| 离子X射线管阶段 |
| 添加时间：2018/12/10 16:43:34 浏览次数： |
| 这是X射线设备的早期阶段。当时X射线机的结构非常简单，使用效率很低的含气式冷阴极离子X射线管，运用笨重的感应线圈发生高压，裸露式的高压机件，更没有精确的控制装置。X射线机装置容量小、效率低、穿透力弱、影像清晰度不高、缺乏防护0据资料记载，当时拍摄一张X射线骨盆像，需长达40～60min的曝光时间，结果照片拍成之后，受检者的皮肤却被X射线烧伤。 This is the early stage of X-ray equipment. At that time, the structure of X-ray machine was very simple. The gas-containing cold cathode ion X-ray tube with low efficiency was used. The heavy induction coil was used to generate high voltage. The bare high-voltage machine had no precise control device. The X-ray machine has small capacity, low efficiency, weak penetration, low image clarity and lack of protection. According to the data, it took 40 to 60 minutes to take an X-ray pelvic image at that time. As a result, the skin of the patient was burned by X-ray after the photo was taken. |
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