What is thermal imaging?

Thermal imaging is a detection device that detects infrared energy (heat) through non-contact and converts it into electrical signals, then generates thermal images and temperature values ??on the display, and can calculate the temperature value. The functions of thermal imaging include: early warning of inflammation, early warning of tumors, early warning of peripheral nerve diseases, analysis of other difficult diseases and follow-up of efficacy.

Infrared thermal imaging cameras have two different principles: photon detection and heat detection. The former mainly uses photons to image the electrical effects of semiconductor materials and has high sensitivity, but the temperature of the detector itself will affect it, so it needs to be cooled down. The latter converts heat caused by light into electrical signals and is less sensitive than the former, but does not require refrigeration.

In addition, the thermal imaging camera is also classified according to its working band and the photosensitive material used. Common thermal imaging cameras work at 3-5 microns or 8-12 microns. Commonly used photosensitive materials include lead sulfide, lead selenide, indium telluride, lead tin telluride, cadmium mercury telluride, doped germanium and doped silicon. . Depending on the number and movement of photosensitive elements, there are mechanical scanning, gaze imaging, etc.

Thermal imaging cameras are widely used, especially in the military. Can be used to spot tank engines and soldiers emitting heat at night. In industry, thermal imaging cameras can be used to quickly detect the temperature of workpieces to obtain necessary information. Since faults of electronic components such as motors and transistors are often accompanied by abnormal temperature rises, thermal imaging cameras can also be used to quickly diagnose faults.

In medicine, when diseases such as influenza and pneumonia are prevalent, thermal imaging cameras can be used to quickly determine whether there is fever. Due to the high temperature of cancer cells, it can also be used to assist in the diagnosis of breast cancer and other diseases. It can also be used by border authorities to determine if there are illegal immigrants hiding in vehicles or border areas.

Advantages of thermal imaging inspection

1. Comprehensive system.

Doctors can conduct a comprehensive and systematic analysis of the patient's whole body condition based on clinical reality, overcoming the one-sidedness of other diagnostic techniques that are limited to a certain part. Far-infrared heat maps detect more than 100 diseases such as inflammation, tumors, stones, vascular diseases, nervous system, sub-health, etc., involving common and frequently-occurring diseases in various systems of the human body.

2. "Green" is non-invasive.

Many imaging instruments cause more or less harm to the human body, but far-infrared thermal imaging diagnosis does not produce any rays, so there is no need to label drugs. Therefore, it will not cause any harm to the human body or cause any pollution to the environment, and it is simple and economical. Far-infrared thermal imaging technology realizes mankind's dream of pursuing green health. People vividly call this technology "green physical examination".

3. Conducive to early detection of diseases.

Compared with X-ray, B-ultrasound, CT and other imaging technologies, the most important advantage of far-infrared thermal imaging detection is early warning.

X-ray, B-ultrasound, CT and other technologies have their own characteristics, but they can only be discovered after the disease has formed. Before the tissue structure and morphology of the disease change, cell metabolism will be abnormal and the body's temperature will also change. Temperature, the shape of the temperature field and the temperature difference can reflect the location, nature and extent of the disease.

Far-infrared thermal imaging technology can detect diseases based on the abnormal temperature of the human body, so it can interpret potential risks and identify problems earlier without obvious signs.

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