CN101081177A - Method for real time tracking of knub position through radiotherapy - Google Patents
Method for real time tracking of knub position through radiotherapy Download PDFInfo
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- CN101081177A CN101081177A CNA2006100609231A CN200610060923A CN101081177A CN 101081177 A CN101081177 A CN 101081177A CN A2006100609231 A CNA2006100609231 A CN A2006100609231A CN 200610060923 A CN200610060923 A CN 200610060923A CN 101081177 A CN101081177 A CN 101081177A
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Abstract
The present invention relates to real-time tumor position tracking method for radiotherapy. The change rules of tumor portions with breathing movement are first found out with one breathing movement sensor, and data of breathing movement are then measured with the breathing movement sensor for calculating the changed tumor position. The present invention makes it possible to track tumor timely in radiotherapy.
Description
Technical field
The present invention relates to the method for tumor position real-time tracking in a kind of radiotherapy.
Prior art
In radiation therapy process, need carry out accurate localization to the sick position of patient's tumor.Being used for body accurate localization method at present is to adopt the body positioning framework that contains the witness marker bar that tumor is positioned.Utilize this localization method all can only carry out the location of nature static and can't tumor position real-time tracking change and make the target spot dynamic tracking knub position of ray, and, tend to cause in fact owing to people's breathing reason to the tumor of body
The motion of body tumor tissues, the static immobilization of prior art can not be carried out real-time tracking with the skew that breathing causes to tumor, thereby cause to guarantee that ray target is all the time to prospective tumor in the process of treatment, can't guarantee the precision treatment, influence therapeutic effect even produce serious adverse.
Summary of the invention
The invention provides a kind of method of real time tracking of knub position through radiotherapy, with solve prior art can only to the tumor of body carry out nature static the location and can't tumor position real-time tracking and make the technical problem of the target spot dynamic tracking knub position of ray.
In order to solve above technical problem, the technical scheme that the present invention takes is:
A kind of method of real time tracking of knub position through radiotherapy is characterized in that, may further comprise the steps:
(1) at patient's breast abdominal part respiratory movement transducer and three-dimensional detent mechanism are installed;
(2) make patient air-breathing deeply, hold one's breath, be CT scan T1, sweep limits must comprise tumor, simultaneously the numerical value K1 of recording respiration motion sensor; Allow patient exhale deeply, hold one's breath, be CT scan T2 again, sweep limits must comprise tumor, simultaneously the numerical value K2 of recording respiration motion sensor;
(3) calculate the changing value Δ a of tumour 3 D position by T2 and T1, Δ b, Δ c, wherein Δ a is the direction parallel with patient's spinal column, calculate its changing value Δ K by K2 and K1, calculate the rate of change Δ Pa=Δ a/ Δ K of knub position, Δ Pb=Δ b/ Δ K, Δ Pc=Δ c/ Δ K with respect to the motion sensor change in location;
(4) change owing to the knub position that causes by respiratory movement is uniform substantially, shift position Δ X=Δ Pa (Kx-K1) in the time of can calculating tumor with respect to T1 by the Kx value that respiratory movement transducer records in real time, Δ Y=Δ Pb (Kx-K1), Δ Z=Δ Pc (Kx-K1).
Described and the vertical Δ Y of patient's spinal column direction, Δ Z changes little with respiratory movement, can calculate.
After having adopted technique scheme, because the change of the knub position that causes by respiratory movement has uniformity, only need by respiratory movement transducer find out that knub position changes and respiratory movement between Changing Pattern can calculate the real-time change situation of knub position by the respiratory movement data back that respiratory movement transducer records in real time, solved prior art can only to the tumor of body carry out nature static the location and can't tumor position real-time tracking and make the technical problem of the target spot dynamic tracking knub position of ray.After the displacement of as above tumor position real-time tracking, can be compensated by of the displacement of computer software control therapeutic bed when implementing treatment knub position, accomplish to implement to follow the tracks of accurately location when making treatment.In addition because knub position is very little with respirometric variation, with the variation of the respirometric reacting condition knub position that records, be actually and the variation of knub position carried out several times amplification, therefore the result who calculates thus is also more accurate.At last, operation is simple in the present invention, and process is short, do not increase patient's misery.
The specific embodiment
A kind of method of real time tracking of knub position through radiotherapy is characterized in that, may further comprise the steps:
(1) in patient's chest respiratory movement transducer and three-dimensional detent mechanism are installed;
(2) make patient air-breathing deeply, hold one's breath, be CT scan T1, sweep limits must comprise tumor, simultaneously the numerical value K1 of recording respiration motion sensor; Allow patient exhale deeply, hold one's breath, be CT scan T2 again, sweep limits must comprise tumor, simultaneously the numerical value K2 of recording respiration motion sensor;
(3) calculate the changing value Δ a of tumour 3 D position by T2 and T1, Δ b, Δ c, wherein Δ a is the direction parallel with patient's spinal column, calculate its changing value Δ K by K2 and K1, calculate the rate of change Δ Pa=Δ a/ Δ K of knub position, Δ Pb=Δ b/ Δ K, Δ Pc=Δ c/ Δ K with respect to the motion sensor change in location;
(4) change owing to the knub position that causes by respiratory movement is uniform substantially, shift position Δ X=Δ Pa (Kx-K1) in the time of can calculating tumor with respect to T1 by the Kx value that respiratory movement transducer records in real time, Δ Y=Δ Pb (Kx-K1), Δ Z=Δ Pc (Kx-K1).
