CN211024851U - Medical linear accelerator and medical instrument - Google Patents
Medical linear accelerator and medical instrument Download PDFInfo
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- CN211024851U CN211024851U CN201921296280.XU CN201921296280U CN211024851U CN 211024851 U CN211024851 U CN 211024851U CN 201921296280 U CN201921296280 U CN 201921296280U CN 211024851 U CN211024851 U CN 211024851U
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Abstract
The application discloses a medical linear accelerator, which comprises a diode gun accelerator, wherein the diode gun accelerator comprises a diode gun accelerating tube, an accelerating tube power supply and a pulse width regulator; the diode gun accelerator is used for generating medical radioactive rays; the accelerating tube power supply is used for supplying power to the diode gun accelerating tube; the pulse width regulator is used for regulating the pulse high-voltage pulse width of the accelerating tube power supply and changing the coincidence rate of the pulse high-voltage pulse width and the pulse width of the reflected wave of the medical linear accelerator. This application passes through pulse width adjustment ware is adjusted the pulse high voltage pulse width of accelerating tube power makes the pulse high voltage pulse width of accelerating tube power with the coincidence rate of the pulse width of back wave changes, realizes the diode gun accelerator can produce with the dose rate that changes ceaselessly medical radiation guarantees that the dose output accords with multiple advanced radiotherapy technical requirements such as dynamic intensity modulated radiation therapy. The present application further provides a medical device having the above-mentioned beneficial effects.
Description
Technical Field
The application relates to the field of radioactive rays, in particular to a medical linear accelerator and a medical instrument.
Background
With the development of science and technology, radiotherapy becomes an indispensable technical means in medical treatment, and among them, dynamic intensity modulated radiotherapy is one of the very accurate advanced treatment methods in radiotherapy systems, can provide a series of technologies of accurate positioning, accurate design and accurate treatment, is suitable for high-dose irradiation of the shape of a tumor target area, and can reduce the damage to normal tissues to the maximum extent, effectively improve sequela and later life quality.
However, the technology of the conventional diode gun accelerator is not complete enough, the dose rate cannot be dynamically adjusted in real time during beam output, and the increasingly developed advanced dynamic intensity modulated radiotherapy technical requirements cannot be met, so that the development of the two-stage gun accelerator is hindered. Therefore, the diode gun accelerator capable of performing precise advanced radiotherapy technology such as dynamic intensity modulation is very urgent and is the development trend of the diode gun accelerator made in China. Therefore, it is an urgent problem to be solved by those skilled in the art to find a technique for a dynamically intensity-modulated diode gun accelerator.
SUMMERY OF THE UTILITY MODEL
The application aims to provide a medical linear accelerator and a medical instrument, and aims to solve the problem that the medical linear accelerator using a dipolar gun in the prior art cannot adjust the beam output rate in real time.
In order to solve the technical problem, the present application provides a medical linear accelerator, which includes a diode gun accelerator, wherein the diode gun accelerator includes a diode gun accelerating tube, an accelerating tube power supply and a pulse width regulator;
the diode gun accelerator is used for generating medical radioactive rays;
the accelerating tube power supply is used for supplying power to the diode gun accelerating tube;
the pulse width regulator is used for regulating the pulse high-voltage pulse width of the accelerating tube power supply and changing the coincidence rate of the pulse high-voltage pulse width and the pulse width of the reflected wave of the medical linear accelerator.
Optionally, in the medical linear accelerator, the medical linear accelerator further includes a radiation detector.
Optionally, in the medical linear accelerator, the pulse width of the pulsed high voltage is in a range of 1 microsecond to 7 microseconds, inclusive.
Optionally, in the medical linear accelerator, the medical linear accelerator further includes a filter circuit.
Optionally, in the medical linear accelerator, the medical linear accelerator further includes a protection circuit.
Optionally, in the medical linear accelerator, the medical linear accelerator further includes a fault detection circuit.
The present application further provides a medical device comprising a medical linear accelerator as described in any of the above.
The medical linear accelerator comprises a diode gun accelerator, wherein the diode gun accelerator comprises a diode gun accelerating tube, an accelerating tube power supply and a pulse width regulator, the diode gun accelerating tube is used for generating medical radioactive rays, the accelerating tube power supply is used for supplying power to the diode gun accelerating tube, the pulse width regulator is used for regulating the pulse high-voltage pulse width of the accelerating tube power supply and changing the coincidence rate of the pulse high-voltage pulse width and the reflected wave pulse width of the medical linear accelerator.
Drawings
For a clearer explanation of the embodiments or technical solutions of the prior art of the present application, the drawings needed for the description of the embodiments or prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of a medical linear accelerator provided in the present application;
fig. 2 is a schematic structural diagram of another embodiment of the medical linear accelerator provided in the present application.
