CN105759300A - Adjustable double-energy peak generation apparatus - Google Patents
Adjustable double-energy peak generation apparatus Download PDFInfo
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- CN105759300A CN105759300A CN201410817278.8A CN201410817278A CN105759300A CN 105759300 A CN105759300 A CN 105759300A CN 201410817278 A CN201410817278 A CN 201410817278A CN 105759300 A CN105759300 A CN 105759300A
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- cask flask
- block
- emission signal
- energy peak
- collimating aperture
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Abstract
The invention provides an adjustable double-energy peak generation apparatus. The apparatus comprises a shielding tank main body, wherein the shielding tank main body comprises a shielding tank upper portion which is prepared by a metal material with a radiation signal shielding effect, and a shielding tank lower portion which is prepared by a metal material with a radiation signal shielding effect and is movably connected with the shielding tank upper portion to form a cavity; a signal source module fixedly arranged at a specific position on the inner wall of the shielding tank upper portion; a signal channel module, wherein the signal channel module comprises a first collimation hole arranged at a specific position of the shielding tank lower portion, a block which is prepared by a metal material with a radiation signal shielding effect and is arranged inside the cavity, a second collimation hole which is in opposite arrangement with the first collimation hole and is arranged at a specific position of the block, and a block support frame fixedly arranged at the shielding tank lower portion; and a signal detection module connected with the signal channel module.
Description
Technical field
The present invention relates to a kind of adjustable Dual-energy peak generator.
Background technology
At present when nuclear electron detector system is carried out many windows spatial coordination index test by the field of nuclear medicine, the method generally acknowledged is to use a cylindrical metal tank with shield effectiveness, cask flask is divided into two joints to be screwed up by screw thread being integrally forming, one end in cask flask is used for fixing radioactive source, and a collimating aperture is opened in the center of the other end.Demarcated many windows spatial coordination of nuclear electron detector system by known Dual-energy peak nucleic, radioactive source closes tight cask flask after loading cask flask, produce collimated source, can be utilized for the test of many windows spatial coordination；Or the nucleic using two kinds or more different-energy is tested, when such as the nuclear detector being acquired suitable in high-energy nucleic being tested, radioactive source it is generally required to use two kinds of radioactive sources (99mTc and131I) many windows spatial coordination index is measured.Carry out the operation of many windows spatial coordination test of nuclear electron detector system by prior art, Dual-energy peak radioactive source conventional at present is201Tl (TL), but201Tl (TL) is not the radionuclide that hospital is conventional, so ordering comparatively inconvenient.More nucleic is used to be all monoenergetic peak at the field of nuclear medicine at present, as57Co or99mTc, but there is bigger site error when carrying out the test of many windows spatial coordination with monoenergetic peak nucleic, this use that process that monoenergetic peak nucleic carries out demarcating is loaded down with trivial details is inconvenient to operate respectively.
Summary of the invention
The technical problem to be solved is to provide a kind of adjustable Dual-energy peak generator, solves in the prior art, many windows spatial coordination of the general monoenergetic peak Nuclide measurement detector different with two kinds of energy, or uses Dual-energy peak nucleic to measure；Use the problem that prior art measures complex operation, site error is big, radioactive source preparation is more difficult.The present invention have use a kind of conventional monoenergetic peak nucleic (as99mTc) can produce to carry out the feature at two energy peaks required during the test of many windows spatial coordination simultaneously.
To this, the present invention provides a kind of adjustable Dual-energy peak generator, including: cask flask main body, including: cask flask top, employing has the metal material to emission signal shield effectiveness and makes；Cask flask bottom, employing has the metal material to emission signal shield effectiveness and makes, and is connected one cavity of formation with described cask flask top movable；By adjust between described cask flask top and cask flask bottom screw up the degree of depth for regulate injection two kinds of emission signal between intensity；Signal source module, is fixedly installed on the ad-hoc location of described cask flask upper inside wall, is used for sending emission signal；Signalling channel module, including: the first collimating aperture, it is arranged at the ad-hoc location of described cask flask bottom；Block, employing has the metal material to emission signal shield effectiveness and makes, and is arranged at described cavity inside；Emission signal for stopping described signal source module is passed through to measure and excite new emission signal；Second collimating aperture, is oppositely arranged with described first collimating aperture, is arranged at the ad-hoc location of described block；With block bracing frame, be fixedly installed on described cask flask bottom, be used for supporting described block；And, signal detection module, it is connected with described signalling channel module, is used for detecting between two kinds of emission signal of injection whether reach equal isoequilibrium.
