Light detector, radiation detector and radiation tomography apparatus
a light detector and radiation detector technology, applied in tomography, material analysis using wave/particle radiation, instruments, etc., can solve the problems of reduced light detection efficiency, increased manufacturing cost, and difficulty in fabrication, so as to reduce the area, reduce the number of wirings, and reduce the effect of light detection efficiency
Inactive Publication Date: 2006-02-23
GE MEDICAL SYST GLOBAL TECH CO LLC
View PDF8 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
[0008] Therefore, a first object of the present invention is to provide a light detector capable of suppressing a decrease in the area of a light receiving section with an increase in the number of wirings and thereby suppressing a reduction in light detection efficiency.
[0009] A second object of the present invention is to provide a radiation detector capable of suppressing a decrease in the area of a light receiving section with an increase in the number of wirings and thereby suppressing a reduction in radiation detection efficiency.
[0010] A third object of the present invention is to provide a radiation tomography apparatus capable of suppressing a decrease in the area of a light receiving section with an increase in the number of wirings and thereby suppressing a reduction in radiation detection efficiency.
[0017] According to the light detector of the present invention, it is possible to suppress a decrease in the area of each of light receiving sections with an increase in the number of wirings and thereby suppress a reduction in light detection efficiency. According to the radiation detector of the present invention, it is possible to suppress a decrease in the area of each of light receiving sections with an increase in the number of wirings and thereby suppress a reduction in radiation detection efficiency. According to the radiation tomography apparatus of the present invention, it is possible to suppress a decrease in the area of each of light receiving sections with an increase in the number of wirings and thereby suppress a reduction in radiation detection efficiency. Further objects and advantages of the present invention will be apparent from the following description of the preferred embodiments of the invention as illustrated in the accompanying drawings.
Problems solved by technology
However, the multi-slice type X-ray CT apparatus is accompanied by the problem that as the number of the photodiodes 243 in the slice direction (z direction) increases, the number of the wirings 245 that pass through the regions among the photodiodes arranged in the x direction increases, and there is hence a need to form fine wirings in the regions among the photodiodes 243, thereby causing a difficulty in its fabrication and a rise in its manufacturing cost.
A problem, however, arises in that since the area of the photodiode 243 becomes small correspondingly, light detection efficiency is reduced.
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0026] Embodiments of the present invention will hereinafter be described with reference to the accompanying drawings.
[0027]FIG. 1 is a schematic configurational view of a radiation tomography apparatus (X-ray CT apparatus) according to an embodiment. The X-ray CT apparatus 100 according to the present embodiment is equipped with an operating console 1, an imaging table 10 and a scanning gantry 20.
[0028] The operating console 1 is provided with an input device 2 which receives an input from an operator, a central processing unit 3 which executes an image reconstructing process or the like, a data acquisition buffer 5 which collects projection data obtained by the scanning gantry 20, a CRT 6 which displays a CT image reconstructed from the projection data, and a memory device 7 which stores programs, data and an X-ray CT image therein.
[0029] The imaging table 10 includes a cradle 12 which carries a subject placed thereon in a bore (cavity portion) of the scanning gantry 20 and car...
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
Login to View More Abstract
A light detector includes a plurality of light receiving sections which are formed in a substrate and generate signal charges corresponding to the amount of incident light, and a plurality of wirings which are formed on the substrate and fetch the signal charges from the light receiving sections, wherein at least some of the plurality of wirings are disposed so as to overlap with other light receiving sections different from the light receiving sections connected to fetch the signal charges.
Description
BACKGROUND OF THE INVENTION [0001] The present invention relates to a light detector, a radiation detector and a radiation tomography apparatus. [0002] An X-ray detector wherein X-ray detection modules each formed with a plurality of photodiodes are provided side by side in plural form in a channel direction, has been used in a multi-slice type X-ray CT apparatus (refer to, for example, the following patent document 1). [0003]FIG. 7 is a fragmentary plan view of a conventional X-ray detector. As shown in FIG. 7, a plurality of photodiodes 243 are disposed in matrix form in the X-ray detector, more specifically, one X-ray detection module of the X-ray detector. In the drawing, a z direction corresponds to a slice direction (body axial direction) and an x direction corresponds to a channel direction, respectively. [0004] Since wirings (signal lines) 245 for fetching signal charges generated in the photodiodes 243 hardly pass light, they have heretofore been disposed in regions among t...
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
Login to View More IPC IPC(8): G01N23/00
CPCA61B6/032G01T1/2985G01T1/1644H04N25/78
Inventor MORITAKE, MASAHIROPOSSIN, GEORGE EDWARDZEMAN, GREGORY SCOTT
Owner GE MEDICAL SYST GLOBAL TECH CO LLC