CN108519616A - A kind of scintillator design principle and method improving industry CT detectivity - Google Patents
A kind of scintillator design principle and method improving industry CT detectivity Download PDFInfo
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- CN108519616A CN108519616A CN201810263395.2A CN201810263395A CN108519616A CN 108519616 A CN108519616 A CN 108519616A CN 201810263395 A CN201810263395 A CN 201810263395A CN 108519616 A CN108519616 A CN 108519616A
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- Prior art keywords
- scintillator
- photodetector
- detectivity
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- method improving
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/20—Measuring radiation intensity with scintillation detectors
- G01T1/202—Measuring radiation intensity with scintillation detectors the detector being a crystal
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Molecular Biology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Measurement Of Radiation (AREA)
Abstract
The invention discloses a kind of scintillator design principles and method improving industry CT detectivity, scintillator and reflectance coating, the scintillator design uses cylindrical shape, it is designed as semicircle spherical shape in cylindrical member at one end, the other end is designed as hemispherical, and it is cut flat on top, photodetector is installed, on the scintillator, the rest part in addition to detector receiving plane plates reflectance coating, the scintillator is translucent crystal, fluorescence can transmit a distance inside it, and after multiple internal reflection, the fluorescence of other faces can also reach receiving plane；Scintillator is designed as cylindrical shape by the present invention, and is cut flat on top, and photodetector is installed, and the area that the top of scintillator is cut flat with is consistent with the receiving area of photodetector, can substantially enhance the light energy of photodetector reception.
Description
Technical field
The present invention relates to industry CT detector application field, specifically a kind of scintillator for improving industry CT detectivity
Design principle and method.
Background technology
In the application of industry CT (Tomography), scintillator is the important portion that high-energy ray is converted to visible light
Part.
Conventional scintillator is cuboid, and after receiving ray, each face can send out the visible fluorescence of same intensity,
Its principle is as shown in Figure 1.In conventional application, photodetector carries out the visible light in the face close on a face of scintillator
It collects and measures.Since scintillator is that 6 faces shine, the light energy on remaining 5 face without detector will be unable to detect；Scintillator
Light-emitting surface and photodetector size mismatch, even if the light energy in the face can not be collected completely if receiving plane.
In order to improve detectivity, in the case where transmitted intensity is constant, it is necessary to expansion scintillator as much as possible
Volume or the area for expanding scintillator；And after expanding scintillator volume or area, a scintillator represent sensing point just compared with
Greatly, which in turn reduces space exploration precision.
So it is difficult to taking into account the detectivity and space exploration precision of industry CT simultaneously.
Invention content
The purpose of the present invention is to provide a kind of scintillator design principles and method improving industry CT detectivity, are
The receiving efficiency that photodetector shines to scintillator is improved, scintillator is designed as the spherical cylinder of both ends semicircle, is passed through
The length for extending column improves total luminous energy, since the extension of length does not interfere with space exploration precision, can solve
State the problem of being proposed in background technology.
To achieve the above object, the present invention provides the following technical solutions：
A kind of scintillator design principle and method improving industry CT detectivity, to improve photodetector to flicker
The luminous receiving efficiency of body, scintillator design use cylindrical shape, are designed as semicircle spherical shape in cylindrical member at one end, separately
One end is designed as hemispherical, and is cut flat on top, installs photodetector.
As a further solution of the present invention：The receiving plane of area and photodetector that the top of the scintillator is cut flat with
Product is consistent.
As a further solution of the present invention：On the scintillator, the rest part in addition to detector receiving plane, plating
Reflectance coating.
As a further solution of the present invention：The scintillator is translucent crystal, and fluorescence can transmit one section inside it
Distance, after multiple internal reflection, the fluorescence of other faces can also reach receiving plane, it is possible thereby to substantially enhance photodetection
The light energy that device receives.
Compared with prior art, the beneficial effects of the invention are as follows：Scintillator is designed as cylindrical shape by the present invention, is only increased
The length of big cylinder greatly improves the luminous energy of scintillator under the premise of not influencing space exploration precision；Scintillator is set
It is calculated as cylindrical shape, and reflectance coating is plated in the other parts in addition to photodetector receiving plane, greatly improves photodetection
The receiving efficiency that device shines to scintillator；Scintillator is designed as cylindrical shape, and is cut flat on top, installs photodetector,
The area that the top of scintillator is cut flat with is consistent with the receiving area of photodetector, finally substantially enhances what photodetector received
Light energy realizes the target for improving detectivity.
Description of the drawings
Fig. 1 is the principle schematic of conventional scintillator.
Fig. 2 is the structural schematic diagram that scintillator is cylindrical shape, both ends are semi-round ball in the present invention.