Adopt technique scheme, described cask flask top, cask flask bottom and block all adopt to be had the metal material to emission signal shield effectiveness and makes, the emission signal that described signal source module sends can be stopped, can pass through to increase reflection simultaneously and excite more new emission signal；Described cask flask top and cask flask bottom adopt movable connection method, the screw up degree of depth and the scalable that can pass through to adjust described cask flask top and cask flask bottom penetrate the ratio between two kinds of emission signal from described cask flask bottom, so that the exit dose of two kinds of emission signal is suitable；Prove through experiment, described cask flask top and cask flask bottom adopt the situation of fixing connected mode, described signal detection module cannot detect that two kinds of emission signal of injection reach equal isoequilibrium, visible, described cask flask top and cask flask bottom adopt movable connection method to have obvious Optimality.Owing to described first collimating aperture and the second collimating aperture are oppositely arranged, the emission signal of described signal source module injection produces collimated source and is detected by described signal detection module simultaneously.The problem that traditional Dual-energy peak generator exists bigger site error when carrying out the test of many windows spatial coordination can be overcome.Test proves that, the emission signal sent through described first collimating aperture and the second collimating aperture shows excellent directivity.
Preferably, described first collimating aperture is arranged at the center of described cask flask bottom, and described second collimating aperture is arranged at the center of described block.
Preferably, described second collimating aperture is the 1/3 of described first collimating aperture diameter.
Preferably, described signal source module, the second collimating aperture and the first collimating aperture are arranged on the same line successively from the inside to surface.
Preferably, described cask flask main body and block are cylindrical shape.
Adopt technique scheme, contribute to increasing reflection efficiency, exciting more emission signal, what columnar cask flask main body contributed to better regulating described cask flask top and cask flask bottom simultaneously screws up the degree of depth, then reaches two kinds of suitable purposes of emission signal exit dose.
Preferably, there is described in the metal material to emission signal shield effectiveness and include tungsten ferronickel material, tungsten material and lead material.
Preferably, described block bracing frame adopts pvc material to make.
Adopting technique scheme, described block bracing frame adopts and ray is made almost without the pvc material of attenuation, can play a supporting role, hardly ray be impacted again.
Preferably, described block bracing frame inwall is provided with the draw-in groove of block described in clamping.
Preferably, described block lower surface is plane, upper surface is taper concave surface.
Preferably, the thickness of described cask flask top, cask flask bottom and block can according to the nuclide energy adjustment used.
Compared with prior art, it is an advantage of the current invention that use monoenergetic peak nucleic produces two energy peaks；Simplify the operating process that test many windows spatial coordination is loaded down with trivial details；Radioactive source is convenient to be ordered, and saves cost；Guarantee the accuracy of two different energy same point positions on the detector, peak；Versatility, this device lays down built-in catch, is the cask flask used by nuclear medicine detectors debugger routine.
Accompanying drawing explanation
Fig. 1 is the structural representation of an embodiment of the present invention；
Fig. 2 is the structural representation of another kind embodiment of the present invention；
Fig. 3 is the structural representation of another kind embodiment of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferably embodiment of the present invention is described in further detail:
As shown in Figure 1, 2, cask flask main body 1, including: cask flask top 11, employing has the metal material to emission signal shield effectiveness and makes；Cask flask bottom 12, employing has the metal material to emission signal shield effectiveness and makes, and is flexibly connected one cavity of formation with described cask flask top 11；By adjust between described cask flask top 11 and cask flask bottom 12 screw up the degree of depth for regulate injection two kinds of emission signal between intensity；Signal source module 2, is fixedly installed on the ad-hoc location of described cask flask top 11 inwall, is used for sending emission signal；Signalling channel module 3, including: the first collimating aperture 31, it is arranged at the ad-hoc location of described cask flask bottom 12；Block 32, employing has the metal material to emission signal shield effectiveness and makes, and is arranged at described cavity inside；Emission signal for stopping described signal source module 2 is passed through to measure and excite new emission signal；Second collimating aperture 33, is oppositely arranged with described first collimating aperture 31, is arranged at the ad-hoc location of described block 32；With block bracing frame 34, be fixedly installed on described cask flask bottom 12, be used for supporting described block 32；And, signal detection module 4, it is connected with described signalling channel module 3, is used for detecting between two kinds of emission signal of injection whether reach equal isoequilibrium.
