胸片阅读与心影变化
谭洪毅
X-rays- describe radiation which is part of thespectrum which includes visible light, gamma rays and cosmic radiation.Unlike visible light, radiation passes through stuff.When you shine a beam of X-Ray at a person and put a film on the other side of them a shadow is produced of the inside of their body.
Different tissues in our body absorb X-rays at different extents:Bone- high absorption (white)Tissue- somewhere in the middle absorption (grey)Air- low absorption (black)