CN1227762A - Three-dimensional conformal block for radiotherapy and its making method - Google Patents
Three-dimensional conformal block for radiotherapy and its making method Download PDFInfo
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- CN1227762A CN1227762A CN 98123254 CN98123254A CN1227762A CN 1227762 A CN1227762 A CN 1227762A CN 98123254 CN98123254 CN 98123254 CN 98123254 A CN98123254 A CN 98123254A CN 1227762 A CN1227762 A CN 1227762A
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- dimensional conformal
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- conformal block
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Abstract
A method for manufacturing 3-D adaptive block used in radiotherapy features that the adaptive collimator is integrated with tissue compensator to form a 3-D adaptive block which has an open end and a back segment composed of internal cavity and external profile to match with the back edge of the focus. A mould core pressing process to form internal cavity is disclosed, and thus. more than one adaptive block in different shapes is unnecessary, and the preparation work before radiotherapy is simplified.
Description
The present invention relates to a kind of three-dimensional conformal device that is used for radiotherapy and preparation method thereof.
In existing radiotherapy, the laterally suitable shape of dosage field and the depth compensation on the depth direction are to adopt horizontal suitable shape collimator and the compensator of organizing on the depth direction to realize respectively.As Fig. 1, the effect of suitable shape collimator 1 is the edge, cross section and the projection edge mutually match of focus 3 on this direction that makes the high energy proton bundle 2 that passes suitable shape collimator, is shone with the normal structure of avoiding the next door.The effect of organizing compensator 4 (English by name bolus) is a longitudinal shape of adjusting bragg peak (English Bragg by name), makes itself and the back edge shape match mutually of focus 3.For each irradiation field, before treatment, all must be ready to suitable shape collimator and organize each one of compensator.In the radiotherapy of reality, for reaching satisfactory therapeutic effects, all select multifield radiation as much as possible, therefore, before treatment, must be ready to a series of suitable shape collimator and organize compensator.In order to make these utensils, the radiotherapy center must be equipped with some machinings center and highly skilled processing workman.So just must step up its investment, increase manually, and material also is difficult to reuse.
The purpose of this invention is to provide a kind of Three-dimensional conformal block and replace above-mentioned suitable shape collimator and organize compensator, and the manufacture method of Three-dimensional conformal block is provided.
The technical solution used in the present invention is: a kind ofly be used for radiocurable Three-dimensional conformal block, it is characterized in that: comprise inner chamber 6 and gabarit 7, its inner chamber 6 one end openings, other end sealing, the opening leading portion of inner chamber is a cylinder, its cross section is consistent with the projection of focus on this direction, back segment then with the back edge shape match of focus.
A kind of manufacture method of above-mentioned Three-dimensional conformal block, it is characterized in that: adopt extruding core rod extruding inner chamber molding mode, extruding core rod 8 is by the rectangular tight square formation structure of forming of a plurality of rectangles, each rectangular strip is adjusted its axial location by a driver drives, form and the conjugated shape of Three-dimensional conformal block inner chamber, be pressed into the shaping block 9 of Three-dimensional conformal block then, extract core rod 8.
Because will fit the shape collimator and organize compensator to merge, and adopt inelastic plastic material, artificial input has been saved in an extrusion modling, also reduces treatment cycle; Simulate three-dimensional cavity shape by adjusting the rectangular axial location of the extruding a plurality of rectangles of core rod, therefore only need to produce the various different Three-dimensional conformal blocks that require, simplified the preparation before the treatment once the cover core rod.
Below in conjunction with accompanying drawing and by specific embodiment the present invention is done further detailed description.
Fig. 1 is a suitable shape collimator and the sketch map of organizing compensator separately to use in the prior art.
Fig. 2 is the three-dimensional generalized section of Three-dimensional conformal block.
Fig. 3 is the composition sketch map of extruding core rod.
Fig. 4 is the extrusion process sketch map of Three-dimensional conformal block.
