CN102019042A - Distortion compensation method and system for gamma-ray treatment bed - Google Patents
Distortion compensation method and system for gamma-ray treatment bed Download PDFInfo
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- CN102019042A CN102019042A CN2010105612542A CN201010561254A CN102019042A CN 102019042 A CN102019042 A CN 102019042A CN 2010105612542 A CN2010105612542 A CN 2010105612542A CN 201010561254 A CN201010561254 A CN 201010561254A CN 102019042 A CN102019042 A CN 102019042A
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- gamma
- therapeutic bed
- distortion
- ray therapeutic
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Abstract
The invention relates to a distortion compensation method and system for a gamma-ray treatment bed, wherein the distortion compensation method for the gamma-ray treatment bed comprises the following steps: setting a reference value: setting the reference value for the reference position of the gamma-ray treatment bed; getting compensation dosage: getting a measured value of the position of the gamma-ray treatment bed after distortion, and getting the compensation dosage of the gamma-ray treatment table bed after the distortion according to the measured value of the position of the gamma-ray treatment bed after the distortion and the reference value for the reference position of the gamma-ray treatment bed; and compensating: substituting the compensation dosage into a compensation formula for compensating the distortion of the gamma-ray treatment bed. By adopting the distortion compensation method and system for the gamma-ray treatment bed, the compensation dosage during the distortion can be got through the reference value for the reference position of the gamma-ray treatment bed and the measured value of the distortion position, and then the precise compensation can be carried out according to the compensation dosage, thus the corresponding precision compensation can be carried out on different distortions each time, and the using effect of a gamma-ray device can be greatly improved.
Description
Technical field
The present invention relates to deformation-compensated method of a kind of therapeutic bed and bucking-out system, relate in particular to deformation-compensated method of a kind of gamma-ray therapeutic bed and bucking-out system.
Background technology
Along with the development of medical skill, gamma-ray therapeutic equipment more and more becomes important medical apparatus and instruments medically.Gamma-ray therapeutic equipment generally includes therapeutic bed, and therapeutic bed can produce certain elastic deformation when bearing a heavy burden, the focus target spot skew irradiation center that the error that distortion produces is planned the patient, influence treatment.Gamma ray therapeutic apparatus adopts three kinds of modes to handle: first kind of mode, uncompensation to the strain error that therapeutic bed produces when bearing a heavy burden usually; The second way compensates with a fixed constant value; The third mode multiply by a coefficient with each patient's body weight and is worth by way of compensation and compensates.Can find out obviously that from above three kinds of processing modes in the strain Error processing that the gamma-ray therapeutic equipment therapeutic bed produces when bearing a heavy burden, first kind of mode directly ignored the processing mode of this error, this demonstration can not compensate; The second way and the third mode all can not be obtained accurately, and skew compensates accurately.Present gamma-ray therapeutic equipment therapeutic bed strain Error Compensation Technology, all can not measure the deflection that the back of bearing a heavy burden is produced in real time, the compensation technique error that is adopted is big, and same patient is residing position all around difference on therapeutic bed, the degeneration error that is produced is all inequality, can not reflect actual distortion situation.So also just can't implement therapeutic bed heavy burden strain error compensation accurately and effectively, greatly affect the therapeutic effect of gamma-ray therapeutic equipment.
Summary of the invention
The technical problem that the present invention solves is: make up deformation-compensated method of a kind of gamma-ray therapeutic bed and bucking-out system, overcome the technical problem of uncompensation in the prior art or gamma-ray therapeutic equipment therapeutic effect that can not the fine compensation influence.
Technical scheme of the present invention is: provide a kind of gamma-ray therapeutic bed deformation-compensated method, comprise the steps:
Reference value is set: the reference value that gamma-ray therapeutic bed reference position is set;
Obtain compensation dosage: obtain the gamma-ray therapeutic bed at the measured value that produces position, distortion back, obtain the compensation dosage of described gamma-ray therapeutic bed after distortion, the measured value after compensation dosage=reference value-distortion according to the measured value of position, gamma-ray therapeutic bed generation distortion back and the reference value of described gamma-ray therapeutic bed reference position;
Compensate: bring compensation dosage into compensation that compensation formula carries out the distortion of gamma-ray therapeutic bed.
Further technical scheme of the present invention is: in obtaining the compensation dosage step, the compensation dosage of described gamma-ray therapeutic bed after distortion comprises the compensation dosage of described gamma-ray therapeutic bed in the hyperspace distortion.