Adopt technique scheme, described cask flask top 11, cask flask bottom 12 and block 32 all adopt to be had the metal material to emission signal shield effectiveness and makes, the emission signal that described signal source module 2 sends can be stopped, can pass through to increase reflection simultaneously and excite more new emission signal；Described cask flask top 11 and cask flask bottom 12 adopt movable connection method, it is possible to regulate and penetrate the ratio between two kinds of emission signal by adjusting the degree of depth that screws up of described cask flask top 11 and cask flask bottom 12 from described cask flask bottom 12；Prove through experiment, described cask flask top 11 and cask flask bottom 12 adopt the situation of fixing connected mode, described signal detection module 4 cannot detect that two kinds of emission signal of injection reach equal isoequilibrium, visible, described cask flask top 11 and cask flask bottom 12 adopt movable connection method to have obvious Optimality.Owing to described first collimating aperture 31 and the second collimating aperture 33 are oppositely arranged, the emission signal of described signal source module 2 injection produces collimated source and is detected by described signal detection module 4 simultaneously.The problem that traditional Dual-energy peak generator exists bigger site error when carrying out the test of many windows spatial coordination can be overcome.Test proves that, the emission signal sent through described first collimating aperture 31 and the second collimating aperture 33 shows excellent directivity.
Preferably, described first collimating aperture 31 is arranged at the center of described cask flask bottom 12, and described second collimating aperture 33 is arranged at the center of described block 32.
Preferably, described second collimating aperture 33 is the 1/3 of described first collimating aperture 31 diameter.
Preferably, described signal source module the 2, second collimating aperture 33 and the first collimating aperture 31 are arranged on the same line successively from the inside to surface.
Preferably, described cask flask main body 1 and block 32 are cylindrical shape.
Adopt technique scheme, contribute to increasing reflection efficiency, exciting more emission signal, what columnar cask flask main body 1 contributed to better regulating described cask flask top 11 and cask flask bottom 12 simultaneously screws up the degree of depth, then reaches two kinds of suitable purposes of emission signal exit dose.
Preferably, there is described in the metal material to emission signal shield effectiveness and include tungsten ferronickel material, tungsten material and lead material.
Preferably, described block bracing frame 34 adopts pvc material to make.
Adopting technique scheme, described block bracing frame 34 adopts to be made almost without the pvc material of attenuation ray, can play a supporting role, hardly ray be impacted again.
Preferably, described block bracing frame 34 inwall is provided with the draw-in groove of block 32 described in clamping.
Preferably, described block 32 lower surface is plane, upper surface is taper concave surface.
Preferably, the thickness of described cask flask top 11, cask flask bottom 12 and block 32 can according to the nuclide energy adjustment used.
As it is shown on figure 3, the monoenergetic peak nucleic technetium that working strength is suitable (99mTc), testing with this device, record spectrum curve by detector system, monoenergetic peak nucleic technetium obtains the another one characteristic X-ray energy peak 6 except gamma-rays energy peak 5 by this device simultaneously.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, it is impossible to assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, it is also possible to make some simple deduction or replace, protection scope of the present invention all should be considered as belonging to.
