Radiation field control method and device for medical X-ray system

Abstract

The invention provides a radiation field control method and device for a medical X-ray system. The method comprises the steps that information of a position, in a physics coordinate system, of a real ray shading device in a beam limiting device is obtained; according to the coordinate conversion relation between the physics coordinate system and a radiation field coordinate system and the coordinate conversion relation between the radiation field coordinate system and an image coordinate system, the information of the position of the real ray shading device is converted into the image coordinate system to form a virtual ray shading device, and the plane where the radiation field coordinate system is located is the plane where an X-ray receiver is located; the virtual ray shading device and an end-frame image obtained from spot film photography are combined, and a combined result is displayed in a control mode; according to operation information of a control, the target position of the real ray shading device is determined, and the real ray shading device is controlled to move to the target position to achieve radiation field control over the medical X-ray system. According to the implementation mode, an interest area can be located accurately.

Description

technical field [0001] Embodiments of the present invention relate to the field of medical X-ray technology, and in particular, to a field control method and device for a medical X-ray system. Background technique [0002] The use of X-rays (or "X-rays") for disease inspection and treatment has been widely used in medicine. However, it is generally believed that excessive exposure to X-rays may cause damage to the human body. Therefore, in the process of using medical X-ray systems for related examinations and treatments, the exposure of X-ray beams to patients or related medical personnel should be minimized. For this reason, medical X-ray systems (for example, medical digital X-ray fluoroscopy systems) often use a device called a beam limiter (Collimator) to control the "field" of the X-ray beam, so that only the areas of interest to the doctor are irradiated. Region of Interest (ROI, Region Of Interest) to avoid redundant lines for patients. The beam limiter device usua...

AI Technical Summary

Problems solved by technology

This practice keeps the patient "wired" during beam limiter adjustments, resulting in unnecessary radiation exposure to the patient

At the same time, this method also reduces the work efficiency and the service life of the equipment

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