CN2932411Y - A 3D oriented radiotherapeutical system dosage measuring water tank - Google Patents
A 3D oriented radiotherapeutical system dosage measuring water tank Download PDFInfo
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- CN2932411Y CN2932411Y CN 200620054436 CN200620054436U CN2932411Y CN 2932411 Y CN2932411 Y CN 2932411Y CN 200620054436 CN200620054436 CN 200620054436 CN 200620054436 U CN200620054436 U CN 200620054436U CN 2932411 Y CN2932411 Y CN 2932411Y
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Abstract
A dosage measuring water tank for a stereospecific radiation therapy system adds an auxiliary water tank on the outside of the main water tank of the former fixing ionization chamber, like a rectangular water tank is spaced by a baffle plate or an inside and outside two-layer structure of main inside and auxiliary outside, the main water tank and the auxiliary water tank are communicated with each other by water pumps and a connecting pipe, wherein the water pumps comprise a main diving pump and an auxiliary diving pump arranged in the main water tank and the auxiliary water tank separately, the connecting pipe strides the upper portion of the baffle plate. The measuring doesn't need the repeated adding and reducing water by manual replaced by the water pump, thereby can reduce labor intensity greatly, when measuring, the rise-fall of water surface is smooth and steady without fluctuation, avoiding the waiting time, thereby can improve the accuracy of water surface reading and measuring efficiency greatly, water can realize floating in the water tank, thereby cannot damage the accelerating circuit and hardware, improving the safety in measuring greatly. The utility model realizes the main function of dear foreign dosage measuring water tank with million-Yuan by applying simple allocation, fully utilizes the function of precise positioning of other radiotherapy equipments, greatly reduces the cost, thereby is in favor of extending and using the dosage measuring water tank, guaranteeing the effect of tumour radiation therapy.
Description
Technical field
The utility model relates to used dosage measurement water tank in a kind of three-dimensional directional radiotherapy eutical system (X cutter), and it is mainly used in measurement and the analysis and the correction of dosage, ensures that patient obtains proper dosage, thereby obtains excellent curative.
Background technology
Nineteen fifty-one Sweden Leksell initiative stereotaxic radiosurgery is learned (SRS); it is based on stereotactic frame, collimating apparatus and radioactive source; down auxiliary at images such as CT, MRI and DSA; can treat various organic diseases and functional illness in encephalic and the body accurately and effectively; the SRS technical characterstic is that high dose is concentrated the target area when irradiation; the target external dose successively decreases very precipitous, has the feature of cutter, so the outer normal structure of target and critical organ are protected.This is progress great on the twentieth century medical history, and its outstanding representative is exactly the X cutter.
The X cutter is the sigmatron that utilizes linear accelerator to produce, and by the rotation of accelerator frame, the angle of the secondary of irradiation field collimation and therapeutic bed changes the heavy dose of non-coplane multi sphere of realizing the tumour target area and focuses on irradiation.Because target center the center such as accurately is positioned at securely by stereotaxis equipment, so in fact in whole irradiation process, beam is to aim at target center all the time, make target center accept the high dose X ray, X line radiological dose around making in the target area simultaneously is the distribution of falling sharply property, thereby obtains and the similar ideal treatment of surgical knife excision focus.Promptly give enough radiological doses, make tumour cell be subjected to maximum killing and wounding, suppress its development, to reach the healing purpose to tumour.Make simultaneously the normal structure of tumour periphery accept the least possible radioactive dosage again, to reduce complication.
From the mutual relationship synoptic diagram (Fig. 1) of the optimal dose of oncotherapy and normal tissue injury as can be known, accurately measuring radiological dose in radiation therapy is one of basic assurance of curing tumor focus.Thereby be used to measure that the equipment of stereotaxic radiosurgery therapy system (X cutter) radiological dose---the quality quality of dosage test water tank and the convenience of using just seem very important.
The 3 d water tank scanning system is to be used for the equipment that linear accelerator quantitative measurment anthropomorphic phantom type roentgen dose X distributes, automatically continuous sweep radiation absorber.It is very suitable and accurately to be used to measure stereotaxic radiosurgery therapy system (X cutter) and also to be.But the main dependence on import of 3 d water tank scanning system costs an arm and a leg.
Present domestic various big hospital is according to the clinical practice application need, adopts simple in structure but can realize the dosage measurement water tank with low cost of major function, claims standard water tank or standard water mould again, and its structure as shown in Figure 2.
