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Tracking marker for stereotactic radiation therapy (SRT)

A radiotherapy and stereotaxic technology, applied in the field of medical devices, can solve the problems of position drift, lack of positioning auxiliary markers, no reports, etc., and achieve the effect of improving accuracy, improving comprehensive treatment effect, and achieving remarkable effect.

Inactive Publication Date: 2016-01-20
SECOND MILITARY MEDICAL UNIV OF THE PEOPLES LIBERATION ARMY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are radiotherapy tracking markers made of pure gold materials on the market, but their simple cylindrical structure is easy to cause position drift after implantation, and most of the current products are made of X-ray sensitive materials. For the use of nuclear magnetic resonance (MRI ) radiation equipment for auxiliary positioning lacks effective positioning auxiliary markers
Therefore, there is an urgent need for a marker that is not easily displaced after implantation, has high identifiability, and can be applied to MRI radiotherapy technology to improve the accuracy of image positioning and ultimately achieve the goal of improving the effect of comprehensive radiation therapy. Stereotactic radiotherapy tracking markers have not been reported yet

Method used

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  • Tracking marker for stereotactic radiation therapy (SRT)
  • Tracking marker for stereotactic radiation therapy (SRT)
  • Tracking marker for stereotactic radiation therapy (SRT)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1 Stereotactic radiotherapy tracking marker of the present invention (1)

[0028] See figure 1 , figure 1 It is a structural schematic diagram of a stereotactic radiotherapy tracking marker of the present invention. The stereotaxic radiotherapy tracking marker is provided with a main body 1 and an identification body 2 . The body 1 is a cylindrical structure, and the marker body 2 is connected to one end of the body 1 and is a cylindrical structure with an external thread 21 on the surface, and the major diameter is equal to the diameter of the body 1 .

[0029] Specifically, the specifications of the stereotactic radiotherapy tracking marker in this embodiment are: the length of the main body 1 is 3 mm, and the length of the marker 2 is 3 mm. But it doesn't stop there.

Embodiment 2

[0030] Example 2 Stereotactic radiotherapy tracking marker of the present invention (2)

[0031] See figure 2 , figure 2 It is a structural schematic diagram of another stereotactic radiotherapy tracking marker of the present invention. The stereotaxic radiotherapy tracking marker is provided with a main body 1 and an identification body 2 . The main body 1 is a cylindrical structure, and a marker body 2 is provided at each of its two ends. Each identification body 2 is a cylindrical structure with an external thread 21 on the surface, and the major diameter is equal to the diameter of the main body 1 .

[0032] Specifically, the specifications of the stereotactic radiotherapy tracking markers in this embodiment are: the length of the main body 1 is 6 mm, and the length of each marker 2 is 2 mm. But it doesn't stop there.

Embodiment 3

[0033] Example 3 Stereotactic radiotherapy tracking marker of the present invention (3)

[0034] See image 3 , image 3 It is a structural schematic diagram of another stereotactic radiotherapy tracking marker of the present invention. The stereotaxic radiotherapy tracking marker is provided with a main body 1 and an identification body 2 . The main body 1 is a cylindrical structure, and a marker body 2 is provided at each of its two ends. Each marker 2 is a helically wound filamentary structure with a radial twist of 30-50° and gaps between adjacent filaments.

[0035] Specifically, the specifications of the stereotactic radiotherapy tracking markers in this embodiment are: the length of the main body 1 is 6 mm, and the length of each marker 2 is 3 mm. But it doesn't stop there.

[0036] Regarding the above examples 1-3, it should be noted that the marker 2 is provided with an external thread or designed as a helically wound filamentary structure, these structures allow...

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Abstract

The invention relates to a tracking marker for the stereotactic radiation therapy (SRT). The tracking marker comprises a body. One end or the two ends of the body is / are provided with an identification body. The identification body is provided with a shape / structure that produces friction with a focus tissue, wherein the shape / structure can be in the form of a cylindrical / helically wound filiform texture with an external thread. According to the technical scheme of the invention, the tracking marker for the SRT is made of the MRI-sensitive polymer material. Meanwhile, the tracking marker is characterized in that one end or both ends of the body is / are provided with the identification body of a special-shaped structure, so that the tracking marker is higher in distinguishing degree in image after the implanting process. At the same time, the tracking marker is not easy to shift, so that the image positioning accuracy is improved. Finally, the comprehensive treatment effect of the precise radiation therapy is increased. Moreover, the tracking marker can be applied to the precise radiation therapy based on the MRI positioning mode.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a stereotactic radiotherapy tracking marker. Background technique [0002] In recent years, with the continuous advancement of radiotherapy technology, image-guided precision radiotherapy (IGRT) has gradually become one of the main research directions in the field of radiotherapy, and has been widely applied and promoted. In order to ensure the precise tracking of the tumor location by imaging equipment, multiple image-sensitive tracking markers are usually implanted into and around the tumor by puncture before radiotherapy, in order to improve the tracking accuracy of the equipment and ultimately improve the radioactivity. treatment effect. [0003] At present, there are radiotherapy tracking markers made of pure gold materials on the market, but their simple cylindrical structure is easy to cause position drift after implantation, and most of the current products are m...

Claims

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Application Information

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IPC IPC(8): A61N5/00
Inventor 张火俊王晓艳居小萍江林宫曹飞清水汪贾臻方芳沈钰新陈迪
Owner SECOND MILITARY MEDICAL UNIV OF THE PEOPLES LIBERATION ARMY
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