CN102319082A - High voltage circuit fixing and protecting device for positron emission tomography (PET) system - Google Patents
High voltage circuit fixing and protecting device for positron emission tomography (PET) system Download PDFInfo
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- CN102319082A CN102319082A CN 201110186537 CN201110186537A CN102319082A CN 102319082 A CN102319082 A CN 102319082A CN 201110186537 CN201110186537 CN 201110186537 CN 201110186537 A CN201110186537 A CN 201110186537A CN 102319082 A CN102319082 A CN 102319082A
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Abstract
The invention provides a high voltage circuit fixing and protecting device for a positron emission tomography (PET) system. The high voltage circuit fixing and protecting device is used for fixing and protecting a high voltage circuit distributing board for the PET system. The high voltage circuit fixing and protecting device comprises a U-shaped bottom plate, a foundation and a top cover which are symmetrically fixed at two U-shaped port ends of the U-shaped bottom plate and are used for sealing two U-shaped port ends of the U-shaped bottom plate; and two U-shaped ends, which are vertical to the foundation and the top cover, of the U-shaped bottom plate are provided with guide grooves for accommodating the high voltage circuit distributing board. By the device, the high voltage distributing circuit board for the PET system can be fixed and protected, and a human body is prevented from being hurt by high voltage, and the device provides great convenience for the assembly and maintenance of a circuit board.
Description
Technical field
The present invention relates to the mounting technology field of PET detection system, more particularly, relate to the fixing and protector of the high pressure distributor circuit plate of a kind of PET system.
Background technology
In PET (Positron Emission Tomography, PET scanner) uses, require energy, and hit position of detector and measure accurately a pair of gamma ray that produces behind the positron annihilation.Present topmost PET panel detector structure is scintillator arrays and photomultiplier tube (PMT) array coupled structure; Its clinical videograph process is: radionuclide (like F-18 etc.) labelling that will launch positron to can participant soma blood flow or the chemical compound of metabolic process on, the radionuclide that indicates the sub-chemical compound of positively charged is expelled in person under inspection's body.Let the person under inspection in the effective field of view scope of PET, carry out the PET video picture.The positron that active nucleus is launched move in vivo behind about 1mm with tissue in negatron combines annihilation radiation takes place, produce two energy equal (511KeV), γ photon in the opposite direction.Because two photons paths in vivo are different, also there is certain difference the time that arrives detector, if in the official hour window, (be generally 0-15us), when probe system detects two photons that are mutually 180 degree (scholar's 0.25 degree).Be a coincident event, detector is just seen a time pulse respectively off, and pulse processor becomes square wave with pulse, and after coincident circuit carried out data category to it, the work station of making a gift to someone carried out image reconstruction.Just obtain the image of transverse section, partes corporis humani position, crown section and sagittal section.
In PET detector operation process, the amplification of photomultiplier tube is one of key factor that influences PET detector detection efficient.The amplification of photomultiplier tube depends primarily on inter-electrode voltage, and voltage high-amplification-factor more is big more, and the photomultiplier tube that uses on the PET detector system usually need provide the high pressure of kilovolt could satisfy the requirement of amplification.Have hundreds ofly to thousands of photomultiplier tubes in every PET equipment, these photomultiplier tubes are around the direction of 360 degree is distributed in sweep object.The required high pressure of photomultiplier tube produces through insulation crust sealing high voltage power supply, is assigned on the photomultiplier tube through the high-tension circuit distribution plate then.
Because the high pressure of photomultiplier tube is last kilovolt; 36 volts the safe voltage that superman's body far away can bear; Cause personal injury for fear of high pressure occurring, be necessary to design a kind of screening arrangement of high-tension circuit plate, the high pressure distributor circuit is isolated with operator and person under inspection.
Summary of the invention
In view of the above problems, the purpose of this invention is to provide a kind of high-tension circuit plate shielding that can be applied to the PET system and be convenient to the high-tension circuit fixing protector installing, overhaul.
The high-tension circuit fixing protector of a kind of PET provided by the invention system is used for fixing the high-tension circuit distribution plate of the said PET of protection system, comprising:
The U-shaped base plate;
A U-shaped mouth end that is fixed on said U-shaped base plate is to seal the top cover of said U-shaped mouth end; And
Offer the guide groove that is used to hold said high-tension circuit distribution plate at said U-shaped base plate and two perpendicular U-shaped ends of said top cover.
Wherein, preferred construction is also to comprise: corresponding another U-shaped mouth end of said U-shaped base plate that is fixed on said top cover is to seal the base of said U-shaped mouth end.
Wherein, preferred construction is also to comprise protecgulum, to seal the formed high-tension circuit fixing protector of said U-shaped base plate, base and top cover.
