CN104707259A - High-energy X-ray protection device - Google Patents
High-energy X-ray protection device Download PDFInfo
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- CN104707259A CN104707259A CN201310681705.XA CN201310681705A CN104707259A CN 104707259 A CN104707259 A CN 104707259A CN 201310681705 A CN201310681705 A CN 201310681705A CN 104707259 A CN104707259 A CN 104707259A
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- high energy
- protection hammer
- hammer
- energy acclerator
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Abstract
The invention provides a high-energy X-ray protection device and belongs to the technical field of radiological protection. The high-energy X-ray protection device comprises a rack and a high-energy accelerator protection hammer, wherein the rack is provided with an high-energy accelerator used for treating patients; the high-energy accelerator protection hammer is arranged in the rack and is capable of absorbing high-energy X-rays, penetrating through the patient body, of the high-energy accelerator when the high-energy accelerator treats the patient; after the treatment conducted on the patient by the high-energy accelerator is finished, the high-energy accelerator protection hammer automatically retracts into the rack. According to the high-energy X-ray protection device, the protection requirement of the high-energy accelerator can be met under the premise that an existing machine room structure is not changed.
Description
Technical field
The present invention relates to radiation protection technical field, refer to a kind of sigmatron preventer especially.
Background technology
X-ray technology plays more and more important role in daily life and scientific research.In recent years, increasing application is obtained based on the detection of X-ray and imaging technique in fields such as industry, medical treatment, chemical industry.But X-ray energy is high, ionizing radiation will be caused through during air.During any ionization radiation irradiation object, entirety or the portion of energy of ionizing radiation will be absorbed by according to object.If by being organism according to object, can cause biological effect, the size of biological effect and endergonicly how much have substantial connection, the energy that is absorbed is more, and biological effect is more severe.For human body, accept too much irradiation and can cause body cell function reduction, and then bring out various disease.Research also confirms, Human body package can cause kinds of tumors to occur under X-ray, comprises leukemia, thyroid carcinoma, breast carcinoma and pulmonary carcinoma etc., also likely causes salivary gland, stomach, colon, bladder, ovary, central nervous system to unify cutaneous tumor.
In prior art; when utilizing LA45 high energy acclerator to treat patient; in order to protect operator; general employing concrete makes the primary protective barriers of LA45 high energy acclerator machine room to protect operator; but the thickness of concrete primary protective barriers is greater than 3 meters just can reach requirement of shelter, and the concrete primary protective barriers thickness of generic linear accelerator machine room be generally 1 meter more.If want to install LA45 high energy acclerator (highest energy 45MV) in generic linear accelerator machine room, if do not increase primary protective barriers thickness, obviously requirement of shelter can not be reached.For making protection up to standard, the thickness of primary protective barriers at least needs increase by 2 meters, adds building cost so first, second adds floor space, for the existing machine room of some old hospitals, is at all impracticable.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of sigmatron preventer, under the prerequisite not changing existing computer room structure, can meet the requirement of shelter of high energy acclerator.
For solving the problems of the technologies described above, embodiments of the invention provide technical scheme as follows:
On the one hand, a kind of sigmatron preventer is provided, comprises:
Frame, described frame is provided with the high energy acclerator in order to treat patient;
Be arranged in described frame, the high energy acclerator protection hammer that described high energy acclerator is perforated through the sigmatron of patient body can be absorbed when described high energy acclerator is treated patient; After described high energy acclerator terminates patient treatment, in frame described in described high energy acclerator protection hammer automatic retraction.
Further, described high energy acclerator is LA45 high energy acclerator.
Further, described high energy acclerator protection hammer comprises:
Be positioned at the bracing frame of described frame;
Be arranged in described frame, control support frame as described above bracing frame gear motor flexible in described frame;
Be positioned at the one-level protection hammer of support frame as described above;
Be arranged on support frame as described above, control described one-level protection hammer one-level protection hammer lead screw motor flexible in support frame as described above;
Be positioned at the secondary protection hammer of described one-level protection hammer;
Be arranged on described one-level protection hammer upper, control the flexible secondary protection hammer lead screw motor of described secondary protection hammer, wherein said one-level protection hammer and described secondary protect hammer into shape to stretch out direction consistent.
