Optical detection system using additional light sources

Abstract

The invention discloses an optical detection system using additional light sources, which is used for detection of isocenter points of radiation equipment and radiotherapy equipment and comprises a detection main unit and a controllable miniaturized laser generator. The controllable miniaturized laser generator comprises a laser light and an emission window for the laser light. The positioning detection main unit comprises a base and a visual probe mounted on the same, a flare induction screen is mounted on the visual probe and capable of moving on the base, and light emitted by the controllable miniaturized laser generator reaches the flare induction screen. The controllable miniaturized laser generator is used as an additional light source used with the detection main unit for detectionof the isocenter points of radiation equipment and radiotherapy equipment, operation is easy, detection is greatly facilitated, a spatial line equation of light beams can be established to obtain theisocenter points of the equipment without using mobile detection systems, detection precision is high, the system is light in equipment weight and small in size, and the detection time is short. The optical detection system is applicable to detection of physical isocenter points of medical radiotherapy equipment.

Description

[0001] This case is a divisional application of the following invention patent: Application number: 201010546220.6 Application date: November 16, 2010 Invention name: A method and device for detecting the central point of radiation and radiotherapy equipment technical field [0002] The invention relates to an optical detection system which utilizes an additional light source to detect the isocenter of light radiation-related equipment, especially medical radiation and radiotherapy equipment. Background technique [0003] Many large-scale equipment need to use beams to simulate their own positioning coordinate system in space, and determine the spatial position of the origin of coordinates by crossing beams, so as to ensure the accuracy and precision of other related supporting equipment in spatial positioning and relative movement. Especially, in the field of medical radiation inspection and radiation therapy, radiation inspection equipment (such as: CT, x-ray simulation pos...

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Problems solved by technology

[0013] 2. Using the detection method of multiple positioning and indirect measurement, it is easy to superimpose new errors

Such as the installation position error of the probe rod 102, the length and deflection error of the probe rod 102, the deflection error of the small machine head 106, etc., they will all affect the calibration offset of the final isocenter point

[0014] 3. There are many manual inspection procedures, long time-consuming, error-prone, high experience requirements for operators, and cannot meet the strict daily inspection frequency

[0015] 4. It can only be qualitative, not quantitative, cannot digitally display the detected errors, cannot track the historical process of error changes, and everyone has a different understanding of the error phenomenon, which is easy to introduce subjective factor deviation

[0016] Using the above method, the process for doctors to verify the positioning accuracy of related equipment will become very cumbersome and tiring

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