What is high-pressure photography?

What is the application value? High kV photography is chest photography, and the value is 100 ~ 120 kV. If the performance of the machine allows, it can be increased to above 150KV. High kV photography has the following advantages:

With the increase of (1) voltage, the wavelength of X-ray becomes shorter and the penetrating power becomes stronger, which narrows the difference of X-ray absorption between tissues, increases the level of image, and correspondingly expands the ability and scope of X-ray diagnosis.

(2) High-kilovolt photography can clearly show high-density images or structures in overlapping tissue structures, such as finding a mass through a large area of consolidated lung tissue and penetrating the tissue overlapping with mediastinum to understand trachea and bronchus. , can play the role of tomography.

(3) The milliampere-second value of high kilovolt photography is correspondingly reduced, which can reduce the load of the X-ray tube. Extend the service life of X-ray machine.

The disadvantages of high kv photography are: there are many scattered lines, and a line filter should be used when shooting; Using small focus projection can improve the clarity of the image.