Further, described frame is provided with the first stopping means of restriction support frame as described above moving range;
Support frame as described above is provided with the second stopping means of restriction described one-level protection hammer moving range;
Described one-level protection hammer is provided with the 3rd stopping means of restriction described secondary protection hammer moving range.
Further, described one-level protection hammer and described secondary protection hammer are lead protection hammer.
Further, support frame as described above is made for adopting metal.
Further, the protective range of described high energy acclerator protection hammer be more than or equal to etc. the maximum launched field diagonal in the center circle that is diameter in the projected length of protective position.
Further, the width of described high energy acclerator protection hammer is no more than 90cm.
Further, described high energy acclerator protection hammer upper surface and isocentric distance are more than or equal to 50cm.
Further, described high energy acclerator protection hammer is not less than 5.35cm with the distance of patient treatment couch.
Further, the nose angle of described high energy acclerator protection hammer is fillet.
Embodiments of the invention have following beneficial effect:
In such scheme, in frame except the high energy acclerator be provided with in order to treat patient, be also provided with high energy acclerator protection hammer.When high energy acclerator is treated patient, high energy acclerator protection hammer can absorb the sigmatron that high energy acclerator is perforated through patient body, reduces the radiation pollution that X-ray causes to external world; After high energy acclerator terminates patient treatment, high energy acclerator protection hammer in automatic retraction frame, thus can realize under the prerequisite not changing existing computer room structure, the radiation protection problem existed when solving work in low protection level machine room.After sigmatron preventer of the present invention is installed, can the sigmatron being perforated through patient body be absorbed, thus greatly reduce the thickness of Concrete Anti revetment, reduce protection cost, reduce machine room floor space.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that the protection of embodiment of the present invention high energy acclerator hammers when being in position of readiness into shape;
Fig. 2 is the schematic diagram that the protection of embodiment of the present invention high energy acclerator hammers when being in operating position into shape;
Fig. 3 is that embodiment of the present invention patient treatment couch and high energy acclerator protect the position relationship schematic diagram between hammering into shape.
Reference numeral
3 secondary lead protection hammers are hammered in 1 steelframe 2 one-level lead protection into shape
4 stopping means 5 steelframe gear motor 6 one-level lead protection hammer lead screw motor
7 secondary lead protection hammer lead screw motor
Detailed description of the invention
For embodiments of the invention will be solved technical problem, technical scheme and advantage clearly, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
Embodiments of the invention, for the radiation protection problem existed when working in existing low protection level machine room, provide a kind of sigmatron preventer, under the prerequisite not changing existing computer room structure, can meet the requirement of shelter of high energy acclerator.
Embodiments provide a kind of sigmatron preventer, comprising:
Frame, described frame is provided with the high energy acclerator in order to treat patient;
Be arranged in described frame, the high energy acclerator protection hammer that described high energy acclerator is perforated through the sigmatron of patient body can be absorbed when described high energy acclerator is treated patient; After described high energy acclerator terminates patient treatment, in frame described in described high energy acclerator protection hammer automatic retraction.
In sigmatron preventer of the present invention, in frame except the high energy acclerator be provided with in order to treat patient, be also provided with high energy acclerator protection hammer.When high energy acclerator is treated patient, high energy acclerator protection hammer can absorb the sigmatron that high energy acclerator is perforated through patient body, reduces the radiation pollution that X-ray causes to external world; After high energy acclerator terminates patient treatment, high energy acclerator protection hammer in automatic retraction frame, thus can realize under the prerequisite not changing existing computer room structure, the radiation protection problem existed when solving work in low protection level machine room.After sigmatron preventer of the present invention is installed, can the sigmatron being perforated through patient body be absorbed, thus greatly reduce the thickness of Concrete Anti revetment, reduce protection cost, reduce machine room floor space.
Particularly, described high energy acclerator can be LA45 high energy acclerator.
Further, described high energy acclerator protection hammer body can comprise:
Be positioned at the bracing frame of described frame;
Be arranged in described frame, control support frame as described above bracing frame gear motor flexible in described frame;
Be positioned at the one-level protection hammer of support frame as described above;
Be arranged on support frame as described above, control described one-level protection hammer one-level protection hammer lead screw motor flexible in support frame as described above;
Be positioned at the secondary protection hammer of described one-level protection hammer;
Be arranged on described one-level protection hammer upper, control the flexible secondary protection hammer lead screw motor of described secondary protection hammer, wherein said one-level protection hammer and described secondary protect hammer into shape to stretch out direction consistent.
