CN203634661U - Light limiting device for radiotherapy apparatus and radiotherapy apparatus - Google Patents
Light limiting device for radiotherapy apparatus and radiotherapy apparatus Download PDFInfo
- Publication number
- CN203634661U CN203634661U CN201320448826.5U CN201320448826U CN203634661U CN 203634661 U CN203634661 U CN 203634661U CN 201320448826 U CN201320448826 U CN 201320448826U CN 203634661 U CN203634661 U CN 203634661U
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- calimator
- light limiting
- limiting cylinder
- radiotherapy unit
- optical device
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Abstract
The utility model discloses a light limiting device for a radiotherapy apparatus a radiotherapy apparatus. Since tapered through holes on a light limiting cylinder play a role in adjustment, the diverging region of a ray is greatly shortened, the penumbra region is greatly reduced at the same time, and the penumbra region is shortened to less than +/- 1 mm. The adjusting effect of the tapered through holes on the light limiting cylinder can make accurately positioning treatment, and provides conditions for less fractionated treatment and large dose treatment. In addition, the height of the light limiting cylinder is reduced to 1.5 cm-4 cm, the size and the weight of the light limiting cylinder are greatly reduced, and the light limiting cylinder is convenient to replace. At the same time, the light limiting cylinder is coordinated with a blade collimator together for use. Rays penetrating the blade collimator and the light limiting cylinder are attenuated to be within the safe scope by utilizing the stacking of the blade thickness of the blade collimator with the light limiting cylinder thickness. Thus, the blade collimator is continuously fixed on the apparatus, usage efficiency of the equipment is greatly improved, and medical cost and patient burden are reduced.
Description
Technical field
This utility model relates to a kind of armarium, limit electro-optical device and the radiotherapy unit for a kind of radiotherapy unit that are particularly used in conjunction with accelerator therapy instrument.
Background technology
In the time that tumor (target area) is carried out to radiotherapy, need to give the accurate location of tumor.In 3d space, doctor or physics Shi Shouxian, at CT Room scanning patient's CT image, become 3-D view by algorithm by a series of CT image reconstructions, now, can locate the three-dimensional coordinate of tumor in three-dimensional image.Then doctor or physics teacher are placed into accelerator room by patient and reset, by center (isocenter) inregisters such as the treatments of the three-dimensional coordinate of tumor and accelerator.Last begin treatment.Current radiotherapy equipment for the tissue that protects the health avoid infringement, the general blade collimator apparatus IMRT that uses the dark slide of customization or use capable of regulating shape of through holes, because the ray that accelerator 1 is launched is taper, as shown in Figure 1, it is through the penumbra region 3≤± 4mm of dark slide or the 2 rear formation of blade collimator apparatus, its penumbra region 3 is still larger, health risk tissue, for reducing infringement, can only take the therapeutic scheme of multiple low dose exposure, generally be greater than seven times, greatly reduce the service efficiency of equipment, reduce therapeutic effect, increase treatment cost and patient's burden.Also there is at present the calimator of use given shape (can be also circular hole) through hole to carry out the heavy dose for the treatment of of SRS, calimator penumbra region can be narrowed down to≤1mm, excellent performance, but in order to reduce the roentgendosis that penetrates calimator material, need calimator to there is certain thickness, be generally at present 8cm left and right, cause its bulking value larger, changing calibration is difficult for, waste time and energy, because the aperture of calimator is fixed, not continuously adjustable, therefore many times, not thering is suitable aperture and carry out in low dose repeatedly treats, still need to use IMRT, due to the volume weight restriction of the two, after can only saying calimator dismounting, IMRT is installed, otherwise, need to dismantle calimator, IMRT is installed, very poor efficiency is complicated to cause operation, machinery utilization rate is low, at present also not relevant solution and technology enlightenment of those skilled in the art.
Utility model content
For addressing the above problem, the purpose of this utility model is to provide limit electro-optical device and radiotherapy unit for a kind of radiotherapy unit.
For achieving the above object, the technical solution of the utility model is:
Limit electro-optical device for a kind of radiotherapy unit, described limit electro-optical device comprises calimator, support and blade collimator apparatus, described calimator comprises body, the height of described body is 1.5-4cm, described body is provided with a through hole running through from top to bottom, the cross section of described through hole is circle or multi-line section closed curve, and its envelope size increases from top to bottom gradually; Described calimator is installed on described support, and described blade collimator apparatus is arranged at described calimator top.
