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Application of coordinate method to positioning and posture placing in radiotherapy

A radiotherapy, coordinate method technology, applied in radiotherapy, therapy, X-ray/γ-ray/particle irradiation therapy and other directions, can solve the problems of prolonging the stay time in the treatment room, increasing the radiation dose of tumor patients, etc., to ensure the accuracy, Guaranteed effect of radiotherapy

Pending Publication Date: 2019-09-17
新乡市中心医院 +1
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Problems solved by technology

However, EPID filming and CBCT scanning are similar to diagnostic CT scans, which use the principle of X-ray penetration for imaging. Therefore, CBCT scanning will generate a certain amount of ionizing radiation dose and a certain scanning time during treatment, which will increase the radiation dose of tumor patients to a certain extent. , relatively prolonging the stay in the treatment room, which should be considered when making a treatment plan

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  • Application of coordinate method to positioning and posture placing in radiotherapy
  • Application of coordinate method to positioning and posture placing in radiotherapy
  • Application of coordinate method to positioning and posture placing in radiotherapy

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Embodiment

[0036] According to above-mentioned requirement, adopt technical scheme of the present invention, measure figure 2 Coordinate values ​​shown: take xiphoid as 0 point, center (0, +11), upper bound (-1, +16.5, +2.5, +16.5), lower bound (-1, +5.5, +4, +6.5) , inner (-3.5, +10, -4, +13), outer (+6, +13);

[0037] image 3 Coordinate values ​​shown: take the xiphoid process as 0 point, upper point (-0.5, +10), middle point (-1, +12), lower point (-1.5, +14), side point (+3.5, +12 );

[0038] Figure 4 Coordinate values ​​shown: xiphoid process as 0 point, treatment center (0, +16), reference point (+4, +9).

[0039] Comparison and verification results: 21 cases of thoracic and abdominal patients were randomly selected using the current commonly used method of affixing gold labels on the body surface and marking them. The results of the first set-up error data analysis were: the minimum and maximum values ​​in the left and right directions were 1mm and 17mm, and 28.6% of them m...

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Abstract

The invention discloses an application of a coordinate method to positioning and posture placing in radiotherapy. The two-dimensional coordinate value relationship between a body surface obvious mark after simulated positioning of a patient recorded or marked on a radiotherapy in vitro coordinate recording board and a positioning marking point is used; during daily treatment, posture placing treatment is performed according to marked irradiation field center point, posture placing treatment can also be performed according to the body surface obvious marker recorded each time and the three-dimensional coordinate value of the treatment center point, and position verification also needs to be performed regularly through a machine-borne verification device. Therefore, through the adoption of the technical scheme disclosed by the invention, a patient suffering tumor does not need to consider the clarity of the treatment marker on the body surface during accepting the radiotherapy, the daily life is not influenced, and normal radiotherapy is not influenced. The accuracy of the treatment position each time can be guaranteed, the treatment posture placing errors are controlled to be 95% trusting degree in the set error threshold range, accurate implementing of a radiotherapy plan is guaranteed, and the radiotherapy effect is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of radiation therapy, and more specifically relates to the application of coordinate method in positioning and positioning in radiation therapy. Background technique [0002] Radiation therapy for oncology, or radiotherapy for short, is the treatment of cancer with radiation. Radiation therapy has experienced more than a century of development history. After Roentgen discovered X-rays and Marie Curie discovered radium, they were soon used in the clinical treatment of malignant tumors. Up to now, radiotherapy is still an important local treatment method for malignant tumors. About 70% of cancer patients need radiotherapy in the course of cancer treatment, and about 40% of cancers can be cured with radiotherapy. The role and status of radiotherapy in tumor treatment is becoming more and more prominent. Radiation therapy has become one of the main means of treating malignant tumors. Radiation therapy is onl...

Claims

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Application Information

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IPC IPC(8): A61N5/10
CPCA61N5/1049A61N2005/1054A61N2005/1061A61N2005/1092
Inventor 谷晓华唐瑞萍谷梦涵詹鸣薛艳玲杨留勤
Owner 新乡市中心医院
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