Further technical scheme of the present invention is: described gamma-ray therapeutic bed comprises the compensation dosage of described gamma-ray therapeutic bed above-below direction after distortion and the compensation dosage of fore-and-aft direction in the compensation dosage of hyperspace distortion.
Further technical scheme of the present invention is: in compensating step, bring the compensation dosage of above-below direction and the compensation dosage of fore-and-aft direction into compensation that compensation formula carries out the distortion of gamma-ray therapeutic bed.
Further technical scheme of the present invention is: the reference position of described gamma-ray therapeutic bed is the position of horizontal center.
Technical scheme of the present invention is: described gamma-ray therapeutic bed comprises the bed body of load-bearing, support the support member of described bed body, described deformation-compensated system comprises the checkout gear that detects the bed body deformability, described gamma-ray therapeutic bed is out of shape the compensating unit that compensates, described checkout gear is arranged on the position beyond the described gamma-ray therapeutic bed bed body lower support, described checkout gear detects the reference position of described gamma-ray therapeutic bed and the position after the distortion of described gamma-ray therapeutic bed, described compensating unit obtains the compensation dosage of described gamma-ray therapeutic bed distortion according to the measured value of position, described gamma-ray therapeutic bed distortion back and the reference value of described gamma-ray therapeutic bed reference position, measured value after compensation dosage=reference value-distortion, described compensating unit carry out the compensation of described gamma-ray therapeutic bed distortion according to described compensation dosage.
Further technical scheme of the present invention is: described detecting unit detects the compensation dosage of described gamma-ray therapeutic bed distortion in the hyperspace distortion.
Further technical scheme of the present invention is: described gamma-ray therapeutic bed comprises the compensation dosage of described gamma-ray therapeutic bed above-below direction after distortion and the compensation dosage of fore-and-aft direction in the compensation dosage of hyperspace distortion.
Further technical scheme of the present invention is: described compensating unit compensates the upper-lower position and the front and back position of described gamma-ray therapeutic bed distortion.
Technique effect of the present invention is: make up deformation-compensated method of a kind of gamma-ray therapeutic bed and bucking-out system, the reference value by gamma-ray therapeutic bed reference position and the measured value of deformation position obtain the compensation dosage when distortion, compensate accurately according to compensation dosage then, this has realized can carrying out corresponding fine compensation for different distortion at every turn, has improved the result of use of gamma ray device greatly.
Description of drawings
Fig. 1 is a flow chart of the present invention.
Fig. 2 is a gamma-ray therapeutic bed cross-sectional view of the present invention.
Fig. 3 is the enlarged drawing of A portion among Fig. 2 of the present invention.
The specific embodiment
Below in conjunction with specific embodiment, technical solution of the present invention is further specified.
As shown in Figure 1, the specific embodiment of the present invention is: provide a kind of gamma-ray therapeutic bed deformation-compensated method, comprise the steps:
Step 100: reference value is set, that is, the reference value of gamma-ray therapeutic bed reference position is set.Among the present invention, the reference value that gamma-ray therapeutic bed reference position is set comprises the reference value that gamma-ray therapeutic bed fore-and-aft direction reference position is set and the reference value of above-below direction reference position.In the preferred implementation of the present invention, the reference position of described gamma-ray therapeutic bed is the position of horizontal center.In the specific embodiments of the invention, the reference position of described gamma-ray therapeutic bed fore-and-aft direction is the centrage of gamma-ray therapeutic bed fore-and-aft direction, and the reference position of described gamma-ray therapeutic bed above-below direction is reference position in the horizontal direction, gamma-ray therapeutic bed surface.
Step 200: obtain compensation dosage, promptly, obtain the gamma-ray therapeutic bed at the measured value that produces position, distortion back, obtain the compensation dosage of described gamma-ray therapeutic bed after distortion according to the measured value of position, gamma-ray therapeutic bed generation distortion back and the reference value of described gamma-ray therapeutic bed reference position.
