Why can't it be called a molybdenum drone?

We don't approve of using the word "molybdenum target" to describe the current mammography in reports, lectures, papers and books! In the 1960s, the X-rays produced by low-kV molybdenum targets not only have the principle of bremsstrahlung, but also have the principle of marking rays. With the increase of energy, the composite X-ray produced by molybdenum target coincides perfectly with the S-shaped photosensitive characteristic curve of the film, and then mammography is carried out by using molybdenum metal as the X-ray machine on the anode target surface of the tube. But with the birth of DR in this century, amorphous selenium plate has replaced film as the main imaging substance of breast. It has been found that the photosensitive characteristic curve of flat plate is a straight line from low to high, and the X-ray produced by molybdenum target can't match it perfectly. On the contrary, the X-rays produced by the tungsten target at low kilovolts are mainly the single bremsstrahlung rays arranged in a straight line from low energy to high energy, which is just the most suitable for the flat plate and fully reflects the wide dynamic range of the flat plate. Moreover, the voltage kilovolt can be appropriately increased to make its penetrating power stronger than X-ray of molybdenum target, which leads to the enhancement of Compton effect and the weakening of photoelectric effect, and the radiation dose absorbed by patients is lower than that of molybdenum target equipment (it can also be understood that in recent years, the manufacturer using tungsten target first introduced digital three-dimensional cross-sectional synthetic imaging technology (DBT). Although GE Company put forward the concept of cross-sectional synthesis long ago, it only introduced clinical practical cross-sectional synthetic technology products, without tungsten target or molybdenum target. At present, in addition to GE using molybdenum and rhodium double targets (note that molybdenum targets are not used alone), other well-known breast X-ray camera manufacturers all use tungsten targets on amorphous selenium plates, and these breast X-ray inspection equipment has nothing to do with molybdenum targets! It is suggested that the equipment should not be named after the anode target of the machine, and the standardized vocabulary of "mammography" should be restored. Its mbth is mammography, and the word consists of two parts: mammo means breast, which comes from the word "mother". Almost all the spoken languages used to address mothers in the world use horse, mo and reduplication, which can be extended to nursing (or feeding babies), and the corresponding mother organ is mammary gland (breast); Geography means photography and imaging. Together, it is a mammogram. Because the word x-ray is used for the first time, although the word itself does not contain the meaning of x-ray, it refers to: mammography. (He Zhiyan, Department of Radiology, First People's Hospital Affiliated to Shanghai Jiaotong University)