Traditional Culture Encyclopedia - Photography and portraiture - The tube voltage value of soft X-ray photography should be

The tube voltage value of soft X-ray photography should be

The tube voltage value of soft X-ray photography should be ()

A.? Below 20KV

B.? Below 40KV

C.? Below 60KV

D.? Below 80KV

E.? /kloc-above 0/20kV

Answer analysis

B. Less than 40 kV

X-rays generated by tube voltage below 40kV are called soft X-rays because of their long wavelength, low energy and weak ability to penetrate substances. This kind of x-ray photography is called soft x-ray photography.

Soft X-ray photography is suitable for soft tissues with thin tissues and organs, non-overlapping with bones and low effective atomic number, such as breast and lateral larynx, so it is also called soft tissue photography. Breast tumor is one of the important diseases affecting the health of adult women, and breast examination is the main content of soft X-ray photography.