Method for detecting position offset of flat panel detector and radiotherapy device

Abstract

The invention discloses a flat panel detector position offset detection tool, a method and a radiotherapy device. The detection tool includes: a base plate and a column, the base plate is used to be fixed on the flat panel detector, and a plurality of Columns, and multiple columns are evenly distributed on the test surface. The present invention can detect the position offset of the flat panel detector relative to the radiation source when the radiotherapy device frame is at different angles without resorting to high-precision measuring tools, quickly obtain the position offset of the flat panel detector, and the detection tooling structure is simple , easy to install, simple steps in the detection method, and easy to operate.

Description

technical field [0001] The invention belongs to the field of medical technology, and in particular relates to a flat panel detector position offset detection tool, a method and a radiotherapy device. Background technique [0002] Such as figure 2 As shown, modern radiotherapy devices are usually equipped with a flat panel detector, and use this detector to perform electronic portal imaging as a direct basis for whether the patient is correctly positioned. At the same time, this flat panel detector is also used to do some daily mechanical performance testing. The flat panel detector is fixed by a special support arm, and the support arm moves and fixes the flat panel in a special position as required. Whether the position of the flat panel detector is accurate becomes a very important reference parameter. If the reference position If it is inaccurate, the basis for testing the mechanical properties of radiotherapy devices based on flat panel detectors will also be inaccurate...

AI Technical Summary

Problems solved by technology

The flat panel detector is fixed by a special support arm, and the support arm moves and fixes the flat panel in a special position as required. Whether the position of the flat panel detector is accurate becomes a very important reference parameter. If the reference position If it is inaccurate, the basis for testing the mechanical properties of radiotherapy devices based on flat panel detectors will also be inaccurate, resulting in the unreliability of the entire test.

[0003] In the existing technology, the detection of the positioning accuracy of the flat panel detector is carried out by means of high-precision ranging sensors or level instruments. At the same time, the whole process cannot be completed automatically, and a lot of energy and material resources are required for measurement and verification.

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