Owing in actual measurement, will measure, the height of the water surface on the dosage detection probe (ionization chamber) is constantly changed at the absorbing agent radiotherapy dosage at the secondary cylinder collimating apparatus certain depth place (0-20cm) of each specification.The standard waterbox design Draw off valve (water swivel), discharge water to bucket by the control water swivel, realize the minimizing of water depth.The increase of water depth if desired just adopts water tumbler to bail to water tank from bucket.
In actual measurement, this mode of operation has the following disadvantages:
1) efficient is extremely low, and intensity of workers is big;
2) water surface control out of true causes water level fluctuation because bail to water tank, thereby disturbs the reading of water surface elevation when the not enough height of the water surface, will wait several minutes water surface ability static at every turn, has greatly increased Measuring Time;
3) in measurement, easily water is sprinkled to accelerator in the process adding water and discharge water, circuit and machine are had unsafe hidden danger.
The utility model content
The purpose of this utility model, just provide a kind of in measurement water move inner realization of water tank, need not be again by manually adding diminishing repeatedly, and the rise and fall of the water surface are steady in measuring, and can realize major function, dosage measurement water tank with low cost.
For achieving the above object, dosage measurement water tank of the present utility model comprises it is characterized in that the main water box of original installation ionization chamber: set up auxiliary water tank, both are communicated with by water pump and connecting pipe.
On the basis of the above, the utility model also can have following modification:
Described main water box and auxiliary water tank are with the dividing plate interval in the middle of the rectangular tank.
Described main water box and auxiliary water tank are inside and outside double-layer structure, and internal layer is a main water box, and skin is an auxiliary water tank.
Described water pump has main submersible pump and auxiliary submersible pump, is contained in main and auxiliary helping in the water tank respectively; Described connecting pipe strides across or pierces into from two water tank sidewalls from the dividing plate top, the water delivering orifice of tap master's submersible pump and auxiliary submersible pump.
Described water pump is a two way water pump, be contained in connecting pipe in the middle of.
The beneficial effect that this is novel:
(1) need not be again in measuring by manually adding diminishing repeatedly, and replace in water pump, reduced labour intensity widely.
(2) rise and fall of the water surface are steady in the measurement, do not have the water level fluctuation that produces when manually adding water, avoided the time of waiting for, improved the precision of water surface reading, also improved efficiency of measurement widely.
(3) water moves inner realization of water tank, can not damage accelerator circuit and hardware, has greatly improved the security in measuring.
(4) realized the major function of dosage measurement water tank of the costliness of external 1,000,000 yuan of levels with simple configuration, it has made full use of the pinpoint function of other radiotherapy apparatus, greatly reduce cost, and then helped promoting the use of of dosage measurement water tank, guaranteed the effect of tumour radiotherapy.
Description of drawings
Fig. 1 is the cross-sectional schematic (along the A-A line of Fig. 2) of embodiment 1 structure.
Fig. 2 is the schematic top plan view of Fig. 1.
Fig. 3 looks synoptic diagram for the left side of Fig. 1.
Fig. 4 is the cross-sectional schematic (along the B-B line of Fig. 5) of the utility model embodiment 2 structures.
Fig. 5 is the schematic top plan view of Fig. 4.
Fig. 6 looks synoptic diagram for the left side of Fig. 4.
Fig. 7 is the schematic top plan view of embodiment 3 structures.
Fig. 8 is the cross-sectional schematic of embodiment 4 structures.
Fig. 9 is the schematic top plan view of embodiment 5 structures.
Among the figure: 1 main water box, 2 horizontal adjustment knob, 3 bottom cross curve, 4 main submersible pumps, 5 auxiliary submersible pumps, 6 auxiliary water tanks, 7 connecting pipes, 8 ionization chamber waterproof sheaths, 9 highly indicate groove, 10 two way water pumps, 11 dividing plates.
Embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail.