Certainly since with the vertical Δ Y of patient's spinal column direction, Δ Z changes little with respiratory movement, can calculate.
After the displacement of as above tumor position real-time tracking, can be compensated by of the displacement of computer software control therapeutic bed when implementing treatment knub position, accomplish to implement to follow the tracks of accurately location when making treatment.
Claims (2)
1, a kind of method of real time tracking of knub position through radiotherapy is characterized in that, may further comprise the steps:
(1) at patient's breast abdominal part respiratory movement transducer and three-dimensional detent mechanism are installed;
(2) make patient air-breathing deeply, hold one's breath, be CT scan T1, sweep limits must comprise tumor, simultaneously the numerical value K1 of recording respiration motion sensor; Allow patient exhale deeply, hold one's breath, be CT scan T2 again, sweep limits must comprise tumor, simultaneously the numerical value K2 of recording respiration motion sensor;
(3) calculate the changing value Δ a of tumour 3 D position by T2 and T1, Δ b, Δ c, wherein Δ a is the direction parallel with patient's spinal column, calculate its changing value Δ K by K2 and K1, calculate the rate of change Δ Pa=Δ a/ Δ K of knub position, Δ Pb=Δ b/ Δ K, Δ Pc=Δ c/ Δ K with respect to the motion sensor change in location;
(4) change owing to the knub position that causes by respiratory movement is uniform substantially, shift position Δ X=Δ Pa (Kx-K1) in the time of can calculating tumor with respect to T1 by the Kx value that respiratory movement transducer records in real time, Δ Y=Δ Pb (Kx-K1), Δ Z=Δ Pc (Kx-K1).
2, the method for real time tracking of knub position through radiotherapy as claimed in claim 1 is characterized in that, the described and vertical Δ Y of patient's spinal column direction, and Δ Z changes little with respiratory movement, can calculate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100609231A CN101081177A (en) | 2006-05-30 | 2006-05-30 | Method for real time tracking of knub position through radiotherapy |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2006100609231A CN101081177A (en) | 2006-05-30 | 2006-05-30 | Method for real time tracking of knub position through radiotherapy |
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| CN101081177A true CN101081177A (en) | 2007-12-05 |
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| CNA2006100609231A Pending CN101081177A (en) | 2006-05-30 | 2006-05-30 | Method for real time tracking of knub position through radiotherapy |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014131178A1 (en) * | 2013-02-28 | 2014-09-04 | 深圳市奥沃医学新技术发展有限公司 | Respiration tracking apparatus and radiation therapy system |
| CN104689479A (en) * | 2013-12-06 | 2015-06-10 | 刘苗生 | Airbag simulated cradle bed for radiotherapy equipment |
| CN104984481A (en) * | 2015-05-20 | 2015-10-21 | 清华大学 | Method and system for carrying out on-line compensation on tumor motion generated by breathing |
| CN106725897A (en) * | 2017-01-24 | 2017-05-31 | 新博医疗技术有限公司 | One kind breathing tracking and monitoring communication system |
| CN107126192A (en) * | 2017-04-18 | 2017-09-05 | 四川省肿瘤医院 | A kind of knub position real-time monitoring system and its monitoring method |
| CN110366389A (en) * | 2017-06-19 | 2019-10-22 | 深圳市奥沃医学新技术发展有限公司 | The method, apparatus and radiotherapy apparatus of target position are determined using radiotherapy apparatus |
-
2006
- 2006-05-30 CN CNA2006100609231A patent/CN101081177A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014131178A1 (en) * | 2013-02-28 | 2014-09-04 | 深圳市奥沃医学新技术发展有限公司 | Respiration tracking apparatus and radiation therapy system |
| CN104689479A (en) * | 2013-12-06 | 2015-06-10 | 刘苗生 | Airbag simulated cradle bed for radiotherapy equipment |
| WO2015081590A1 (en) * | 2013-12-06 | 2015-06-11 | 刘苗生 | Bionic airbag cradle bed used for radiotherapy equipment |
| CN104689479B (en) * | 2013-12-06 | 2017-09-15 | 刘苗生 | A kind of air bag Bionic cradle bed for radiotherapy apparatus |
| CN104984481A (en) * | 2015-05-20 | 2015-10-21 | 清华大学 | Method and system for carrying out on-line compensation on tumor motion generated by breathing |
| CN104984481B (en) * | 2015-05-20 | 2017-10-24 | 清华大学 | The method and system of online compensation are carried out to the tumor motion that breathing is produced |
| CN106725897A (en) * | 2017-01-24 | 2017-05-31 | 新博医疗技术有限公司 | One kind breathing tracking and monitoring communication system |
| CN107126192A (en) * | 2017-04-18 | 2017-09-05 | 四川省肿瘤医院 | A kind of knub position real-time monitoring system and its monitoring method |
| CN110366389A (en) * | 2017-06-19 | 2019-10-22 | 深圳市奥沃医学新技术发展有限公司 | The method, apparatus and radiotherapy apparatus of target position are determined using radiotherapy apparatus |
| CN110366389B (en) * | 2017-06-19 | 2023-03-03 | 深圳市奥沃医学新技术发展有限公司 | System and device for determining target point position by using radiotherapy equipment and radiotherapy equipment |
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Open date: 20071205 |