass through the subject and are scattered to the electrical components. exist Figure 8A An example in which an X-ray shield 800 is arranged between the photodiode 109 and the AD co...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

There are provided a radiation detector module, a radiation detector, and a radiographic imaging apparatus. A radiation detector module, a radiation detector, and a radiographic imaging apparatus which make it possible to increase the row number while suppressing a length in a body-axis direction are provided. The radiation detector module includes a detector substrate (201) on which a scintillator (108), a photodiode (109), and AD conversion chips (200) are loaded, and a control substrate (202) which supplies power to the detector substrate and controls the operation of an AD conversion unit (AFE) of each AD conversion chip of the detector substrate. The radiation detector which suppresses the length in the body-axis direction is configured by connecting together the two substrates so as to form a two-stage structure by stacking connectors (203).

Description

technical field [0001] The present invention relates to radiation detection technology, and relates to a radiation detector module, a radiation detector, a radiation detector system, or a radiation imaging device including the radiation detector. Background technique [0002] In recent years, multi-slice type radiation detectors capable of imaging a wide range in a short period of time have become mainstream. In this multi-slice type radiation detector, an increase in the number of columns is required, but on the other hand, as the number of columns increases, there is a problem that it becomes difficult to take out analog signals from photodiodes. Therefore, it is disclosed in Patent Document 1. The following technology is realized: by mounting the scintillator, photodiode, and AD conversion chip on the same substrate, it is easy to connect the analog signal line from the photodiode to the AD conversion part, that is, the AFE (Analog Front End, analog front end). increase ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/00
CPCA61B6/42A61B6/4266A61B6/44A61B6/4429G01T1/20182G01T1/2019A61B6/4233A61B6/032G01T1/2018A61B6/4208
Inventor 林达彦石津崇章小野内雅文
Owner HITACHI HEALTHCARE MFG LTD