As shown in Figure 1 to Figure 3, used dosage measurement water tank in the three-dimensional directional radiotherapy eutical system (X cutter) of the utility model embodiment 1 (novel water tank I type), in the middle of a rectangular tank, be partitioned into main water box 1 and auxiliary water tank 6 with dividing plate 11, horizontal adjustment knob 2 is housed under the rectangular tank, main water box 1 is mounted to ionization chamber, is used to measure absorbed dose, dress ionization chamber waterproof sheath 8 in it, be carved with bottom cross curve 3 on the bottom surface, be carved with on sidewall and the dividing plate and highly indicate groove 9; Auxiliary water tank 6 is used to main water box to provide and stores water; Main water box and auxiliary water tank are communicated with by water pump and connecting pipe 7, realize the water level control of main water box.Described water pump is divided into main submersible pump 4 and auxiliary submersible pump 5, is contained in main and auxiliary helping in the water tank respectively; 7 water delivering orifices that stride across tap master submersible pump 4 and auxiliary submersible pump 5 from dividing plate 11 tops of connecting pipe.Guarantee main submersible pump 4 and assist submersible pump 5 not work simultaneously that from circuit its water outlet goes out by the water inlet of auxiliary submersible pump 5 when main submersible pump 4 draws water, otherwise the same.
Fig. 4 is that with example 1 difference main water box 1 and auxiliary water tank 6 are inside and outside double-layer structure to the utility model embodiment 2 (novel water tank II type) shown in Figure 6, and internal layer is a main water box, and skin is an auxiliary water tank.
Embodiment 3 shown in Figure 7 is that described connecting pipe 7 pierces into from two water tank sidewalls, the water delivering orifice of tap master's submersible pump and auxiliary submersible pump with example 1 difference.
Fig. 8, embodiment 4, embodiment 5 shown in Figure 9, described water pump two way water pump, be contained in connecting pipe in the middle of, described connecting pipe two-port strides across or pierces into from two water tank sidewalls from the dividing plate top respectively.
This " divide one be two or big-and-middle have little " design improved the convenience of using effectively, make it can be applied to clinical practice better.
This novel water tank can be advantageously used in the conventional sense of radiotherapy machine output quantity.
Because the horizontal adjustment knob has been installed in the water tank bottom, can in 0～10mm scope, adjust,, water tank is in horizontality when measuring with assurance.Ionization chamber waterproof sheath easy accessibility both had been applicable to the measurement of ionization chamber method, was applicable to the measurement of thermoluminescence method again.
According to the clinical practice application need, simplify its equipment but can realize the dosage measurement water tank with low cost of main function, compared with the version before its improvement of novelty has been arranged, it is more convenient and practical to make it use.
Thus, this novel water tank is particularly suitable for domestic middle and small hospital and uses in dosage measurement, realizes the major function of the equipment of external 1,000,000 grades of prices having good economic and social benefit with very low expenditure.
Making for embodiment requires to have:
1) material of determining the dosage measurement water tank is a poly (methyl methacrylate) plate.Its size, shape, thickness is even, gets 1cm thickness.
2) water tank bottom has the horizontal adjustment knob for four jiaos, and the horizontal adjustment knob adopts light metal aluminium.The bottom surface is carved with 100mm * 100mm launched field and is overlapped cross frame line.
3) strong adhesive of selected poly (methyl methacrylate) plate makes water tank energy robust sealed, and is durable in use.It is 0～200mm that water tank symmetry two walls are carved with apart from the ionization chamber centre-height, at interval the depth of water scale mark of 10mm.
4) ionization chamber waterproof sheath is to be made by perspex bar, and the ionization chamber jack cooperates with ionization chamber, and the waterproof sheath can be dismantled, can be in water Molded Depth 100mm place horizontal positioned.Must clog with alternative plug after the dismounting.
5) suction pump that selected model is suitable and the water-supply-pipe supporting with it, this point is extremely important, and it is directly connected to the flow velocity of water, and the control of water surface elevation affects the net result of dosage measurement.
6) according to dosage measure the global design scheme of water tank, install and fix submersible pump, and connect water pipe.Installation connects the water pump control circuit.
Radiation therapy is one of main means for the treatment of at present malignant tumour.According to statistics, there is the malignant tumor patient more than 70% need use radiation therapy at home approximately.In order to guarantee and to improve curative effect, reduce normal structure complication in the treatment, by physical method, very accurately determine the therapeutic dose in the zone, for the clinical reliable basis that provides, have considerable meaning.The present utility model person proposes the method with geometry and physics, and absorbed dose canonical measure water tank in the radiation therapy is done unique improvement, is intended to utilize better limited measuring equipment and condition, realizes the mensuration accurately and fast of therapeutic dose easily.
Novel water tank I structural parameters of the present invention:
Main water box measurement range: 300 * 300 * 300mm3.
Auxiliary water tank measurement range: 300 * 300 * 300mm3.
Wall thickness/material: 10mm/ acrylic acid (organic glass).
Submersible pump rated voltage: 220-255V, frequency: 50HZ, rated power: 7.5-8.5W.