Further, described frame is provided with the first stopping means of restriction support frame as described above moving range;
Support frame as described above is provided with the second stopping means of restriction described one-level protection hammer moving range;
Described one-level protection hammer is provided with the 3rd stopping means of restriction described secondary protection hammer moving range.
Further, described one-level protection hammer and described secondary protection hammer can be lead protection hammer, and support frame as described above is made for adopting metal, and particularly, support frame as described above can be steelframe.
Be LA45 high energy acclerator below with high energy acclerator be example, by reference to the accompanying drawings sigmatron preventer of the present invention described in detail:
In order under the prerequisite not changing existing computer room structure, the requirement of shelter of LA45 high energy acclerator can be met, the present embodiment is according to the standard configuration energy (10MV, 25MV, 45MV) of LA45 high energy acclerator X-ray, measurements and calculations are carried out to relevant parameter, requirement of shelter is met by installing high energy acclerator protection hammer in LA45 high energy acclerator frame additional, because the absorption efficiency of lead to X-ray is relatively good, generally, the main part of high energy acclerator protection hammer adopts lead to make.
LA45 high energy acclerator X-ray standard configuration energy is 10MV, 25MV and 45MV, and ten times of three kinds of Energy X-ray are weakened thickness as shown in Table 1:
Ten times, table one weakens thickness
Suppose that former machine room primary protective barriers employing thickness is the concrete of 1 meter,
When LA45 high energy acclerator X-ray standard configuration energy is 45MV, 1 meter of concrete is equivalent to plumbous N
1/10number is (weakening THICKNESS CALCULATION to balance): N
1/10,45MV=100 ÷ 55.5=1.80;
When LA45 high energy acclerator X-ray standard configuration energy is 25MV, 1 meter of concrete is equivalent to plumbous N
1/10number is (weakening THICKNESS CALCULATION to balance): N
1/10,25MV=100 ÷ 49.1=2.04;
When LA45 high energy acclerator X-ray standard configuration energy is 10MV, 1 meter of concrete is equivalent to plumbous N
1/10number is (weakening THICKNESS CALCULATION to balance): N
1/10,10MV=100 ÷ 39.6=2.53.
When LA45 high energy acclerator X-ray standard configuration energy is 45MV: Δ N
1/10,45MV=5.10-1.80=3.30, then protecting through thickness is that X-ray after the concrete primary protective barriers of 1 meter also needs plumbous thickness to be: L
pt, 45MV=47.6+(3.30-1) × 47.0=155.5mm;
When LA45 high energy acclerator X-ray standard configuration energy is 25MV: Δ N
1/10,25MV=5.10-2.04=3.06, then protecting through thickness is that X-ray after the concrete primary protective barriers of 1 meter also needs plumbous thickness to be: L
pt, 25MV=52.1+(3.06-1) × 51.0=157.2mm;
When LA45 high energy acclerator X-ray standard configuration energy is 10MV: Δ N
1/10,10MV=5.10-2.56=2.57, then protecting through thickness is that X-ray after the concrete primary protective barriers of 1 meter also needs plumbous thickness to be: L
pt, 10MV=52.9+(2.57-1) × 51.5=104.2mm;
L as seen from the above
pt, 25MV> L
pt, 45MV> L
pt, 10MV;
Therefore when former machine room primary protective barriers adopts thickness to be the concrete of 1 meter, the thickness L of high energy acclerator protection hammer
pt, 25MVat least 157.2mm should be reached.
Different concrete walls thick required protection hammer thickness is calculated as shown in Table 2 by said method, actual in making high energy acclerator protection hammer, get the body thickness of the maximum (having the numeral of underscore) in various situation as high energy acclerator protection hammer.
