数字化断层融合技术在颌骨病变中的应用研究  

Application research of digital tomosynthesis in jaw lesions

作　　者：梁昌富[1] 李建军[1] 陈旺生[1] 刘富金[2] 王鸿[3] 赵应满[1] 

机构地区：[1]海南省人民医院放射科,海南海口570311 [2]海南省人民医院病理科,海南海口570311 [3]海南省人民医院口腔颌面外科,海南海口570311

出　　处：《海南医学》2015年第6期831-834,共4页Hainan Medical Journal

基　　金：海南省卫生厅科研立项项目(编号:琼卫2012PT-18.);国家临床重点专科建设项目经费资助

摘　　要：目的探讨数字化断层融合(TOMOS)技术在口腔有固定金属假牙的颌骨病变中的应用价值,并与多层螺旋CT(MSCT)进行对照。方法回顾分析口腔有固定金属假牙患者的TOMOS及MSCT的影像资料,每组各25例,观察曝光时间、患者受辐射剂量及对病灶的显示情况,并进行统计学分析。结果 TOMOS组的曝光时间为(0.700±0.050)s,明显少于CT组的(6.267±0.709)s,两组比较差异具有显著统计学意义(t=7.912,P<0.01);TOMOS组患者受辐射有效剂量为(0.033±0.004)m Sv,明显低于CT组的(1.667±0.537)m Sv,两组比较差异具有显著统计学意义(t=11.812,P<0.01);对下颌角及升支病变显示,TOMOS明显优于MSCT。结论 TOMOS检查方法实用、便捷,其辐射剂量不到CT的2%,在有金属假牙者的下颌角及升支病变的检查优势明显,可部分代替CT检查。Objective To investigate the practical value of digital tomosynthesis（TOMOS） in jaw lesions with oral fixed metal dentures, in comparison with multi-slice spiral CT（MSCT）. Methods The imaging findings of patients with oral fixed metal dentures scanned by TOMOS（TOMOS group, n=25） and CT（CT group, n=25） were analyzed. The exposure time, radiation dose and clear showing of the lesions were observed and analyzed. Results The exposure time of TOMOS group was（0.700±0.050） s, significantly less than CT group（6.267±0.709） s, with statistically significant difference between with the two groups（t=7.912, P〈0.01）. The effective dose of TOMOS group was（0.033 ± 0.004） m Sv, significantly less than CT group（1.667 ± 0.537） m Sv, with statistically significant difference between with the two groups（t=11.812, P〈0.01）. TOMOS was significantly superior to CT in displaying the lesions of the mandibular angulus and ramus. Conclusion TOMOS technology is practical, convenient, with radiation dose less than 2% of CT. It has obvious advantages comparing with CT in displaying jaw lesions of the mandibular angulus and ramus with metal dentures, and can partly replace CT.

关 键 词：颌骨 评估对比 数字化断层融合技术 多层螺旋CT 有效剂量 

分 类 号：R445[医药卫生—影像医学与核医学]