An epid control device for a medical electron linear accelerator

Abstract

The invention discloses an EPID control device for a medical electron linear accelerator. The EPID control device comprises a carrying mechanism for mounting an EPID on the medical electron linear accelerator, a central position detecting unit, and a control unit connected with a host computer. The carrying mechanism is provided with an adjusting mechanism for mounting the EPID and driving the EPID to move horizontally or vertically. The adjusting mechanism is provided with a driving component equipped with a position feedback unit. The central position detecting unit is disposed at a centralposition corresponding to the EPID and below the EPID, is configured to detect whether the EPID moves to a central position. The driving component and the position feedback unit of the adjusting mechanism and the central position detection unit are all connected to the control unit. The EPID control device can automatically correct the central position of the EPID, and can fine adjust the centralposition of the EPID to ensure the accuracy of the central position and accurately position the EPID.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to an electronic imaging flat panel detector (EPID) control device of a medical electron linear accelerator (RT). The invention also relates to the EPID control method of the medical electron linear accelerator. Background technique [0002] With the continuous improvement of the functional integration of medical electron linear accelerators, the clinical application of medical electron linear accelerators has become more and more extensive, and the component-level sub-equipment with corresponding functions has also increased and enriched, especially those equipped with X-ray diagnostics. The EPID function of the equipment enriches the breadth and depth of RT diagnosis and treatment. [0003] The function of the EPID added to the medical electron linear accelerator is to generate high-energy X-ray beams through the treatment head or the beam limiter device, and the energy...

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Problems solved by technology

[0006] The traditional method is to adjust the EPID by artificial means to carry out "centering" correction, so as to ensure the accuracy of the feed in place. Due to the human factors involved, it is more cumbersome from an intuitive point of view, because it is necessary to manually judge whether the position is accurate or not. Use a tape measure to measure the position to determine whether it is in place accurately, which cannot guarantee the accuracy of the calibration, and cannot automatically obtain information from the host computer interface whether it has actually reached the specified position, which will reduce the work efficiency and detection performance of EPID, and affect the follow-up treatment and diagnosis of

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