Shielding device based on light field of ray focuser and shielding method and X-ray inspection device

Abstract

The invention discloses a shielding device based on the light field of a ray focuser and a shielding method and an X-ray inspection device. The X-ray shielding method comprises the following steps: confirming an X-ray inspected area of a subject by adjusting the light field of visible light emitted from an X-ray emitting device; and adjusting a shielding plate of a shielding device between the X-ray emitting device and the subject, wherein the shielding plate stops moving when a light sensing module which moves with the shielding plate synchronously confirms the area of the light field of thevisible light, the size of a light permeable hole formed by the shielding plate is accordant with the area of the light field of the visible light, and thus the size of a light permeable hole of the shielding device is accordant with the area of a radiation field of X-rays. By adopting the device and method, the size of the light permeable hole of the shielding device can be automatically adjustedthrough the light field of the visible light, so that the size of the light permeable hole of the shielding device is accordant with the area of the radiation field of the X-rays, and no operation step is increased for an operator of an X-ray inspection device.

Description

technical field [0001] The invention relates to the field of medical radiation protection, in particular to an X-ray shielding device based on the beam field, an X-ray shielding method and an X-ray inspection device. Background technique [0002] X-ray machines are the most commonly used medical imaging equipment in various hospitals. The biggest advantage of the X-ray machine is that it has a very wide range of applications. It can image almost all human tissues, such as bones, skulls, chest lungs, joints, etc., and it is very convenient to use, and the imaging time is short. The requirements for equipment operators are also relatively low, and the purchase and maintenance costs are also relatively low. In contrast, ultrasound equipment cannot perform bone, head, chest and lung examinations; although MRI can also examine most human tissues, the equipment is large, costly, takes a long time, and has a relatively low spatial resolution. But the X-ray machine also has its ob...

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Problems solved by technology

And if it is necessary to take a chest film, the operator of the X-ray machine will use the beam device that comes with the X-ray machine to limit the X-rays to only irradiate the chest of the subject.

Although only the subject's chest will be directly exposed to X-rays, X-rays will have a lot of scattered X-rays during imaging, and these scattered X-rays will be exposed when the X-ray protection is not in place. Scatter to the subject's eyes, skull, lymph, gonads and other parts that are very sensitive to X-rays, thus adversely affecting the health of the subject

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