Thick required protection hammer thickness (unit: mm) of the different concrete walls of table two
After the thickness having designed high energy acclerator protection hammer, need to design the protective position of high energy acclerator protection hammer:
Because collimator can rotate within the scope of 360 degree, in clinical practice use procedure, collimator may be in arbitrarily angled, therefore the circle that it is diameter in the projected length of this protective position that the protective range of high energy acclerator protection hammer should be more than or equal to maximum launched field diagonal in center such as high energy acclerator frame rotations, prevention direction during high energy acclerator protection Chui Judeng center different distance calculates as shown in Table 3.
Different distance place, Biao Sanjudeng center prevention direction (unit: cm)
In addition according to Clinical practice requirement, the width of high energy acclerator protection hammer is maximum no more than 90cm, and high energy acclerator protection hammer upper surface is at least greater than apart from isocentric distance and equals 50cm.
In sum, maximum open is of a size of to the launched field of 40cm, does not have suitable dimension that high energy acclerator protection hammer is installed.And maximum open is of a size of to the launched field of 30cm, as shown in Table 3, in radial direction, the fitting limit of high energy acclerator protection hammer is 50 ~ 110cm, namely the disembark distance of frame center of rotation of high energy acclerator protection hammer upper surface should be more than or equal to 50cm, and the disembark distance of frame center of rotation of high energy acclerator protection hammer lower surface is then less than 110cm(and prevents from colliding with ground).For obtaining maximum treatment space, ensure that the treatment under various maximum conditions is carried out safely, high energy acclerator protection hammer should can install away from centers such as high energy acclerator frame rotations in fitting limit as far as possible.
As depicted in figs. 1 and 2, the high energy acclerator protection hammer body of the present embodiment comprises:
Be positioned at the steelframe 1 of frame;
Be arranged in frame, control steelframe 1 steelframe gear motor 5 flexible in frame;
Be positioned at the one-level lead protection hammer 2 of steelframe 1;
Be arranged on steelframe 1, control one-level lead protection hammer 2 one-level lead protection hammer lead screw motor 6 flexible in steelframe 1;
Be positioned at the secondary lead protection hammer 3 of one-level lead protection hammer 2;
Be arranged on one-level lead protection hammer 2, control the flexible secondary lead protections hammer lead screw motor 7 of secondary lead protection hammer 3, wherein one-level lead protection hammer 2 and secondary lead protection hammer into shape 3 to stretch out direction consistent.
Patient carried out before radiotherapy goes out bundle at LA45 high energy acclerator, steelframe gear motor 5, one-level lead protection hammer lead screw motor 6, secondary lead protection hammer lead screw motor 7 synchronization action, by gear and the transmission of screw mandrel forward by steelframe 1, one-level lead protection hammer 2 and secondary lead protection hammer 3 stretch out with drawer type motion mode, arrive the rear stop motion of stopping means 4 respectively and locking (as shown in Figure 2), high energy acclerator protection hammer is in operating position, LA45 high energy acclerator starts beam treatment, over the course for the treatment of, one-level lead protection hammer 2 and secondary lead protection hammer 3 can absorb the sigmatron that LA45 high energy acclerator is perforated through patient body, reduce the radiation pollution that X-ray causes to external world.After treatment is finished, steelframe gear motor 5, one-level lead protection hammer lead screw motor 6, secondary lead protection hammer lead screw motor 7 synchronization action, be retracted into position of readiness (as shown in Figure 1) by steelframe 1, one-level lead protection hammer 2 and secondary lead protection hammer 3 with drawer type motion mode by gear and screw mandrel reverse drive.
For ensureing that high energy acclerator protection hammer does not affect the rotation of patient treatment couch when stretching out, the nose angle design of high energy acclerator protection hammer is in fillet, be specifically as follows the fillet that radius is 20cm, as shown in Figure 3, wherein O is patient treatment couch center of rotation, the movement locus of radius to be the arc of 60cm be therapeutic bed pedestal nearly high speed accelerator side end face; Radius is the broken circle of 45cm is radiation protection scope, can find out that high energy acclerator protection hammer is 5.35cm from patient treatment couch movement locus the most nearby.
