Tissue equivalent replenisher for radiotherapy and preparation method thereof

A tissue equivalent and radiation therapy technology, applied in X-ray/γ-ray/particle irradiation therapy, etc., can solve the problems of inability to adhere to the skin, uncertainty of tumor dose, inability to adhere to the skin, etc., and achieve the effect of reducing damage

Active Publication Date: 2016-10-26
北京启麟科技有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

One of the depth dose distribution characteristics of different energy rays is that the surface dose decreases with the increase of the ray energy, and the depth of the maximum dose point and the percentage depth dose (maximum dose point) increase. The depth from the surface to the maximum dose point is the dose built-up area, because This characteristic leads to the superficial target dose not reaching the expected dose when intensity-modulated radiation is applied to superficial tumors
For this reason, compensation membranes are often used in clinical radiotherapy to increase the dose in the superficial area of ​​​​the tumor, but the default compensation membrane in the general planning system is close to the skin, but the compensation membr

Method used

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  • Tissue equivalent replenisher for radiotherapy and preparation method thereof
  • Tissue equivalent replenisher for radiotherapy and preparation method thereof
  • Tissue equivalent replenisher for radiotherapy and preparation method thereof

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preparation example Construction

[0023] The preparation method of tissue equivalent compensator for radiotherapy includes the following steps:

[0024] Step 1: The doctor determines the skin area that needs to be customized tissue equivalent compensation according to the scope of the patient's need for radiotherapy;

[0025] Step 2: The doctor scans the skin part through a CT scanner, obtains a CT image of the skin part, and transmits the CT image to the workstation;

[0026] Step 3: The workstation constructs a three-dimensional contour model of the skin part according to the received CT images and generates a data file of the three-dimensional contour model, and sends the data file to a 3D printer;

[0027] Step 4: The doctor determines the thickness of the printed tissue equivalent compensator according to the patient's radiation therapy dose requirements. When the patient needs radiotherapy at the site 5mm subcutaneously and the radiation dose is 15mm deep, add the tissue equivalent compensator to maximize The do...

Embodiment 1

[0032] A preparation method of tissue equivalent compensator for radiotherapy includes the following steps:

[0033] Step 1: When the patient's radiotherapy site is located in the neck, the doctor determines the skin site that needs to be customized with tissue equivalent compensation according to the range of radiotherapy required by the patient;

[0034] Step 2: The doctor scans the chest wall with a CT scanner, obtains a CT image, and transmits the CT image to the workstation;

[0035] Step 3: The workstation constructs a three-dimensional contour model of the skin part according to the received CT images and generates a data file of the three-dimensional contour model, and sends the data file to a 3D printer;

[0036] Step 4: The doctor determines that the thickness of the printed tissue equivalent compensation is 5mm according to the dose requirements of the patient's radiotherapy treatment, and inputs the thickness of 5mm to the 3D printer;

[0037] Step 5: The 3D printer receives...

Embodiment 2

[0039] A preparation method of tissue equivalent compensator for radiotherapy includes the following steps:

[0040] Step 1: When the patient's radiotherapy site is located on the chest wall, the doctor determines the skin site that needs to be customized with tissue equivalent compensation according to the scope of the patient's need for radiotherapy;

[0041] Step 2: The doctor scans the chest wall with a CT scanner, obtains a CT image, and transmits the CT image to the workstation;

[0042] Step 3: The workstation constructs a three-dimensional contour model of the skin part according to the received CT images and generates a data file of the three-dimensional contour model, and sends the data file to a 3D printer;

[0043] Step 4: The doctor determines that the thickness of the printed tissue equivalent compensation is 7.5mm according to the dose requirements of the patient's radiotherapy treatment, and inputs the thickness 7.5mm to the 3D printer;

[0044] Step 5: The skin surface ...

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Abstract

The invention relates to a tissue equivalent replenisher for radiotherapy and a preparation method thereof. The preparation method comprises: a doctor determines a skin part needing tissue equivalent replenisher customization according to a range needing radiotherapy of a patient; the doctor uses a CT scanner to scan the skin part, obtains a CT image, and transmits the CT image to a work station; the work station constructs a three-dimensional contour model of the skin part based on the CT image, generates a data file, and sends the data file to a 3D printer; the doctor determines the tissue equivalent replenisher thickness based on a dosage requirement of the radiotherapy for the patient and inputs the thickness value into the 3D printer; and the 3D printer receives the data file and the e thickness value in of the tissue equivalent replenisher and selects materials for printing and preparation, thereby obtaining the tissue equivalent replenisher. According to the method, no gap is formed between the tissue equivalent replenisher and the skin of the human body based on individual customization; and thus the injury of the skin due to a secondary building effect caused by a high-energy ray in the gap during a radiotherapeutic process can be reduced.

Description

Technical field [0001] The invention relates to the preparation of a radiotherapy tissue equivalent compensator, in particular to a radiotherapy tissue equivalent compensator based on 3D printing technology and a preparation method thereof. Background technique [0002] The rapid development of modern radiotherapy technology has been widely used clinically. Radiotherapy uses high-energy X-rays, and after high-energy rays enter the human body, there is a dose built-up area, and the dose after the built-up area is the actual dose that acts on the human body. Since one of the characteristics of the depth dose distribution of different energy rays is that the surface dose decreases as the ray energy increases, the maximum dose point depth and the percentage depth dose (maximum dose point) increase, and the depth from the surface to the maximum dose point is the dose built-up area. This feature causes the superficial target area dose to fail to reach the expected dose when superficia...

Claims

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Application Information

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IPC IPC(8): A61N5/10
Inventor 李硕
Owner 北京启麟科技有限公司
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