Detailed Description
In order that those skilled in the art will better understand the disclosure, the following detailed description will be given with reference to the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The core of the present application is to provide a medical linear accelerator, a schematic structural diagram of one embodiment of which is shown in fig. 1, and is called as a first embodiment, and the medical linear accelerator includes a diode gun accelerator, where the diode gun accelerator includes a diode gun accelerator 100, an accelerator power supply 200, and a pulse width modulator 300;
the diode gun accelerator 100 is used for generating medical radiation;
the accelerator power supply 200 is used for supplying power to the diode gun accelerator 100;
the pulse width adjuster 300 is configured to adjust a pulse width of the pulse high voltage of the accelerating tube power supply 200, and change a coincidence rate of the pulse width of the pulse high voltage and a pulse width of a reflected wave of the medical linear accelerator.
In particular, the pulse width of the pulsed high voltage is in a range of 1 microsecond to 7 microseconds, inclusive, such as any one of 1.0 microsecond, 5.3 microseconds, or 7.0 microseconds.
Further, the pulse width modulator 300 is integrated into the acceleration tube power supply 200.
The medical linear accelerator comprises a diode gun accelerator, the diode gun accelerator comprises a diode gun accelerating tube 100, an accelerating tube power supply 200 and a pulse width regulator 300, the diode gun accelerating tube 100 is used for generating medical radioactive rays, the accelerating tube power supply 200 is used for supplying power to the diode gun accelerating tube 100, the pulse width regulator 300 is used for regulating the pulse high-voltage pulse width of the accelerating tube power supply 200 and changing the coincidence rate of the pulse high-voltage pulse width and the reflected wave pulse width of the medical linear accelerator, the pulse width regulator 300 is used for regulating the pulse high-voltage pulse width of the accelerating tube power supply 200, so that the coincidence rate of the pulse high-voltage pulse width of the accelerating tube power supply 200 and the pulse width of the reflected wave is changed, the higher the coincidence rate of the pulse high-voltage pulse width of the accelerating tube power supply 200 and the reflected wave pulse width is, the highest dose rate is obtained when the pulse high-voltage pulse width of the accelerating tube power supply 200 and the reflected wave pulse width are completely coincided, the pulse rate of the accelerating tube power supply 200 is regulated in real time, and the pulse high-voltage pulse width of the accelerating tube power supply 200 can be continuously regulated to meet the requirements of various radioactive ray radiation therapy technologies and the requirements of various radioactive rays.
On the basis of the first embodiment, a radiation detector 400 is further added to the medical linear accelerator to obtain a second embodiment, which has a schematic structural diagram as shown in fig. 2 and includes a diode gun accelerator including a diode gun accelerator 100, an accelerator power supply 200 and a pulse width modulator 300;
the diode gun accelerator 100 is used for generating medical radiation;
the accelerator power supply 200 is used for supplying power to the diode gun accelerator 100;
the pulse width regulator 300 is configured to regulate a pulse width of the pulse high voltage of the accelerating tube power supply 200, and change a coincidence rate of the pulse width of the pulse high voltage and a pulse width of a reflected wave of the medical linear accelerator;
the medical linear accelerator further includes a radiation detector 400.
The present embodiment is different from the above embodiments in that a radiation detector 400 is added to the medical linear accelerator in the present embodiment, and the rest of the structure is the same as that of the above embodiments, and will not be described herein again.
Specifically, the radiation detector 400 is a radiation detector 400 that obtains the dose rate of the medical radiation through an ionization chamber. The ionization chamber obtains the absorbed dose through calculation by measuring the ionization charge quantity of secondary particles generated in the process of the interaction of ionizing radiation and substances, and has better sensitivity and accuracy.
In this embodiment, the radiation detector 400 is additionally provided for the medical linear accelerator, the radiation detector 400 can acquire the dose rate of the medical radiation at a preset time interval, compare the dose rate with the preset value, and adjust the coincidence rate of the pulse width of the pulse high voltage and the pulse width of the reflected wave of the medical linear accelerator in time when the actually acquired dose rate does not meet the preset value, so as to achieve the effect of adjusting the dose rate of the medical radiation and ensure the beam-emitting accuracy of the medical linear accelerator.
Still further, the predetermined time interval ranges from 30 milliseconds to 100 milliseconds, inclusive, such as any of 30.0 milliseconds, 55.6 milliseconds, or 100.0 milliseconds. By presetting the time interval in the millisecond level, the time that the dose rate of the medical radioactive rays is the same as the preset value is prolonged, and the beam-emitting accuracy of the medical linear accelerator is further improved.
