What is the basis of X-ray projection?

The basic knowledge of X-ray projection is introduced as follows:

Basic knowledge of x-ray photography

X-ray photography is a common medical imaging technology, which is widely used in clinical diagnosis and disease treatment. This paper will introduce the basic knowledge of X-ray photography, including its principle, equipment and common applications.

First, the principle of X-ray photography

X-ray photography is to obtain the image of the internal structure of a human body or an object by taking advantage of the different penetration and absorption abilities of tissues to X-rays. X-ray is electromagnetic radiation produced by the interaction of high-speed electrons and substances, which has penetrability and visibility, so it can be used for imaging.

Second, X-ray photographic equipment

X-ray photography mainly includes X-ray generator and X-ray detector. X-ray generator is a device for generating X-rays, which usually consists of X-ray tube, high-voltage generator and control system. The X-ray tube applies high voltage to the anode, which accelerates electrons between the anode and the cathode to produce X-rays. X-ray detector is used to receive and measure X-rays passing through the inspected object, such as fluorescent screen, photosensitive film and digital detector.

Third, the application of X-ray photography.

1. Clinical diagnosis: X-ray photography plays a vital role in clinical diagnosis. X-ray photography can be used to observe the abnormalities of bones, joints, organs and blood vessels, and can help doctors judge the location, nature and degree of lesions. Common clinical applications include fracture, pulmonary infection, examination of chest and abdomen organs, etc.

2. Treatment guidance: X-ray photography can also be used as a guiding tool for treatment. Before the operation, the doctor can determine the operation plan and the position of the operation through X-ray photography; During the operation, doctors can observe the progress of the operation in real time through X-ray photography to ensure the accuracy and safety of the operation.

3. Object detection: X-ray photography is also widely used in the security field. For example, in airport security inspection, security personnel use X-ray machines to check passengers' luggage to find potential dangerous goods; In industrial production, X-ray photography can be used to detect the quality and internal defects of products.

Four. Matters needing attention in x-ray photography

1. Protective measures: X-rays have certain radiation damage to human body, so when taking X-ray photography, it is necessary to take protective measures, such as wearing lead clothes and protective glasses, to reduce the radiation damage to human body.

2. Preparation before examination: Before X-ray photography, doctors need to be informed of their own medical history, pregnant women's situation and possible allergic history, so that doctors can make appropriate adjustments and arrangements according to their personal circumstances.

3. Inspection process: During X-ray photography, you need to follow the doctor's instructions, keep your body posture stable, and don't move at will. At the same time, you should cooperate with the doctor to take a deep breath or hold your breath to get a clearer image effect.