Radiotherapy target section dose regulating personalized silicone compensator and preparation method thereof

Abstract

The invention relates to a radiotherapy target section dose regulating personalized silicone compensator and a preparation method thereof. The radiotherapy target section dose regulating personalizedsilicone compensator comprises an skin expanding part, a normal tissue expanding part and positioning mark lines. According to conditions of patient's skin in the target section and normal organic contour needed to be protected, silicone comensators in different thickness are customized by the 3D printing technology, so that the compensators fit the skin better; as the compensators have differentthickness, the distances from the surfaces of the compensators in a treatment region to the deep normal tissue are the same, the radiotherapy dose of the target section near the skin can be increasedand the expose dose of the target section can also be unformized by means of dose optimization, and further, the deep normal organs can be protected better to some degrees; thus, the core of the modern precise radiotherapy is achieved, treatment effect is improved and side effect in radiotherapy to patients can also be reduced to the utmost extent. Besides, as medical silicone molding through medical silicone molds is utilized, manufacturing cost is lowered, manufacturing speed is high, and the technique is superior to the method of direct printing of silicone in terms of economical efficiencyand application and promotion.

Description

technical field [0001] The invention relates to the field of medical materials, and in particular provides a personalized silica gel compensator for adjusting the dose of a radiotherapy target area, its preparation method and application. Background technique [0002] In recent years, the incidence of tumors has been increasing. As the three main methods of tumor treatment, radiotherapy has been widely used in clinic because of its small damage, low side effects and remarkable curative effect. The core content of modern precision radiotherapy is the accuracy of radiotherapy dose. Due to the objective existence of radiotherapy build-up effect, tissue compensators are usually needed to adjust the radiotherapy dose when treating superficial target areas. [0003] At present, the traditional tissue compensator (bolus) is general-purpose silica gel, which has a uniform thickness and cannot fit the human skin well. There is a gap between the skin and the skin during treatment, whi...

AI Technical Summary

Problems solved by technology

[0003] At present, the traditional tissue compensator (bolus) is general-purpose silica gel, which has a uniform thickness and cannot fit the human skin well. There is a gap between the skin and the skin during treatment, which aggravates skin damage, and cannot obtain the ideal radiotherapy dose, let alone protect it. purpose of normal organs

A tissue-equivalent compensator for radiotherapy based on 3D printing technology (application number 201610506056.3). Although it can be customized individually, it can solve the problem of skin adhesion, but its thickness is uniform, and it fails to adjust the dose of the target area and protect the deep normal organs. Show its value, and the essence of precision radiotherapy is to give precise therapeutic dose to the target area and give less radiation to normal organs at risk

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