On the basis of the second embodiment, an auxiliary circuit is further added to the medical linear accelerator to obtain a third embodiment, which is shown in fig. 2, and the structural schematic diagram of the medical linear accelerator is the same as that shown in fig. 2, and the medical linear accelerator is not separately shown because the circuit is included in each existing structure and comprises a diode gun accelerator, wherein the diode gun accelerator comprises a diode gun accelerating tube 100, an accelerating tube power supply 200 and a pulse width regulator 300;
the diode gun accelerator 100 is used for generating medical radiation;
the accelerator power supply 200 is used for supplying power to the diode gun accelerator 100;
the pulse width regulator 300 is configured to regulate a pulse width of the pulse high voltage of the accelerating tube power supply 200, and change a coincidence rate of the pulse width of the pulse high voltage and a pulse width of a reflected wave of the medical linear accelerator;
the medical linear accelerator further includes a radiation detector 400;
the radiation detector is used for acquiring the dose rate of the medical radiation according to a preset time interval, and when the dose of the medical radiation is larger than a preset value, the coincidence rate of the pulse high-voltage pulse width and the pulse width of the reflected wave of the medical linear accelerator is reduced;
when the dose of the medical radioactive rays is smaller than a preset value, the pulse width of the pulse high voltage and the pulse width of the reflected wave of the medical linear accelerator coincide;
the medical linear accelerator further comprises a fault detection circuit.
The difference between the present embodiment and the above embodiments is that a fault detection circuit is added to the medical linear accelerator in the present embodiment, and the rest of the structure is the same as that in the above embodiments, and is not described herein again.
Compared with other technical schemes, the specific embodiment is additionally provided with a fault detection circuit, and the fault detection circuit is used for detecting whether electric signals at all places in the medical linear accelerator are abnormal or not so as to improve the working stability of the medical linear accelerator.
Furthermore, the medical linear accelerator also comprises a protection circuit for preventing unstable factors in the circuit from influencing the circuit effect, such as overcurrent protection, overvoltage protection, overheating protection, no-load protection, short-circuit protection and the like.
Still further, the medical linear accelerator further comprises a filter circuit. The filter circuit is used for filtering noise rays in the medical radiation.
The medical linear accelerator comprises a diode gun accelerator, the diode gun accelerator comprises a diode gun accelerator 100, an accelerator tube power supply 200 and a pulse width regulator 300, the diode gun accelerator tube 100 is used for generating medical radioactive rays, the accelerator tube power supply 200 is used for supplying power to the diode gun accelerator tube 100, the pulse width regulator 300 is used for regulating the pulse high-voltage pulse width of the accelerator tube power supply 200 and changing the coincidence rate of the pulse high-voltage pulse width and the reflected wave pulse width of the medical linear accelerator, the pulse width regulator 300 is used for regulating the pulse high-voltage pulse width of the accelerator tube power supply 200, the coincidence rate of the pulse high-voltage pulse width of the accelerator tube power supply 200 and the pulse width of the reflected wave is changed, the higher the coincidence rate of the pulse high-voltage pulse width of the accelerator tube power supply 200 and the reflected wave pulse width is, the higher the dose rate of the medical linear accelerator is, when the pulse high-voltage pulse width of the accelerator tube power supply 200 and the pulse width are completely coincided with each other, the highest dose rate of the pulse high-voltage pulse width of the accelerator tube power supply 200 and the pulse width of the medical linear accelerator tube power supply 200 can be regulated in real time, the pulse width of the accelerator tube power supply can be adjusted in real time, and the radiation gun can be used for advanced radiation therapy, and the radiation therapy can be performed according with various radiation treatment requirements of various.
The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
It is to be noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The medical linear accelerator and the medical instrument provided by the present application are described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
Claims (6)
1. The medical linear accelerator is characterized by comprising a diode gun accelerator, wherein the diode gun accelerator comprises a diode gun accelerating tube, an accelerating tube power supply and a pulse width regulator;
the diode gun accelerator is used for generating medical radioactive rays;
the accelerating tube power supply is used for supplying power to the diode gun accelerating tube;
the pulse width regulator is used for regulating the pulse high-voltage pulse width of the accelerating tube power supply and changing the coincidence rate of the pulse high-voltage pulse width and the pulse width of the reflected wave of the medical linear accelerator.
2. The medical linear accelerator of claim 1, further comprising a radiation detector.
3. The medical linear accelerator of claim 1, further comprising a filter circuit.
4. The medical linear accelerator of claim 1, further comprising a protection circuit.
5. The medical linear accelerator of claim 1, further comprising a fault detection circuit.
6. A medical device, characterized in that it comprises a medical linear accelerator according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921296280.XU CN211024851U (en) | 2019-08-08 | 2019-08-08 | Medical linear accelerator and medical instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921296280.XU CN211024851U (en) | 2019-08-08 | 2019-08-08 | Medical linear accelerator and medical instrument |
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| CN211024851U true CN211024851U (en) | 2020-07-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110327555A (en) * | 2019-08-08 | 2019-10-15 | 山东新华医疗器械股份有限公司 | A kind of clinac and medical instrument |
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2019
- 2019-08-08 CN CN201921296280.XU patent/CN211024851U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110327555A (en) * | 2019-08-08 | 2019-10-15 | 山东新华医疗器械股份有限公司 | A kind of clinac and medical instrument |
| CN110327555B (en) * | 2019-08-08 | 2024-05-03 | 山东新华医疗器械股份有限公司 | Medical linear accelerator and medical instrument |
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