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病人腰痛到医院去看病,经过医生的问诊检查之后,如果病情不是很明确,大多要进一步做X线摄片和CT检查。X线是肉眼看不见的光线,能够穿透人的身体组织器官,在照相底片上感光,形成影像。由于人体各种组织透光程度不一样,胶片就显示出浓淡参差的影像。将它放在明亮的观片灯前观察,可以看得格外清楚,从中寻找异常或病变的迹象。这就是观灯捉影。
Patients with low back pain to the hospital to see a doctor, after the doctor’s examination, if the condition is not very clear, most of them to do further X-ray and CT examination. X-ray is the naked eye can not see the light, can penetrate the human body tissues and organs, the photographic film on the photosensitive, the formation of images. Due to the different levels of light transmitted through the tissues of the human body, the film shows a shaded image. Looking at it in front of a bright viewer, you can see it clearly and look for signs of abnormality or disease. This is the concept of watching video.