Wherein, preferred construction is that said protecgulum is a U type or plate.
Wherein, preferred construction is that said protecgulum is connected through screw, draw-in groove or glue fixing with said U-shaped base plate.
Wherein, preferred construction is on said protecgulum, to offer high-tension bus-bar and draw opening.
Wherein, preferred construction is that said U-shaped base plate, base and top cover all adopt nonconducting engineering plastics to process.
Utilize the present invention, can in the high pressure distributor circuit plate of fixing and protection PET system, protect the injury of high pressure to human body, the design of guide barrel construction simultaneously also provides great facility for the circuit board I& M.
In order to realize above-mentioned and relevant purpose, one or more aspects of the present invention comprise the characteristic that the back will specify and in claim, particularly point out.Following explanation and accompanying drawing have specified some illustrative aspects of the present invention.Yet, the indication of these aspects only be some modes that can use in the variety of way of principle of the present invention.In addition, the present invention is intended to comprise all these aspects and their equivalent.
Description of drawings
Through with reference to below in conjunction with the explanation of accompanying drawing and the content of claims, and along with to more complete understanding of the present invention, other purpose of the present invention and result will understand more and reach easy to understand.In the accompanying drawings:
Fig. 1 is the decomposition texture sketch map according to the high-tension circuit fixing protector of the embodiment of the invention;
Fig. 2 is the part combinative structure sketch map according to the high-tension circuit fixing protector of the embodiment of the invention;
Fig. 3 is applied to the structural representation of the embodiment of the invention for PET system high pressure circuit distribution plate;
Fig. 4 is the combinative structure sketch map of high-tension circuit fixing protector according to another embodiment of the present invention.
Identical label is indicated similar or corresponding feature or function in institute's drawings attached.
The specific embodiment
Below will combine accompanying drawing that specific embodiment of the present invention is described in detail.
Fig. 1 and Fig. 2 show respectively according to the decomposition of the high-tension circuit fixing protector of the embodiment of the invention and part combinative structure sketch map.
As depicted in figs. 1 and 2; High-tension circuit fixing protector 100 comprises base 110, U-shaped base plate 120, backup plate 130 and top cover 140; Wherein be provided with the guide groove 122 that is used to hold PET system high pressure circuit distribution plate in two ends of U-shaped base plate 120; The length of guide groove 122 can be held PET system high pressure circuit distribution plate more than or equal to the length of PET system high pressure circuit distribution plate to guarantee base 110, U-shaped base plate 120 and top cover 140 formed spatial accommodations fully.
Wherein, base 110 can independent setting as shown in Figure 1, can be base with 100 hard-wired planes of high-tension circuit fixing protector also, and therefore, in high-tension circuit fixing protector 100 of the present invention, base 110 is optional.
In order to shield the electrostatic field that PET system high pressure circuit distribution plate is produced effectively, base 110, U-shaped base plate 120 and top cover 140 all adopt the high pressure resistant insulation material to process, like nonconducting engineering plastics, electro-insulating rubber, insulation silica gel etc.
Fig. 3 is the structural representation that PET system high pressure circuit distribution plate is applied to the embodiment of the invention.As shown in Figure 3, in the present embodiment, high-tension circuit distribution plate 300 is rectangular printed circuit board (PCB)s, is equipped with above the voltage circuit with regulations that boosts, and the cable hole 301 of high-tension bus-bar is arranged.When fixing and assembling these high-tension circuit distribution plates 300, the guide groove 122 on the U-shaped base plate 120 in the high-tension circuit fixing protector provided by the invention provides great facility, and the length of guide groove is more than or equal to the length of high-tension circuit distribution plate.
In practical set; At first 120 1 U-shaped mouths of U-shaped base plate end is fixed on the detector system plane; Then the high-tension circuit distribution plate is put under along guide groove in the U-shaped space of U-shaped base plate 120, then another U-shaped mouth end with U-shaped base plate 120 gets final product with top cover 140 sealings.The detector system plane of this moment just is equivalent to the base of high-tension circuit fixing protector of the present invention.
Can find out through the foregoing description; High-tension circuit fixing protector provided by the invention is in the high pressure distributor circuit plate of fixing and protection PET system; Also can protect the radiation of high pressure to human body, the design of guide barrel construction simultaneously also provides great facility for the circuit board I& M.
Fig. 4 is the combinative structure sketch map of the high-tension circuit fixing protector of another embodiment of the present invention.In the embodiment shown in fig. 4; High-tension circuit fixing protector 100 also comprises protecgulum 130; Be used for sealing U-shaped base plate 120, base 110 and top cover 140 formed high-tension circuit fixing protectors; Like this, U-shaped base plate 120, base 110, top cover 140 and protecgulum 130 and just formed the confined space that holds PET system high pressure distributor circuit plate provide the protection of secure more for PET system high pressure distributor circuit plate.