As Fig. 2, shown in Figure 3, detailed process is as follows: the bed body 5 of gamma-ray therapeutic bed produces distortion under the effect of heavy burden 7, when heavy burden center of gravity during on the line left side, therapeutic bed centre of support, then the distortion of therapeutic bed is shown in dotted line 1, as bear a heavy burden center of gravity when therapeutic bed the right, the distortion of gamma-ray therapeutic bed is shown in dotted line 2.The heavy burden distortion of gamma-ray therapeutic bed detects its deflection by a checkout gear, carries out the distortion inaccuracy compensation by control system again.At first, obtain the gamma-ray therapeutic bed and produce the position that is out of shape, then, with the gamma-ray therapeutic bed after producing distortion the position and the difference of the reference position on the respective direction measure by way of compensation, in the specific implementation process, the size of the absolute value representation compensation dosage of difference, the sign symbol of difference is represented the direction of compensation dosage.In the specific embodiments of the invention, solid line 3 is the datum line of gamma-ray therapeutic bed among the present invention, and checkout gear 4 at first detects solid line 3, with the detected value of solid line 3 as reference value Y, Z.After bearing a heavy burden, therapeutic bed produces distortion, as dotted line 1, dotted line 2, checkout gear detects dotted line 1 or dotted line 2 again, obtain the position after the gamma-ray therapeutic bed is out of shape, the measured value of position, gamma-ray therapeutic bed distortion back and the reference value of gamma-ray therapeutic bed reference position are carried out difference calculating, promptly obtain the compensation dosage of respective direction, be respectively Δ Y as the value of dotted line among the figure 1 or dotted line 2
1, Δ Z
1Or Δ Y
2, Δ Z
2The strain value of bearing a heavy burden with this therapeutic bed that detects in real time compensates, and has eliminated because the treatment error that the distortion of therapeutic bed produces, and specifically compensation process is as follows: with regard to three-dimensional coordinate, and the compensation dosage Δ Y=Y of above-below direction
Benchmark-Y
1(or Y
2), wherein, Y
BenchmarkBe the reference value of above-below direction, Y
1(or Y
2) be the measured value of above-below direction; The compensation dosage Δ Z=Z of fore-and-aft direction
Benchmark-Z
1(or Z
2), wherein, Z
BenchmarkBe the reference value of above-below direction, Z
1(or Z
2) be the measured value of above-below direction.
In the preferred implementation of the present invention, the compensation dosage of described gamma-ray therapeutic bed after distortion comprises the compensation dosage of described gamma-ray therapeutic bed in the hyperspace distortion.Obtain described gamma-ray therapeutic bed and comprise the compensation dosage of described gamma-ray therapeutic bed above-below direction after distortion and the compensation dosage of fore-and-aft direction in the compensation dosage of hyperspace distortion.Promptly, described gamma-ray therapeutic bed is the difference of the reference position of the position of described gamma-ray therapeutic bed above-below direction after distortion and above-below direction in the compensation dosage of above-below direction after the distortion, and described gamma-ray therapeutic bed is the difference of the reference position of the position of described gamma-ray therapeutic bed fore-and-aft direction after distortion and fore-and-aft direction in the compensation dosage of fore-and-aft direction after the distortion.
Step 300: compensate, that is, bring compensation dosage into compensation that compensation formula carries out the distortion of gamma-ray therapeutic bed.
The deformation-compensated method of a kind of gamma-ray therapeutic bed of the present invention, the reference value by gamma-ray therapeutic bed reference position and the measured value of deformation position obtain the compensation dosage when distortion, compensate accurately according to compensation dosage then, this has realized can carrying out corresponding fine compensation for different distortion at every turn, has improved the result of use of gamma ray device greatly.
As shown in Figure 2, the specific embodiment of the present invention is: make up the deformation-compensated system of a kind of gamma-ray therapeutic bed, described gamma-ray therapeutic bed comprises the bed body 5 of load-bearing, support the support member 6 of described bed body, described deformation-compensated system comprises the checkout gear 4 that detects the bed body deformability, described gamma-ray therapeutic bed is out of shape the compensating unit (not shown) that compensates, described checkout gear 4 is arranged on the position beyond described gamma-ray therapeutic bed bed body 5 lower support 6, described checkout gear 4 detects the reference value of described gamma-ray therapeutic bed reference position and the measured value of position, described gamma-ray therapeutic bed distortion back, described compensating unit obtains the compensation dosage of described gamma-ray therapeutic bed distortion according to the measured value of position, described gamma-ray therapeutic bed distortion back and the reference value of described gamma-ray therapeutic bed reference position, and described compensating unit carries out the compensation of described gamma-ray therapeutic bed distortion according to described compensation dosage.
