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在牙齿的X线摄影中,有60～70％是为治疗根管而进行的。为要了解根管内和根尖部的情况,就需进行多次X线摄影,以所得X线片作为依据来探索治疗方案,为此,病人往往要接受较多的辐照剂量。为了减少照射剂量,并且又能方便地看到瞬时图象,就提出了小型齿科X线电视的研制方案。由日本岛津制作所和其它一些单位共同研制成功的齿科X线电视装置,其结构如图1所示。它由X线管装置、影象增强管、电视摄象管、图象存贮装置、电视监视器、X线控
In dental radiography, 60 to 70% is for root canal treatment. In order to understand the condition of the root canal and root apex, several radiographs are needed and the resulting radiographs are used as a basis for exploring the treatment plan, for which patients often receive more radiation doses. In order to reduce radiation dose, and can easily see the instantaneous image, proposed a small dental X-ray television program. Shimadzu Corporation by Japan and other units co-developed a successful dental X-ray television device, the structure shown in Figure 1. It consists of X-ray tube device, image enhancement tube, TV camera, image storage device, TV monitor, X-ray