Flow: 6 liters/minute, lift: 0.5M.
Submersible pump size: 35 * 35 * 30mm3.
Its workflow is:
1) radiotherapy equipment (linear accelerator, X cutter equipment, first secondary cylinder collimating apparatus) debugging is installed after, this water tank is lain in a horizontal plane on the treatment bed board, after utilizing the main water box bottom to regulate knob regulating tank level, adjust central plane and the coincidences of main water box 0 scale mark such as bed height makes under the indication of accelerator laser lamp, head launched field cross curve and main water box bottom cross curve overlap.
2) with ready water (consistent) with accelerator chamber temperature to main water box, highly maximum can be inserted the standard chamber in the water tank waterproof sheath (being inserted to the end) to 20cm, this moment, the ionization chamber center probe just was positioned at cross center (horizontal level).At this moment just can measure the absorbed dose under this degree of depth.
3) behind the survey measurements, open the submersible pump A of main water box, the water of main water box is evacuated to auxiliary water tank, when the water surface for the treatment of main water box is reduced to next scale (such as 15cm), close submersible pump A.If closed evening, the water surface low 15cm, can open the submersible pump B of auxiliary water tank, the water of auxiliary water tank is drawn back main water box, close submersible pump B after making the water surface be elevated to assigned scale.At this moment just can measure the absorbed dose under second degree of depth.
4) in like manner, the water surface with main water box is adjusted to assigned scale (generally being 20cm, 15cm, 12cm, 10cm, 9cm, 8cm, 7cm, 6cm, 5cm, 4cm, 3cm, 2cm, 1.5cm, 1cm) successively, is 0.5cm at last, reads dose data successively.
5) change second X cutter secondary cylinder collimating apparatus, at this moment water surface elevation is constant, measure the dosage under the 0.5cm degree of depth earlier, open the submersible pump B of outer auxiliary tank then, add water to main water box successively, the water surface of main water box progressively is elevated to (1cm, 1.5cm, 2cm, 3cm, 4cm, 5cm, 6cm, 7cm, 8cm, 9cm, 10cm, 12cm, 15cm, 20cm) measuring height.Finish the measurement of each degree of depth of second collimating apparatus successively.
6) in like manner, finish the measurement of all X cutter secondary cylinder collimating apparatuss.
Novel water tank II structural parameters of the present invention:
Water tank measurement range: 300 * 300 * 300mm3.
Little case inside dimension: 300 * 300 * 300mm3.
Little case external dimensions: 320 * 320 * 300mm3.
Big case inside dimension: 500 * 500 * 300mm3.
Big case external dimensions: 520 * 520 * 300mm3.
Little water tank is similar to volume: 27 liters.
Large water tank is similar to volume: 70 liters.
Wall thickness/material: 10mm/ acrylic acid (organic glass).
Submersible pump rated voltage: 220-255V, frequency: 50HZ, rated power: 7.5-8.5W.
Flow: 6 liters/minute, lift: 0.5M.
Submersible pump size: 35 * 35 * 30mm3.
Its workflow is:
1) after radiotherapy equipment (linear accelerator, X cutter equipment, first secondary cylinder collimating apparatus) debugging installs, this water tank is lain in a horizontal plane on the treatment bed board, after utilizing water tank bottom to regulate knob regulating tank level, adjust central plane and the coincidences of water tank 0 scale mark such as bed height makes under the indication of accelerator laser lamp, head launched field cross curve and water tank bottom cross curve overlap.
2) with ready water to the little water tank, highly maximum can be inserted the standard chamber in the water tank waterproof sheath (being inserted to the end) to 20cm, this moment, the ionization chamber center probe just was positioned at the cross center.At this moment just can measure the absorbed dose under this degree of depth.
3) behind the survey measurements, open the submersible pump A of inner water tank, the water of little water tank is evacuated to large water tank, when waiting to arrive next scale (such as 15cm), close submersible pump A.If close the late water surface low 15cm, can open the submersible pump B of outer water tank, the water of large water tank is evacuated to little water tank, close submersible pump B after making the water surface be elevated to assigned scale.At this moment just can measure the absorbed dose under second degree of depth.
4) in like manner, successively the water surface is adjusted to assigned scale (generally being 20cm, 15cm, 12cm, 10cm, 9cm, 8cm, 7cm, 6cm, 5cm, 4cm, 3cm, 2cm, 1.5cm, 1cm, 0.5cm), reads dose data successively.