Referring to Fig. 2, to fit shape collimator 1 and organize compensator 4 to unite two into one and form Three-dimensional conformal block 5, be used for proton therapeutic, usually the material of making suitable shape collimator 1 is a light material, to avoid 2 dozens of high energy proton bundles producing too much neutron at that time, promptly neutron yield can not be high, is to stop high energy proton bundle 2 and organize compensator 4, to adjust the lengthwise position of bragg peak, organize compensator also must adopt light material to make.Therefore there is not the conflict of material, the two can make an integral body, form a Three-dimensional conformal block 5 that inner chamber 6 and gabarit 7 are arranged that has only an end opening, the leading portion of its inner chamber 6 (being proton beam incident end) is a cylinder, its cross section is consistent with the projection of focus on this direction, back segment then with the back edge shape match of focus 3, certainly at the accent that is used for X ray strong or transfer can the time, Three-dimensional conformal block can adopt the plastic material that is filled with tungsten alloy powder to make.
In the present embodiment, extruding inner chamber molding mode is adopted in the making of Three-dimensional conformal block, so good, the inelastic light material of the material selection plasticity of Three-dimensional conformal block, its shaping characteristic such as plasticine.Referring to Fig. 3 and Fig. 4, extruding core rod 8 is made of the rectangular square formation of forming of a plurality of rectangles, and the axial location of each rectangular strip is adjustable continuously, and each rectangular strip is by a driver drives.Adjust the position of each rectangular strip, form desired and the conjugated shape of inner chamber, it promptly is the shape 9 of focus 3, be pressed into the shaping block 9 of Three-dimensional conformal block then, a bin can be established in shaping block 9 next doors, with the unnecessary plastic material that storage is extruded, promptly form desired Three-dimensional conformal block after extracting core rod 8.
Claims (3)
1, a kind ofly is used for radiocurable Three-dimensional conformal block, it is characterized in that: comprise inner chamber (6) and gabarit (7), its inner chamber (6) one end openings, other end sealing, the opening leading portion of inner chamber is a cylinder, its cross section is consistent with the projection of focus on this direction, back segment then with the back edge shape match of focus.
2, Three-dimensional conformal block according to claim 1 is characterized in that: Three-dimensional conformal block adopts inelastic plastic material such as plasticine to make.
3, the manufacture method of the described Three-dimensional conformal block of a kind of claim 1, it is characterized in that: adopt extruding core rod extruding inner chamber molding mode, extruding core rod (8) is by the rectangular tight square formation structure of forming of a plurality of rectangles, each rectangular strip is adjusted its axial location by a driver drives, form and the conjugated shape of Three-dimensional conformal block inner chamber, be pressed into the shaping block (9) of Three-dimensional conformal block then, extract core rod (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98123254 CN1227762A (en) | 1998-12-04 | 1998-12-04 | Three-dimensional conformal block for radiotherapy and its making method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98123254 CN1227762A (en) | 1998-12-04 | 1998-12-04 | Three-dimensional conformal block for radiotherapy and its making method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1227762A true CN1227762A (en) | 1999-09-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98123254 Pending CN1227762A (en) | 1998-12-04 | 1998-12-04 | Three-dimensional conformal block for radiotherapy and its making method |
Country Status (1)
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| CN (1) | CN1227762A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104759038A (en) * | 2015-04-23 | 2015-07-08 | 中国科学院近代物理研究所 | Heavy ion radiotherapy multifunctional three-dimensional conformal intensity-modulating device and method |
-
1998
- 1998-12-04 CN CN 98123254 patent/CN1227762A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104759038A (en) * | 2015-04-23 | 2015-07-08 | 中国科学院近代物理研究所 | Heavy ion radiotherapy multifunctional three-dimensional conformal intensity-modulating device and method |
| CN104759038B (en) * | 2015-04-23 | 2017-12-22 | 中国科学院近代物理研究所 | The conformal intensity modulated device and method of heavy particle radiotherapy multifunction three-dimensional |
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