CN1560614A - Intensity modulation checking tomograph and intensity modulation checking phantom - Google Patents
Intensity modulation checking tomograph and intensity modulation checking phantom Download PDFInfo
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- CN1560614A CN1560614A CNA2004100155390A CN200410015539A CN1560614A CN 1560614 A CN1560614 A CN 1560614A CN A2004100155390 A CNA2004100155390 A CN A2004100155390A CN 200410015539 A CN200410015539 A CN 200410015539A CN 1560614 A CN1560614 A CN 1560614A
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Abstract
The invention relates to a reinforcing validation faultage and the reinforcing validation film, the invention uses water to substitute for rewater material in the faultage, thus it solves the problem that when the reinforcing validates the film measuring absolute dose, there needs a conversion factor, thus the precision of measurement can be improved.
Description
Technical field
The present invention relates to a kind of accent strong authentication tomography and transfer the strong authentication phantom, in particular, it relates to a kind of tomography and phantom of intensity modulated radiation therapy dosage checking.
Background technology
At present, known accent strong authentication phantom is by transferring strong authentication tomography, base, shelf etc. to constitute.Wherein transferring the strong authentication tomography is the object of sheet, and it is the object that main effect takes place with ray.Transfer the measured hole that generally is equipped with ionization chamber in the middle of the strong authentication tomography to be used to place ionization chamber and measure absolute dosages, transfer for two and can place material such as the film that a dosage measurement that is used for face is used between the strong authentication tomography.Transfer strong phantom to form by the accent strong authentication tomography more than two usually for one, generally have on the accent strong authentication tomography X ray opaque markers point is arranged, the effect of this gauge point is to stay the point that can discern just can be compared exactly with the position on the film in the position in the treatment plan like this on film.
Transferring the used material of strong authentication tomography mainly is the near nearly water material of some physical propertys and water, using nearly water material mainly is in order to simulate the tissue of human body, it simultaneously also is convenience in order to measure, need some correction factors because use ionization chamber to measure absolute dosages, and these factors all are the benchmark acquisition with water.Nearly water material mainly contains two big classes, first solid water class, solid water are almost to be made of with the on all four material of water physical property, and it has a lot and water characteristic together, difference water is liquid, and solid water is solid-state can the use very easily at normal temperatures; It two is non-solid water classes, and they are some physical propertys and the approaching material of water, as polystyrene.In order to simulate the difference of the various tissues of human body, transfer the normal object that adds some imitation human organ density and shape in the strong authentication tomography.
Be the absolute absorption dosage of measuring one or more point with domestic checking commonly used abroad, and measure one or more relative dosage.
Measuring absolute absorption dosage is that ionization chamber is injected the measured hole of transferring the strong authentication tomography, doing irradiation then under accelerator multiply by the corresponding factor with the dosemeter reading and just obtains absolute absorption dosage, this factor is main relevant with the illuminate condition and the irradiated material of machine, we at ordinary times dosage detect the time standby be water, the used factor all is benchmark with water, non-solid water class is different especially mass-energy transformation ratio because its a lot of physical propertys are compared with the WATER AS FLOW MEDIUM that measurement is used always, so non-solid water class can not directly use the used factor of the ionization chamber of daily correction dose output to measure absolute absorption dosage, also must attach some modifying factors, so not only increased workload, its result is also inaccurate.The solid water material has overcome this shortcoming of non-solid water class material to a great extent, and is high but solid water has only at present from external import price.
Summary of the invention
First task of the present invention is to overcome deficiency of the prior art, and the accent strong authentication tomography of a kind of low price effect almost solid easy to use water is provided.
Second task of the present invention is to provide a kind of accent strong authentication phantom by the accent strong authentication tomography in the first task.
Accent strong authentication tomography among the present invention is that nearly water material water and the shell in the accent strong authentication tomography of realizing like this replaces, because glassware for drinking water has flowability, so need be with shell enclosed package in addition.
Shell in the aforesaid accent strong authentication tomography is generally formed by the nearly water material of thin layer.
Aforesaid accent strong authentication tomography can be an arbitrary shape, but with cylindrical be good.