The present embodiment makes generic linear accelerator machine room reach requirement of shelter to sigmatron (45MV) by installing high energy acclerator protection hammer bottom LA45 high energy acclerator frame additional, after this drawer type high energy acclerator protection hammer is installed, the sigmatron being perforated through patient body can be absorbed, thus greatly reduce concrete protection wall thickness, reduce protection cost, reduce machine room floor space.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (11)
1. a sigmatron preventer, is characterized in that, comprising:
Frame, described frame is provided with the high energy acclerator in order to treat patient;
Be arranged in described frame, the high energy acclerator protection hammer that described high energy acclerator is perforated through the sigmatron of patient body can be absorbed when described high energy acclerator is treated patient; After described high energy acclerator terminates patient treatment, in frame described in described high energy acclerator protection hammer automatic retraction.
2. sigmatron preventer according to claim 1, is characterized in that, described high energy acclerator is LA45 high energy acclerator.
3. sigmatron preventer according to claim 1, is characterized in that, described high energy acclerator protection hammer comprises:
Be positioned at the bracing frame of described frame;
Be arranged in described frame, control support frame as described above bracing frame gear motor flexible in described frame;
Be positioned at the one-level protection hammer of support frame as described above;
Be arranged on support frame as described above, control described one-level protection hammer one-level protection hammer lead screw motor flexible in support frame as described above;
Be positioned at the secondary protection hammer of described one-level protection hammer;
Be arranged on described one-level protection hammer upper, control the flexible secondary protection hammer lead screw motor of described secondary protection hammer, wherein said one-level protection hammer and described secondary protect hammer into shape to stretch out direction consistent.
4. sigmatron preventer according to claim 3, is characterized in that,
Described frame is provided with the first stopping means of restriction support frame as described above moving range;
Support frame as described above is provided with the second stopping means of restriction described one-level protection hammer moving range;
Described one-level protection hammer is provided with the 3rd stopping means of restriction described secondary protection hammer moving range.
5. sigmatron preventer according to claim 3, is characterized in that, described one-level protection hammer and described secondary protection hammer are lead protection hammer.
6. sigmatron preventer according to claim 3, is characterized in that, support frame as described above is made for adopting metal.
7. the sigmatron preventer according to any one of claim 1-3, is characterized in that, the protective range of described high energy acclerator protection hammer be more than or equal to etc. the maximum launched field diagonal in the center circle that is diameter in the projected length of protective position.
8. the sigmatron preventer according to any one of claim 1-3, is characterized in that, the width of described high energy acclerator protection hammer is no more than 90cm.
9. the sigmatron preventer according to any one of claim 1-3, is characterized in that, described high energy acclerator protection hammer upper surface and isocentric distance are more than or equal to 50cm.
10. the sigmatron preventer according to any one of claim 1-3, is characterized in that, described high energy acclerator protection hammer is not less than 5.35cm with the distance of patient treatment couch.
11. sigmatron preventers according to any one of claim 1-3, is characterized in that, the nose angle of described high energy acclerator protection hammer is fillet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310681705.XA CN104707259A (en) | 2013-12-12 | 2013-12-12 | High-energy X-ray protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310681705.XA CN104707259A (en) | 2013-12-12 | 2013-12-12 | High-energy X-ray protection device |
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| CN104707259A true CN104707259A (en) | 2015-06-17 |
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ID=53407297
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| CN201310681705.XA Pending CN104707259A (en) | 2013-12-12 | 2013-12-12 | High-energy X-ray protection device |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040013233A1 (en) * | 2001-01-29 | 2004-01-22 | Hironari Yamada | High-energy x-ray imaging device and method therefor |
| CN101496727A (en) * | 2009-03-05 | 2009-08-05 | 王昕� | Radiation protection device for medical radiodiagnosis and therapy |
| CN203647880U (en) * | 2013-12-12 | 2014-06-18 | 北京大基康明医疗设备有限公司 | High-energy X-ray protection device |
-
2013
- 2013-12-12 CN CN201310681705.XA patent/CN104707259A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040013233A1 (en) * | 2001-01-29 | 2004-01-22 | Hironari Yamada | High-energy x-ray imaging device and method therefor |
| CN101496727A (en) * | 2009-03-05 | 2009-08-05 | 王昕� | Radiation protection device for medical radiodiagnosis and therapy |
| CN203647880U (en) * | 2013-12-12 | 2014-06-18 | 北京大基康明医疗设备有限公司 | High-energy X-ray protection device |
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Application publication date: 20150617 |
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