Claims (10)
1. an adjustable Dual-energy peak generator, it is characterised in that including:
Cask flask main body (1), including: cask flask top (11), employing has the metal material to emission signal shield effectiveness and makes；Cask flask bottom (12), employing has the metal material to emission signal shield effectiveness and makes, and is flexibly connected one cavity of formation with described cask flask top (11)；The degree of depth is screwed up for regulating the intensity between two kinds of emission signal of injection between described cask flask top (11) and cask flask bottom (12) by adjusting；
Signal source module (2), is fixedly installed on the ad-hoc location of described cask flask top (11) inwall, is used for sending emission signal；
Signalling channel module (3), including:
First collimating aperture (31), is arranged at the ad-hoc location of described cask flask bottom (12)；
Block (32), employing has the metal material to emission signal shield effectiveness and makes, and is arranged at described cavity inside；Emission signal for stopping described signal source module (2) is passed through to measure and excite new emission signal；
Second collimating aperture (33), is oppositely arranged with described first collimating aperture (31), is arranged at the ad-hoc location of described block (32)；
With block bracing frame (34), be fixedly installed on described cask flask bottom (12), be used for supporting described block (32)；And,
Signal detection module (4), is connected with described signalling channel module (3), is used for detecting between two kinds of emission signal of injection whether reach equal isoequilibrium.
2. adjustable Dual-energy peak generator as claimed in claim 1, it is characterized in that, described first collimating aperture (31) is arranged at the center of described cask flask bottom (12), and described second collimating aperture (33) is arranged at the center of described block (32).
3. adjustable Dual-energy peak generator as claimed in claim 2, it is characterised in that described second collimating aperture (33) is the 1/3 of described first collimating aperture (31) diameter.
4. adjustable Dual-energy peak generator as claimed in claim 3, it is characterised in that described signal source module (2), the second collimating aperture (33) and the first collimating aperture (31) are arranged on the same line successively from the inside to surface.
5. adjustable Dual-energy peak generator as claimed in claim 1, it is characterised in that described cask flask main body (1) and block (32) are cylindrical shape.
6. adjustable Dual-energy peak generator as claimed in claim 1, it is characterised in that described in there is the metal material to emission signal shield effectiveness include tungsten ferronickel material, tungsten material and lead material.
7. adjustable Dual-energy peak generator as claimed in claim 1, it is characterised in that described block bracing frame (34) adopts pvc material to make.
8. adjustable Dual-energy peak generator as claimed in claim 1, it is characterised in that described block bracing frame (34) inwall is provided with the draw-in groove of block (32) described in clamping.
9. adjustable Dual-energy peak generator as claimed in claim 8, it is characterised in that described block (32) lower surface is plane, upper surface is taper concave surface.
10. adjustable Dual-energy peak generator as claimed in claim 1, it is characterised in that the thickness of described cask flask top (11), cask flask bottom (12) and block (32) can according to the nuclide energy adjustment used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410817278.8A CN105759300A (en) | 2014-12-18 | 2014-12-18 | Adjustable double-energy peak generation apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410817278.8A CN105759300A (en) | 2014-12-18 | 2014-12-18 | Adjustable double-energy peak generation apparatus |
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| CN105759300A true CN105759300A (en) | 2016-07-13 |
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| CN201410817278.8A Pending CN105759300A (en) | 2014-12-18 | 2014-12-18 | Adjustable double-energy peak generation apparatus |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101266216A (en) * | 2007-03-14 | 2008-09-17 | 清华大学 | Method for calibrating dual-energy CT system and image rebuilding method |
| CN201569748U (en) * | 2009-09-28 | 2010-09-01 | 北京滨松光子技术股份有限公司 | Dual-energy peak adjusting device |
| CN101937094A (en) * | 2009-06-30 | 2011-01-05 | 同方威视技术股份有限公司 | Dual energy x-ray array detector |
| CN204228966U (en) * | 2013-10-29 | 2015-03-25 | 深圳市贝斯达医疗器械有限公司 | A kind of adjustable Dual-energy peak generation device |
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2014
- 2014-12-18 CN CN201410817278.8A patent/CN105759300A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101266216A (en) * | 2007-03-14 | 2008-09-17 | 清华大学 | Method for calibrating dual-energy CT system and image rebuilding method |
| CN101937094A (en) * | 2009-06-30 | 2011-01-05 | 同方威视技术股份有限公司 | Dual energy x-ray array detector |
| CN201569748U (en) * | 2009-09-28 | 2010-09-01 | 北京滨松光子技术股份有限公司 | Dual-energy peak adjusting device |
| CN204228966U (en) * | 2013-10-29 | 2015-03-25 | 深圳市贝斯达医疗器械有限公司 | A kind of adjustable Dual-energy peak generation device |
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Application publication date: 20160713 |