As Fig. 2, shown in Figure 3, specific implementation process of the present invention is as follows: described checkout gear 4 detects the reference value of described gamma-ray therapeutic bed reference position, obtains the reference value of reference position.The present invention is in specific implementation process, the reference value of described reference position comprises the reference value of gamma-ray therapeutic bed multi-dimensional direction, in the specific embodiment, the reference value of described gamma-ray therapeutic bed multi-dimensional direction comprises the reference value of gamma-ray therapeutic bed fore-and-aft direction and the reference value of above-below direction.
After described checkout gear 4 detects the reference position of described gamma-ray therapeutic bed, obtain the measured value of position, described gamma-ray therapeutic bed distortion back again, described compensating unit obtains the compensation dosage of described gamma-ray therapeutic bed distortion according to the measured value of position, described gamma-ray therapeutic bed distortion back and the reference value of described gamma-ray therapeutic bed reference position, and described compensating unit carries out the compensation of described gamma-ray therapeutic bed distortion according to described compensation dosage.The bed body 5 of gamma-ray therapeutic bed produces distortion under the effect of heavy burden 7, when heavy burden center of gravity during on the line left side, therapeutic bed centre of support, then the distortion of therapeutic bed is shown in dotted line 1, and when therapeutic bed the right, the distortion of gamma-ray therapeutic bed is shown in dotted line 2 as the heavy burden center of gravity.The heavy burden distortion of gamma-ray therapeutic bed detects its deflection by a checkout gear, carries out the distortion inaccuracy compensation by control system again.At first, obtain the gamma-ray therapeutic bed and produce the position that is out of shape, then, with the gamma-ray therapeutic bed after producing distortion the position and the difference of the reference position on the respective direction measure by way of compensation, in the specific implementation process, the size of the absolute value representation compensation dosage of difference, the sign symbol of difference is represented the direction of compensation dosage.In the specific embodiments of the invention, solid line 3 is the datum line of gamma-ray therapeutic bed among the present invention, and checkout gear 4 at first detects solid line 3, with the detected value of solid line 3 as reference value Y, Z.After bearing a heavy burden, therapeutic bed produces distortion, as dotted line 1, dotted line 2, checkout gear detects dotted line 1 or dotted line 2 again, obtain the position after the gamma-ray therapeutic bed is out of shape, the coordinate of the position after the gamma-ray therapeutic bed distortion and the reference position of gamma-ray therapeutic bed is carried out difference calculating, promptly obtain the compensation dosage of respective direction, be respectively Δ Y as the value of dotted line among the figure 1 or dotted line 2
1, Δ Z
1Or Δ Y
2, Δ Z
2, with regard to three-dimensional coordinate, the compensation dosage Δ Y=Y of above-below direction
Benchmark-Y
1(or Y
2), wherein, Y
BenchmarkBe the reference value of above-below direction, Y
1(or Y
2) be the measured value of above-below direction; The compensation dosage Δ Z=Z of fore-and-aft direction
Benchmark-Z
1(or Z
2), wherein, Z
BenchmarkBe the reference value of above-below direction, Z
1(or Z
2) be the measured value of above-below direction.
。The strain value of bearing a heavy burden with this therapeutic bed that detects in real time compensates, and has eliminated the treatment error that the distortion owing to therapeutic bed produces.
The deformation-compensated system of a kind of gamma-ray therapeutic bed of the present invention, the reference value by gamma-ray therapeutic bed reference position and the measured value of deformation position obtain the compensation dosage when distortion, compensate accurately according to compensation dosage then, this has realized can carrying out corresponding fine compensation for different distortion at every turn, has improved the result of use of gamma ray device greatly.
The present invention further optimization embodiment is: described detecting unit 4 detects the compensation dosage of described gamma-ray therapeutic bed distortion in the hyperspace distortion, and described gamma-ray therapeutic bed comprises the compensation dosage of described gamma-ray therapeutic bed above-below direction after distortion and the compensation dosage of fore-and-aft direction in the compensation dosage of hyperspace distortion.Described compensating unit compensates the upper-lower position and the front and back position of described gamma-ray therapeutic bed distortion.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (9)
1. the deformation-compensated method of gamma-ray therapeutic bed comprises the steps:
Reference value is set: the reference value that gamma-ray therapeutic bed reference position is set;
Obtain compensation dosage: obtain the gamma-ray therapeutic bed at the measured value that produces position, distortion back, obtain the compensation dosage of described gamma-ray therapeutic bed after distortion, the measured value after compensation dosage=reference value-distortion according to the measured value of position, gamma-ray therapeutic bed generation distortion back and the reference value of described gamma-ray therapeutic bed reference position;
Compensate: bring compensation dosage into compensation that compensation formula carries out the distortion of gamma-ray therapeutic bed.
