The nominal maximum X-ray tube voltage of mammography equipment shall not exceed.

The nominal maximum voltage of the X-ray tube of mammography equipment shall not exceed 50KV.

Mammography is a common imaging examination method to detect breast diseases, and mammography equipment is a key tool for mammography. In breast X-ray equipment, X-ray tube is the key component to generate X-rays, and its voltage directly affects the energy and penetration ability of X-rays generated.

X-ray is a kind of ionizing radiation, which has a certain risk of radiation damage to human body. Although in general, the radiation dose produced by breast X-ray equipment is relatively low, long-term or large-dose radiation exposure may still cause harm to human body, such as skin redness, inflammation, DNA damage and so on.

X-ray tube will be affected by current, magnetic field and other factors in the working process, which will lead to changes in its internal structure and further affect its service life. Excessive voltage will accelerate this change and shorten the service life of X-ray tube.

Common mammography equipment includes digital mammography system (DR), digital mammography camera (DM), digital mammography system and traditional mammography camera.

1, Digital Mammography System (DR): This equipment uses digital technology to convert X-ray images into digital images, which can generate reports more quickly. The advantage of DR system is that it can automatically adjust shooting conditions, such as angle and pressure, to obtain the best imaging effect. In addition, the DR system can also provide real-time image display, which is convenient for doctors to observe and diagnose.

2. Digital Mammography Camera (DM): This equipment uses a molybdenum target detector to capture X-ray images. The advantage of DM system is high imaging quality, which can clearly display the structure of breast tissue. However, the disadvantage of DM system is that the operation is relatively complicated and needs professional technicians to operate and maintain it.

3. Digital mammography system: This equipment combines mammography and mammography, and can display two-dimensional and three-dimensional images of breast at the same time. The advantage of digital mammography system is that it can provide more comprehensive breast information and help doctors diagnose breast diseases more accurately.

4. traditional mammography camera: this equipment uses film or electronic photosensitive plate to shoot x-ray images. Although the traditional mammography camera was widely used in the past, it was gradually replaced by digital equipment because of its complicated operation, limited imaging quality and environmental problems.