Precise fine tuning method and device based on binocular verification in head radiotherapy positioning

A technology for fine-tuning device and head, applied in radiation therapy, X-ray/γ-ray/particle irradiation therapy, treatment and other directions, which can solve the problems of difficulty in correcting rotation errors and correcting positioning errors.

Pending Publication Date: 2021-09-14
JIAXING NO 1 HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the image verification before each treatment brings extra radiation dose to normal tissues, and the correction of rotation error is very difficult in practice
[0006] To sum up, accurate positioning is required in head radiotherapy to improve the treatment effect and reduce side effects. At present, even if image verification is performed before each radiotherapy, it is difficult to correct the positioning error to a greater extent due to the existence of rotation error.

Method used

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  • Precise fine tuning method and device based on binocular verification in head radiotherapy positioning
  • Precise fine tuning method and device based on binocular verification in head radiotherapy positioning

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Effect test

Embodiment 1

[0030] Embodiment 1, a precise fine-tuning method based on binocular verification in head radiotherapy positioning.

[0031] see figure 1 , the method includes the steps of:

[0032] S1. When the patient is positioned for radiotherapy, after the routine mask making is completed, a visual aiming point is set in front of both eyes, and then two visual reference points are set forward;

[0033] S2. Instruct the patient to relax and remove the mask, keep the head still, and move the spatial position of the reference point so that the left and right eyes coincide with their respective reference points when viewing the aiming point;

[0034] S3. Record the spatial position of the aiming point and the moved reference point in the laser positioning coordinate system, and copy it to the laser positioning coordinate system during the positioning before treatment;

[0035] S4. After routine positioning before radiotherapy, instruct the patient to relax and remove the mask, and make the...

Embodiment 2

[0039] Embodiment 2, a precise fine-tuning device based on binocular verification in head radiotherapy positioning.

[0040] see figure 2 , the device consists of:

[0041] Laser aiming point (1), target reference circle (2), high-definition display screen (3), six-dimensional adjustment platform (4), laser transmitter (5), two-dimensional adjustment platform (6), controller (7) , a telescopic bracket (8), an atomizer (9), a three-dimensional coordinate system (10), a bed board (11), a fixed panel (12), a headrest (13), and a mask (14).

[0042] Preferably, the laser emitter (5) is installed on the two-dimensional adjustment platform (6) fixed on the walls on both sides, through the two-dimensional adjustment of the platform and the adjustment of the laser emission angle of the emitter itself, two horizontal laser beams can be realized The beams intersect at 90 degrees, and the point of intersection is defined as the laser aiming point (1).

[0043] Preferably, the naked e...

Embodiment 3

[0049] Embodiment 3, a method of using a precise fine-tuning device based on binocular verification in head radiotherapy positioning.

[0050] see figure 2 , the specific use of the device includes the following steps:

[0051] The first step is to install the device in the CT simulation positioning room and radiotherapy room.

[0052] In the second step, the patient undergoes routine radiotherapy positioning, lies supine on the bed board (11), selects a conventional suitable headrest (13), installs the headrest on the fixed panel (12), completes the production of the mask (14) routinely, and depicts it on the mask The laser projection of the three-dimensional coordinate system (10) completes the spatial positioning of the mask. By adjusting the emission angles of the two-dimensional adjustment platform (6) and the laser transmitter (5) fixed on both sides of the wall, two horizontal laser beams intersect at 90 degrees in front of the patient's eyes, and the intersection po...

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Abstract

The invention discloses a precise fine tuning method and device based on binocular verification in head radiotherapy positioning. The method comprises the following steps: setting a naked eye visual aiming point in front of two eyes of a patient, and then setting two naked eye visual reference points in front; keeping the head of the patient still, and enabling the left eye and the right eye to coincide with respective reference points by moving the spatial positions of the reference points when the left eye and the right eye view the aiming point respectively; recording the spatial positions of the aiming point and the moved reference points in a laser positioning coordinate system, and copying the spatial positions to the laser positioning coordinate system during positioning before treatment; after positioning before radiotherapy, enabling the left eye and the right eye to coincide with the respective reference points through displacement and rotation of the head of the patient when viewing the aiming point respectively. The device comprises the laser aiming point, a target-shaped reference ring, a high-definition display screen, a six-dimensional adjusting platform, a laser transmitter, a two-dimensional adjusting platform, a controller, a telescopic bracket, an atomizer, a three-dimensional coordinate system, a bed board, a fixed panel, a headrest and a mask. According to the invention, displacement errors and rotation errors in radiotherapy positioning can be rapidly and effectively corrected, and accurate radiotherapy is realized.

Description

technical field [0001] The invention relates to the technical field of radiotherapy positioning, in particular to a precise fine-tuning method and device based on binocular verification in head radiotherapy positioning. Background technique [0002] Radiation therapy is an important means of tumor treatment. The accuracy of positioning and positioning is closely related to the curative effect. Strict control of positioning and positioning errors can not only improve the accuracy of tumor treatment, but also reduce the response of normal tissues. In head radiotherapy, due to the compact anatomical structure and many important organs at risk, excessive positioning errors not only lead to tumor recurrence and metastasis, but also lead to fatal consequences due to excessive doses to the important central nervous system. Therefore, in the current head radiotherapy, the head is basically fixed by a mask combined with mechanical fixation, and then the consistency of each positionin...

Claims

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Application Information

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IPC IPC(8): A61N5/10
CPCA61N5/1001A61N5/1049A61N5/1069A61N2005/105
Inventor 周懂杰
Owner JIAXING NO 1 HOSPITAL
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