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随着多层螺旋CT(MSCT)在口腔领域的广泛应用,公众对放射卫生和自身防护意识也在不断提高,目前国外已有对牙齿CT低剂量扫描的研究,X线危害尤其对于小儿,年龄越小致癌危险越大[1]。普通颌全景X线牙片与牙成像相比具有辐射剂量低,价格便宜等特点,属牙齿检查的首选方法。但部分病人病情复杂,解剖结构及病变组织前后重叠,普通颌全景X线牙片很难去除对诊断有碍的组织,造成对病变部位的遮
With the widespread application of MSCT in the oral cavity, public awareness of radiation hygiene and self-protection is also increasing. At present, studies on low-dose CT scanning of foreign countries have been carried out. The X-ray hazards are especially relevant for children, age The smaller the risk of cancer more [1]. General jaw panoramic X-ray teeth compared with dental imaging with low radiation dose, low prices and other characteristics, is the preferred method of dental examination. However, some patients with complex conditions, anatomical structures and lesions before and after the overlap, the general jaw panoramic X-ray is difficult to remove the diagnosis of obstruction of the organization, resulting in the lesion cover