Preferably, be provided with the installation portion for calimator is installed on described support, described calimator is dismountable to be installed on described installation portion.
Preferably, institute's body comprises shell and is embedded in the plumbous matter layer of described inner surface of outer cover and/or outer surface, or is poured into the plumbous matter layer in described shell.
Preferably, the enveloping surface of described through hole upwards converges at a bit along longitudinal hatching line of axis.
Preferably, the height of described blade collimator apparatus is at 4-9cm.
This utility model also provides a kind of radiotherapy unit, and the below of the accelerator of described radiotherapy unit is provided with above-mentioned radiotherapy unit limit electro-optical device.
Adopt the beneficial effect of the technical program to be: due to the Accommodation of calimator conical through-hole, like the diverging region of ray greatly shrink, penumbra region greatly reduces simultaneously, can reduce to≤± 1mm of penumbra region, thereby accurately locating therapy, for few gradation, heavy dose for the treatment of provides condition, in addition the height of calimator is tapered to 1.5cm-4cm, alleviate greatly the volume and weight of calimator, can change easily, coordinate blade collimator to use together simultaneously, utilize the vane thickness of blade collimator and the stack of the thickness of calimator, make the ray attenuation that penetrates blade collimator and calimator to safe scope, therefore blade collimator can be fixed on equipment always, greatly improve the service efficiency of equipment, reduce medical treatment cost and patient's burden.
Brief description of the drawings
Fig. 1 is the schematic diagram of the penumbra region of prior art generation;
Fig. 2 is the schematic diagram of penumbra region after application this utility model;
Fig. 3 is the schematic diagram of a kind of radiotherapy unit of this utility model calimator.
Fig. 4 is the schematic diagram of this utility model a kind of radiotherapy unit calimator and radiotherapy unit embodiment 3.
Numeral and the represented corresponding component title of letter in figure:
1. accelerator 2. blade collimator apparatus 3. penumbra region 4. calimator 41. bodies 42. through hole.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, this utility model is described in further detail.
Embodiment 1,
As shown in Figures 2 and 3, a kind of calimator 4 for radiotherapy unit, comprise body 41, described body 41 is provided with a through hole running through from top to bottom 42, and the cross section of described through hole 42 is that circle (can be also multi-line section closed curve as required, as positive 8 limit shapes, positive 24 limit shapes etc., its line segment quantity can be selected arbitrarily), and its envelope size increases from top to bottom gradually, whole structure is taper (can be also other shape, as stepped tubaeform etc.).Described body can intercept with lead or metal or other metal, alloy preparation that ray penetrates.The height of body is 2cm, also can be as required, and such as the thickness that coordinates blade collimator is selected 1.5cm, 2.5cm, 3cm, 3.5cm or 4cm, or 1.5cm is to the arbitrary numerical value between 4cm.In the situation that blade collimator is existing parameter, 2cm is optimum thickness.
All the other are identical with embodiment 1, and difference is, institute's body 41 comprises shell and is embedded in the plumbous matter layer of described inner surface of outer cover and/or outer surface, or is poured into the plumbous matter layer in described shell.Such object is for the ease of processing preparation, the preparation of metals shell of other material, processing technique is simpler, outward appearance can be done more attractive in appearancely, mainly still completing by the plumbous matter layer being fixed on shell of isolation ray, if shell is made to the double Shell with hollow cavity, after lead can being melted, be poured in above-mentioned cavity, manufacturing process and cost are lower.
In above-described embodiment, the enveloping surface of described through hole upwards converges at a bit along longitudinal hatching line 21 of axis, and the position of this point is in the time being installed on radiotherapy equipment and the position consistency of decelerator emission source.
As shown in Figure 4, in order further to enhance product performance, above-mentioned calimator is arranged on a support (not shown in FIG.), described body 41 is fixedly installed on described support, described body 41 tops are also provided with blade collimator apparatus 2, described blade collimator apparatus is usually said capable of regulating grating, grating is made up of two groups of multiple blades that are oppositely arranged, by controlling the position that moves horizontally of blade, make to form between blade a through hole similar with focus shape, to improve the accuracy of roentgenization, avoid healthy tissue.Blade collimator apparatus 2 is carried out to vertical stack with calimator body 41, further properties of product are optimized, the one, irradiation area is optimized, make its shape and focus more identical, the 2nd, greatly reduce penumbra region area.