5) change second X cutter secondary cylinder collimating apparatus, at this moment measure the dosage under the 0.5cm degree of depth earlier, open the submersible pump B of outer water tank then, add water to little water tank successively, make the water surface progressively be elevated to above measuring height.Finish the measurement of each degree of depth of second collimating apparatus successively.
6) in like manner, finish the measurement of all X cutter secondary cylinder collimating apparatuss.
Claims (8)
1, a kind of three-dimensional directional radiotherapy eutical system dosage measurement water tank comprises it is characterized in that the main water box (1) of former installation ionization chamber: set up auxiliary water tank (6), both are communicated with by water pump and connecting pipe (7).
2, three-dimensional directional radiotherapy eutical system dosage measurement water tank according to claim 1 is characterized in that: described main water box (1) and auxiliary water tank (6) are to be partitioned into dividing plate (11) in the middle of the rectangular tank.
3, three-dimensional directional radiotherapy eutical system dosage measurement water tank according to claim 1 is characterized in that: described main water box (1) and auxiliary water tank (6) are inside and outside double-layer structure, and internal layer is main water box (1), and skin is auxiliary water tank (6).
4, according to any described three-dimensional directional radiotherapy eutical system dosage measurement water tank in the claim 1 to 3, it is characterized in that: described water pump has main submersible pump (4) and auxiliary submersible pump (5), is contained in main and auxiliary helping in the water tank (6) respectively; Described connecting pipe (7) strides across from dividing plate (11) top, the water delivering orifice of tap master's submersible pump (4) and auxiliary submersible pump (5).
5, according to any described three-dimensional directional radiotherapy eutical system dosage measurement water tank in the claim 1 to 3, it is characterized in that: described water pump has main submersible pump (4) and auxiliary submersible pump (5), is contained in main and auxiliary helping in the water tank (6) respectively; Described connecting pipe (7) pierces into from two water tank sidewalls, the water delivering orifice of tap master's submersible pump (4) and auxiliary submersible pump (5).
6, according to any described three-dimensional directional radiotherapy eutical system dosage measurement water tank in the claim 1 to 3, it is characterized in that: described water pump is two way water pump (10), be contained in connecting pipe (7) in the middle of.
7, three-dimensional directional radiotherapy eutical system dosage measurement water tank according to claim 6 is characterized in that: described connecting pipe (7) strides across from dividing plate (11) top.
8, three-dimensional directional radiotherapy eutical system dosage measurement water tank according to claim 6, it is characterized in that: described connecting pipe (7) pierces into from two water tank sidewalls.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200620054436 CN2932411Y (en) | 2006-01-25 | 2006-01-25 | A 3D oriented radiotherapeutical system dosage measuring water tank |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200620054436 CN2932411Y (en) | 2006-01-25 | 2006-01-25 | A 3D oriented radiotherapeutical system dosage measuring water tank |
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| CN2932411Y true CN2932411Y (en) | 2007-08-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104870054A (en) * | 2012-12-26 | 2015-08-26 | 三菱电机株式会社 | Dose distribution measurement device |
| CN105465299A (en) * | 2014-08-14 | 2016-04-06 | 上海联影医疗科技有限公司 | Radiation dose measurement water tank and transmission device thereof |
| CN108020856A (en) * | 2016-10-31 | 2018-05-11 | 伊利克塔股份有限公司 | Dose Distribution in Radiotherapy Treatment measures |
-
2006
- 2006-01-25 CN CN 200620054436 patent/CN2932411Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104870054A (en) * | 2012-12-26 | 2015-08-26 | 三菱电机株式会社 | Dose distribution measurement device |
| CN104870054B (en) * | 2012-12-26 | 2017-06-23 | 三菱电机株式会社 | Dosage distribution measurement device |
| CN105465299A (en) * | 2014-08-14 | 2016-04-06 | 上海联影医疗科技有限公司 | Radiation dose measurement water tank and transmission device thereof |
| CN105465299B (en) * | 2014-08-14 | 2019-01-15 | 上海联影医疗科技有限公司 | Measuring water tank for radiation dosage and its transmission device |
| CN108020856A (en) * | 2016-10-31 | 2018-05-11 | 伊利克塔股份有限公司 | Dose Distribution in Radiotherapy Treatment measures |
| CN108020856B (en) * | 2016-10-31 | 2023-06-09 | 伊利克塔股份有限公司 | Radiation therapy dose distribution measurement |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070808 Termination date: 20100225 |