Human body target positioning device and method

Abstract

The invention relates to a human body target positioning device and method, which are applied to CT (Computerized Tomography) scanning. In the device, an adopted positioning identification rod is a graphite carbon core, and the graphite carbon core serving as the positioning identification rod is further arranged in a groove of a substrate. According to the human body target positioning device provided by the invention, positioning of a head-neck part target and a body part target can be designed on one positioning substrate, so that positioning can be performed more quickly and conveniently at one time during three-dimensional oriented diagnosis or treatment of a patient suffering from body part and head-neck part diseases. The identification rod of the positioning device is made of a readily-available material, and has no scattered ray influence on X-rays or gamma-rays of any energy, so that the positioning accuracy of targets in a human body is increased.

Description

Technical field [0001] The invention relates to a positioning device for radiodiagnostic and radiotherapy instruments, in particular to a human body target positioning device and a positioning method for CT scanning. Background technique [0002] Since the development of stereotactic radiotherapy, the positioning methods are mainly N-shaped positioning marker rods and V-shaped positioning marker rods. The material of the marking rod is mainly carbon fiber, and some use aluminum wire as the marking rod. The disadvantage of carbon fiber is that it cannot be processed into very thin (within 3mm). The thickness of the marking rod directly affects the accuracy of the Z coordinate. Aluminum wire is a kind of metal material, and there is a problem of scattering, which causes the edge of the positioning mark on the CT film to be unclear. Moreover, most of the positioning systems of the N-shaped positioning (or V-shaped positioning) marker rods separate the head and the body, which canno...

AI Technical Summary

Problems solved by technology

The material of the marking rod is mainly carbon fiber, and some use aluminum wire as the marking rod. The disadvantage of carbon fiber is that it is impossible to process it into a very thin (within 3mm), and the thickness of the marking rod directly affects the accuracy of the Z coordinate.

Aluminum wire is a metal material, and there is a problem of scattering, which makes the edges of the positioning marks on the CT film unclear

Moreover, the positioning system of the N-shaped positioning (or V-shaped positioning) marker pole is mostly separated from the head and the body, which cannot meet the needs of fixed-point radiation therapy such as the head and body of lung cancer brain metastases.

[0003] Chinese utility model patent 96246841.X discloses a stereotaxic device, and its positioning marker rods include a set of straight rods with the same length and parallel to the bottom plate of the box body and a straight rod at a certain angle with the above-mentioned parallel rods to form a An N-shaped positioning marker rod, the positioning marker rod is filled with CuSO 4 The plexiglass tube of the solution has a relatively thick diameter, and the positioning effect is not ideal, and it is also impossible to perform one-time positioning of the body and head and neck

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