For the ease of drawing of PET system high pressure distributor circuit plate mesohigh electric wire, among the embodiment shown in Figure 4, on protecgulum 130, also offer high-tension bus-bar and draw opening 132.After the high-tension circuit distribution plate is inserted U-shaped base plate 120 along guide groove, just can high-tension bus-bar be drawn opening 132 from the high-tension bus-bar of protecgulum 130 and draw.
Need to prove; Though protecgulum is a U-shaped in the embodiment shown in fig. 4; But under the enough dark situation of U-shaped base plate 120, base 110 and top cover 140 formed spatial accommodations, protecgulum also can adopt plate shaped, and this all expects to those skilled in the art easily.
As above with the mode of example the high-tension circuit fixing protector of PET system has been described according to the present invention with reference to accompanying drawing.But, it will be appreciated by those skilled in the art that the high-tension circuit fixing protector that proposes for the invention described above, can also on the basis that does not break away from content of the present invention, make various improvement.Therefore, protection scope of the present invention should be confirmed by the content of appending claims.
Claims (7)
1. the high-tension circuit fixing protector of a PET system, said fixing protector are used for fixing the high-tension circuit distribution plate of the said PET of protection system, it is characterized in that said fixing protector comprises:
U-shaped base plate (120);
A U-shaped mouth end that is fixed on said U-shaped base plate (120) is to seal the top cover (140) of said U-shaped mouth end; And
Offer the guide groove that is used to hold said high-tension circuit distribution plate at said U-shaped base plate (120) and two perpendicular U-shaped ends of top cover (140).
2. high-tension circuit fixing protector as claimed in claim 1 is characterized in that, also comprises:
Corresponding another U-shaped mouth end of said U-shaped base plate (120) that is fixed on said top cover (140) is to seal the base (110) of said U-shaped mouth end.
3. high-tension circuit fixing protector as claimed in claim 1 is characterized in that, also comprises:
Protecgulum (130) is to seal said U-shaped base plate (120), base (110) and the formed high-tension circuit fixing protector of top cover (140).
4. high-tension circuit fixing protector as claimed in claim 3 is characterized in that,
Said protecgulum (130) is a U type or plate.
5. high-tension circuit fixing protector as claimed in claim 4 is characterized in that,
Said protecgulum (130) is fixedly connected through screw or draw-in groove with said U-shaped base plate (120).
6. high-tension circuit fixing protector as claimed in claim 3 is characterized in that,
On said protecgulum (130), offer high-tension bus-bar and draw opening (132).
7. high-tension circuit fixing protector as claimed in claim 2 is characterized in that,
Said U-shaped base plate (120), base (110) and top cover (140) all adopt nonconducting engineering plastics to process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110186537 CN102319082A (en) | 2011-07-05 | 2011-07-05 | High voltage circuit fixing and protecting device for positron emission tomography (PET) system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110186537 CN102319082A (en) | 2011-07-05 | 2011-07-05 | High voltage circuit fixing and protecting device for positron emission tomography (PET) system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102319082A true CN102319082A (en) | 2012-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110186537 Pending CN102319082A (en) | 2011-07-05 | 2011-07-05 | High voltage circuit fixing and protecting device for positron emission tomography (PET) system |
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| CN (1) | CN102319082A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003057355A (en) * | 2001-08-21 | 2003-02-26 | Fuji Electric Co Ltd | Semiconductor radiation detector for alpha-ray dust monitor |
| EP1555547A1 (en) * | 2004-01-13 | 2005-07-20 | Hitachi Ltd. | Radiological imaging apparatus and its detector unit |
| CN201115211Y (en) * | 2007-08-03 | 2008-09-10 | 黄鹏云 | Heat radiation shell |
| CN202161327U (en) * | 2011-07-05 | 2012-03-14 | 刘继国 | High-voltage circuit fixing and protecting device of PET (Positron Emission Tomography) system |
-
2011
- 2011-07-05 CN CN 201110186537 patent/CN102319082A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003057355A (en) * | 2001-08-21 | 2003-02-26 | Fuji Electric Co Ltd | Semiconductor radiation detector for alpha-ray dust monitor |
| EP1555547A1 (en) * | 2004-01-13 | 2005-07-20 | Hitachi Ltd. | Radiological imaging apparatus and its detector unit |
| CN201115211Y (en) * | 2007-08-03 | 2008-09-10 | 黄鹏云 | Heat radiation shell |
| CN202161327U (en) * | 2011-07-05 | 2012-03-14 | 刘继国 | High-voltage circuit fixing and protecting device of PET (Positron Emission Tomography) system |
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Application publication date: 20120118 |
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