Fuzzy prediction method and predictor for position signal of respiration synchronous tracking system

A technology of synchronous tracking and fuzzy prediction, which is applied in the fields of instruments, radiotherapy, special data processing applications, etc.

Inactive Publication Date: 2010-08-04
JIANGSU RAYER MEDICAL TECH GO LTD
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Problems solved by technology

[0008] Aiming at the deficiencies of the prior art, the present invention provides a new method for predicting the position signal of a synchronous tracking system based on a fuzzy algorithm to solve some difficult problems existing in the prior art, and provides a synchronous tracking method for radiotherapy a new way

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  • Fuzzy prediction method and predictor for position signal of respiration synchronous tracking system
  • Fuzzy prediction method and predictor for position signal of respiration synchronous tracking system
  • Fuzzy prediction method and predictor for position signal of respiration synchronous tracking system

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Embodiment Construction

[0063] A preferred embodiment of the present invention is given below and described in detail to enable better structural features and functions of the present invention, instead of limiting the scope of protection of the claims of the present invention.

[0064] Such as figure 1 As shown, the device of the present invention includes a data acquisition module, a computer, a power amplifier, a driving circuit and an action mechanism. The data collector stores the position of the first 30,000 points collected and the position data of the tumor in the body at that time into the computer, and calculates the corresponding speed parameters (dx, dy, dz) according to the position parameters and stores them in the computer :

[0065] dx i + 1 = x i + 1 - x i t i + 1 - t i

[0066] dy i + 1 = y i + 1 - y i t i + 1 - t i

[0067] dz i + 1 = z i...

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Abstract

When used for treatment ray projection, a respiration synchronous tracking system can monitor the respiration of a patient and compensate tumor target movement. Time delay exists between the command and the response of the treatment ray projection system, and the delay can cause accidental even dangerous vibration. In order to increase the performance of synchronous tracking, the signal prediction technology can be used for making up the time delay. The invention provides a fuzzy new prediction method and a predictor for a position signal of a new synchronous respiration tracking system. The predictor can handle the problem of the amplitude and the frequency changing along with time, and well solve the problem of synchronous tracking during radiation therapy.

Description

Technical field [0001] The invention relates to a prediction method and a predictor of a position signal, in particular to a fuzzy prediction method of a position signal of a breathing synchronization tracking system and a predictor designed according to this method. Background technique [0002] Radiotherapy (radiotherapy for short) has been widely used in clinical medicine and has become one of the main methods for the treatment of malignant tumors. The goal of precision radiotherapy is to maximize the killing of tumor cells and effectively protect surrounding normal tissues and vital organs. Studies have shown that for every 1% increase in dose accuracy, the cure rate can increase by 2%. Therefore, it is very important to improve the accuracy of radiotherapy. [0003] Breathing causes the movement of the surface outside the body (chest / abdomen), but also the movement of tumors in the body (tumors in the lungs, liver and pancreas). Tumors in the body are affected by breathing a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00A61N5/00
Inventor 盛晔
Owner JIANGSU RAYER MEDICAL TECH GO LTD
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