Why do doctors always go to a room alone when they go to the hospital to take pictures?

The photo you are talking about is X-ray photography. X-ray is actually an electromagnetic wave with extremely short wavelength and great energy (discovered by German physicist Roentgen in 1895). The wavelength of X-rays used in medicine is about 0.001-0.1nm (the ability of X-rays to penetrate substances is related to the energy of X-ray photons. The shorter the wavelength of X-ray, the greater the photon energy and the stronger the penetrating power. X-ray penetration is also related to the density of matter. The matter with high density absorbs more X-rays and transmits less. Low density absorbs and permeates more). X-ray machine will produce a large number of scattered rays when it works, which have penetrating and ionizing effects on human body. Long-term radiation can cause hair loss, skin burns, visual impairment, leukemia, carcinogenesis and reproductive function. So the doctor will go to a room alone, mainly for protection, followed by surgery.