For further optimized device, on described support, be provided with the installation portion for calimator is installed, described calimator is dismountable to be installed on described installation portion.So more be convenient to change as required different calimators, improve use value and the work efficiency of equipment.
Any number of the height of described blade collimator apparatus between 4-9cm.
In the time being provided as complete equipment, this utility model also provides a kind of radiotherapy unit, and the below of the accelerator of described radiotherapy unit is provided with the described radiotherapy unit calimator in above-described embodiment.
Adopt the beneficial effect of the technical program to be: due to the Accommodation of calimator conical through-hole, like the diverging region of ray greatly shrink, penumbra region greatly reduces simultaneously, can reduce to≤± 1mm of penumbra region, thereby accurately locating therapy, for few gradation, heavy dose for the treatment of provides condition, in addition the height of calimator is tapered to 1.5cm-4cm, alleviate greatly the volume and weight of calimator, can change easily, coordinate blade collimator to use together simultaneously, utilize the vane thickness of blade collimator and the stack of the thickness of calimator, make the ray attenuation that penetrates blade collimator and calimator to safe scope, therefore blade collimator can be fixed on equipment always, therefore greatly improved the service efficiency of equipment, reduce medical treatment cost and patient's burden.
This utility model also provides a kind of radiotherapy unit, and the below of the accelerator of described radiotherapy unit is provided with above-mentioned radiotherapy unit limit electro-optical device.
Above-described is only preferred implementation of the present utility model; it should be pointed out that for the person of ordinary skill of the art, do not departing under the prerequisite of this utility model creation design; can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (6)
1. a limit electro-optical device for radiotherapy unit, it is characterized in that, described limit electro-optical device comprises calimator, support and blade collimator apparatus, described calimator comprises body, the height of described body is 1.5cm-4cm, described body is provided with a through hole running through from top to bottom, and the cross section of described through hole is circle or multi-line section closed curve, and its envelope size increases from top to bottom gradually; Described calimator is installed on described support, and described blade collimator apparatus is arranged at described calimator top.
2. limit electro-optical device for radiotherapy unit according to claim 1, is characterized in that, on described support, be provided with the installation portion for calimator is installed, described calimator is dismountable to be installed on described installation portion.
3. limit electro-optical device for radiotherapy unit according to claim 2, is characterized in that, institute's body comprises shell and is embedded in the plumbous matter layer of described inner surface of outer cover and/or outer surface, or is poured into the plumbous matter layer in described shell.
4. limit electro-optical device for radiotherapy unit according to claim 2, is characterized in that, the enveloping surface of described through hole upwards converges at a bit along longitudinal hatching line of axis.
5. according to limit electro-optical device for the radiotherapy unit described in claim 4, it is characterized in that, the height of described blade collimator apparatus is at 4-9cm.
6. a radiotherapy unit, is characterized in that, the below of the accelerator of described radiotherapy unit is provided with the arbitrary described radiotherapy unit of claim 1 to 5 limit electro-optical device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320448826.5U CN203634661U (en) | 2013-07-26 | 2013-07-26 | Light limiting device for radiotherapy apparatus and radiotherapy apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320448826.5U CN203634661U (en) | 2013-07-26 | 2013-07-26 | Light limiting device for radiotherapy apparatus and radiotherapy apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203634661U true CN203634661U (en) | 2014-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320448826.5U Expired - Lifetime CN203634661U (en) | 2013-07-26 | 2013-07-26 | Light limiting device for radiotherapy apparatus and radiotherapy apparatus |
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| Country | Link |
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| CN (1) | CN203634661U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104338241A (en) * | 2013-07-26 | 2015-02-11 | 苏州雷泰医疗科技有限公司 | Light limiting device for radiotherapy device and radiotherapy device |
-
2013
- 2013-07-26 CN CN201320448826.5U patent/CN203634661U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104338241A (en) * | 2013-07-26 | 2015-02-11 | 苏州雷泰医疗科技有限公司 | Light limiting device for radiotherapy device and radiotherapy device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140611 |