2. according to the deformation-compensated method of the described gamma-ray therapeutic bed of claim 1, it is characterized in that in obtaining the compensation dosage step, the compensation dosage of described gamma-ray therapeutic bed after distortion comprises the compensation dosage of described gamma-ray therapeutic bed in the hyperspace distortion.
3. according to the deformation-compensated method of the described gamma-ray therapeutic bed of claim 2, it is characterized in that described gamma-ray therapeutic bed comprises the compensation dosage of described gamma-ray therapeutic bed above-below direction after distortion and the compensation dosage of fore-and-aft direction in the compensation dosage of hyperspace distortion.
4. according to the deformation-compensated method of the described gamma-ray therapeutic bed of claim 3, it is characterized in that, in compensating step, bring the compensation dosage of above-below direction and the compensation dosage of fore-and-aft direction into compensation that compensation formula carries out the distortion of gamma-ray therapeutic bed.
5. according to the deformation-compensated method of the described gamma-ray therapeutic bed of claim 1, it is characterized in that the reference position of described gamma-ray therapeutic bed is the position of horizontal center.
6. deformation-compensated system of gamma-ray therapeutic bed, described gamma-ray therapeutic bed comprises the bed body of load-bearing, support the support member of described bed body, it is characterized in that, described deformation-compensated system comprises the checkout gear that detects the bed body deformability, described gamma-ray therapeutic bed is out of shape the compensating unit that compensates, described checkout gear is arranged on the position beyond the described gamma-ray therapeutic bed bed body lower support, described checkout gear detects the reference position of described gamma-ray therapeutic bed and the position after the distortion of described gamma-ray therapeutic bed, described compensating unit obtains the compensation dosage of described gamma-ray therapeutic bed distortion according to the measured value of position, described gamma-ray therapeutic bed distortion back and the reference value of described gamma-ray therapeutic bed reference position, measured value after compensation dosage=reference value-distortion, described compensating unit carry out the compensation of described gamma-ray therapeutic bed distortion according to described compensation dosage.
7. the deformation-compensated system of gamma-ray therapeutic bed according to claim 6 is characterized in that, described detecting unit detects the compensation dosage of described gamma-ray therapeutic bed distortion in the hyperspace distortion.
8. the deformation-compensated system of gamma-ray therapeutic bed according to claim 7, it is characterized in that described gamma-ray therapeutic bed comprises the compensation dosage of described gamma-ray therapeutic bed above-below direction after distortion and the compensation dosage of fore-and-aft direction in the compensation dosage of hyperspace distortion.
9. the deformation-compensated system of gamma-ray therapeutic bed according to claim 8 is characterized in that, described compensating unit compensates the upper-lower position and the front and back position of described gamma-ray therapeutic bed distortion.
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| CN2010105612542A CN102019042A (en) | 2010-11-26 | 2010-11-26 | Distortion compensation method and system for gamma-ray treatment bed |
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| CN2010105612542A CN102019042A (en) | 2010-11-26 | 2010-11-26 | Distortion compensation method and system for gamma-ray treatment bed |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102805643A (en) * | 2011-05-31 | 2012-12-05 | 上海西门子医疗器械有限公司 | System for compensating bending of inspection bed |
| CN104797193A (en) * | 2012-11-14 | 2015-07-22 | 皇家飞利浦有限公司 | Imaging system subject support |
| CN110270017A (en) * | 2019-06-21 | 2019-09-24 | 上海联影医疗科技有限公司 | Method for ensuring quality, radiotherapy system and the storage medium of hospital bed |
-
2010
- 2010-11-26 CN CN2010105612542A patent/CN102019042A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102805643A (en) * | 2011-05-31 | 2012-12-05 | 上海西门子医疗器械有限公司 | System for compensating bending of inspection bed |
| CN104797193A (en) * | 2012-11-14 | 2015-07-22 | 皇家飞利浦有限公司 | Imaging system subject support |
| CN104797193B (en) * | 2012-11-14 | 2018-11-13 | 皇家飞利浦有限公司 | Imaging system objects supporter |
| CN110270017A (en) * | 2019-06-21 | 2019-09-24 | 上海联影医疗科技有限公司 | Method for ensuring quality, radiotherapy system and the storage medium of hospital bed |
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Application publication date: 20110420 |