Where is high kilovolt photography mainly used for inspection?

This is mainly used for lung examination.

High-kV photography is a medical examination measure to generate high-energy X-rays by using the tube voltage above 120 kV to obtain rich X-ray photos. It is widely used in daily physical examination and clinical examination of lung diseases, especially in the examination, diagnosis and follow-up of silicosis patients, pneumoconiosis screening and epidemiological research.