Also can be on the aforesaid accent strong authentication tomography by the gauge point that is used for the film location, whether this gauge point is not limited to is that X ray is transparent.
The measured hole of ionization chamber also can be arranged in the aforesaid accent strong authentication tomography, be used to place ionization chamber.
Also can add the object that some copy human organ density and shape in the aforesaid accent strong authentication tomography.
Aforesaid accent strong authentication tomography changes water for convenience, transfers the strong authentication tomography can be useful on the device of changing water.
Accent strong authentication phantom among the present invention is that the accent strong authentication tomography among a kind of the present invention of including constitutes accent strong authentication phantom.
Aforesaid accent strong authentication phantom includes the accent strong authentication tomography among a slice the present invention at least.
Description of drawings
Figure one is for transferring the synoptic diagram of strong authentication tomography embodiment.
Present embodiment is made up of shell (1), water (2), ionization chamber hole (3), human organ analogies (4) etc.Wherein shell (1) is airtight, and water (2) just is in this airtight space, and shell (1) is formed by nearly water material.Ionization chamber hole (3) is used for placing the measurement ionization chamber and uses on shell (1).Connection between human organ analogies (4) and the shell (1) is demountable.
The present invention is interpreted as: it can show as other specific embodiment that does not break away from the present invention's spirit and substantive features.Therefore embodiment and example here is illustrative and nonrestrictive.The present invention is not limited to details provided here.
The present invention courageously and dexterously will transfer the nearly water material water in the strong authentication tomography to replace, and need conversion factor thereby solved when non-solid water class is transferred strong authentication phantom measurement absolute dosages, thereby improve the accuracy of measuring, and also reduce manufacturing expense.
Claims (9)
1. transfer the strong authentication tomography for one kind, it is characterized in that: transfer nearly water material water and shell in the strong authentication tomography to replace.
2. accent strong authentication tomography as claimed in claim 1 is characterized in that: shell is generally formed by the nearly water material of thin layer.
3. accent strong authentication tomography as claimed in claim 1 is characterized in that: transferring the strong authentication tomography can be arbitrary shape, but with cylindrical be good.
4. accent strong authentication tomography as claimed in claim 1 is characterized in that: transferring also can be by the gauge point that is used for the film location on the strong authentication tomography, and whether this gauge point is not limited to is that X ray is transparent.
5. accent strong authentication tomography as claimed in claim 1 is characterized in that: transfer the measured hole that ionization chamber also can be arranged in the strong authentication tomography, be used to place ionization chamber.
6. accent strong authentication tomography as claimed in claim 1 is characterized in that: transfer also to add the object that some copy human organ density and shape in the strong authentication tomography.
7. accent strong authentication tomography as claimed in claim 1 is characterized in that: transfer the strong authentication tomography to change water for convenience, transfer the strong authentication tomography can be useful on the device of changing water.
8. one kind has the described accent strong authentication of claim 1-7 tomography and constitutes and transfer the strong authentication phantom.
9. accent strong authentication phantom as claimed in claim 1 is characterized in that: transfer the strong authentication phantom to include a slice such as the described accent strong authentication of claim 1-7 tomography at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100155390A CN1560614A (en) | 2004-03-03 | 2004-03-03 | Intensity modulation checking tomograph and intensity modulation checking phantom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100155390A CN1560614A (en) | 2004-03-03 | 2004-03-03 | Intensity modulation checking tomograph and intensity modulation checking phantom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1560614A true CN1560614A (en) | 2005-01-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004100155390A Pending CN1560614A (en) | 2004-03-03 | 2004-03-03 | Intensity modulation checking tomograph and intensity modulation checking phantom |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1560614A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105807306A (en) * | 2016-04-25 | 2016-07-27 | 张宏涛 | Radioactive particle radiation dose measurement device and measurement method thereof |
-
2004
- 2004-03-03 CN CNA2004100155390A patent/CN1560614A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105807306A (en) * | 2016-04-25 | 2016-07-27 | 张宏涛 | Radioactive particle radiation dose measurement device and measurement method thereof |
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