Fig. 3 is the structural schematic diagram that ray passes through scintillator in the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig. 2~3, in the embodiment of the present invention, a kind of scintillator design principle improving industry CT detectivity
And method, including scintillator and reflectance coating, the scintillator, which designs, uses cylindrical shape, and half is designed as in cylindrical member at one end
Spheroidal, the other end is designed as hemispherical, and is cut flat on top, installs photodetector.
The area that the top of the scintillator is cut flat with is consistent with the receiving area of photodetector.
On the scintillator, the rest part in addition to detector receiving plane plates reflectance coating.
It is negligible to the attenuation of ray since the thickness of reflectance coating is very thin when ray passes through scintillator.
In addition to faying face, the fluorescence that scintillator other faces are sent out is internally reflected by the reflectance coating on its surface；Since scintillator is translucent
Crystal, fluorescence can transmit a distance inside it, and after multiple internal reflection, the fluorescence of other faces can also reach reception
Face, it is possible thereby to the light energy that substantially enhancing photodetector receives.
Such design method greatly improves the luminous energy and light-emitting area of scintillator.
The invention is not limited in above-described embodiments, on the basis of technical solution disclosed by the invention, the skill of this field
For art personnel according to disclosed technology contents, one can be made to some of which technical characteristic by not needing performing creative labour
A little simple modification, equivalent change and modifications, belong in the range of technical solution of the present invention.
In the description of this specification, it should be noted that unless otherwise clearly defined and limited, term " setting ",
" connected " and " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally connect
It connects；It can be directly connected, can also can be indirectly connected through an intermediary the connection inside two elements.For this
For the those of ordinary skill in field, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
Claims (4)
1. a kind of scintillator design principle and method improving industry CT detectivity, including scintillator and reflectance coating, special
Sign is that the scintillator is cylindrical structure, is designed as semicircle spherical shape in cylindrical member at one end, the other end is designed as hemisphere
Shape, and cut flat on top, photodetector is installed.
2. a kind of scintillator design principle and method improving industry CT detectivity according to claim 1, special
Sign is, the receiving area for the area and photodetector that the top of the scintillator is cut flat with is equal.
3. a kind of scintillator design principle and method improving industry CT detectivity according to claim 2, special
Sign is, on the scintillator, the rest part in addition to detector receiving plane plates reflectance coating.
4. a kind of scintillator design principle and method improving industry CT detectivity according to claim 1, special
Sign is that the scintillator is translucent crystal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810263395.2A CN108519616A (en) | 2018-03-26 | 2018-03-26 | A kind of scintillator design principle and method improving industry CT detectivity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810263395.2A CN108519616A (en) | 2018-03-26 | 2018-03-26 | A kind of scintillator design principle and method improving industry CT detectivity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108519616A true CN108519616A (en) | 2018-09-11 |
Family
ID=63434457
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810263395.2A Pending CN108519616A (en) | 2018-03-26 | 2018-03-26 | A kind of scintillator design principle and method improving industry CT detectivity |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2389619Y (en) * | 1998-06-05 | 2000-08-02 | 深圳奥沃国际科技发展有限公司 | Ray detection device |
| CN1740819A (en) * | 2005-09-26 | 2006-03-01 | 中国科学院高能物理研究所 | The scintillation detector that is used for nuclear imaging device |
| US20080011957A1 (en) * | 2006-07-17 | 2008-01-17 | James Richard Williams | Methods and apparatus for geophysical logging |
| CN102879798A (en) * | 2012-10-18 | 2013-01-16 | 中国科学院高能物理研究所 | Scintillation detector for ray imaging device |
| JP2014020860A (en) * | 2012-07-17 | 2014-02-03 | Japan Atomic Energy Agency | Neutron detector and neutron image detector using scintillator |
| CN104049270A (en) * | 2013-11-22 | 2014-09-17 | 沈阳东软医疗系统有限公司 | Light guide, method for manufacturing light guide and radiation detector |
-
2018
- 2018-03-26 CN CN201810263395.2A patent/CN108519616A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2389619Y (en) * | 1998-06-05 | 2000-08-02 | 深圳奥沃国际科技发展有限公司 | Ray detection device |
| CN1740819A (en) * | 2005-09-26 | 2006-03-01 | 中国科学院高能物理研究所 | The scintillation detector that is used for nuclear imaging device |
| US20080011957A1 (en) * | 2006-07-17 | 2008-01-17 | James Richard Williams | Methods and apparatus for geophysical logging |
| JP2014020860A (en) * | 2012-07-17 | 2014-02-03 | Japan Atomic Energy Agency | Neutron detector and neutron image detector using scintillator |
| CN102879798A (en) * | 2012-10-18 | 2013-01-16 | 中国科学院高能物理研究所 | Scintillation detector for ray imaging device |
| CN104049270A (en) * | 2013-11-22 | 2014-09-17 | 沈阳东软医疗系统有限公司 | Light guide, method for manufacturing light guide and radiation detector |
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Application publication date: 20180911 |
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| WD01 | Invention patent application deemed withdrawn after publication |