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腮晚造影曲面体层摄影，对腮腺疾病的诊断具有独特的优点，[吴运堂等.中华口腔医学杂志.199328：12．]。但我们发现常规的摄影方法可出现造影的腮腺与颈椎有明显的重叠，腮腺的后端部分易被截除在X线视野外。我们自1996年4月至1997年7月，对21例腮腺造影用改良的方法作曲面体层
Radiographic surface tomography glands, the diagnosis of parotid gland disease has unique advantages [Wu Yun Tang et al. Chinese Journal of Stomatology .19328: 12. ]. However, we found that conventional imaging method can occur in the parotid gland and cervical spine imaging significant overlap, the parotid gland is easy to be cut off in the X-ray field. From April 1996 to July 1997, we performed a modified method of parotid glandography on 21 parotid glands