DTS 技术在儿童寰枢关节半脱位检查中的应用

目的：探讨数字断层融合(DTS)技术在儿童寰枢关节半脱位检查中的应用价值。方法选取30例临床表现为斜颈、头颈部活动障碍及局部疼痛的患儿,征得患者及家属同意后,同时行寰枢关节张口位、颈椎侧位数字化 X 线摄影术(DR)及 DTS 扫描,比较2种成像技术的图像质量及诊断结果。结果30例患儿中,DTS 成像和 DR 摄影的优质图像率分别为90%(27/30)和53%(16/30)；DTS 技术发现的22例寰枢关节半脱位患儿中,DR 检查仅确诊12例,可疑半脱位4例,漏诊6例。结论DTS 对儿童寰枢关节半脱位能获得高对比度、高质量的图像,清晰显示寰枢关节的解剖结构和病变形态。

Inspection application value of digital tomosynthesis in children atlanto-axial joint subluxation

Objective To explore the digital tomosynthesis(DTS)technology application value in children with atlanto-axial joint subluxation inspection.Methods 30 children with torticollis after injury,head and neck activities obstacles or local pain were selected.The consent of patient and family was obtained.At the same time the atlanto-axial joint open mouth,cervical lateral radiographies and DTS scanning were performed,two imaging quality and the diagnosis were compared.Results In all 30 cases,excellent imaging rate was 90% (27/30)on DTS and 53% (1 6/30)on DR respectively.On DTS atlanto-axial sublution were found in 22 cases but on DR atlanto-axial sublution were diagnosed in only 12 cases,suspicious subluxation in 4 cases,and misdiagnosis in 6 cases.Conclusion For diagnosis of atlanto-axial joint subluxation in children,DTS can obtain high quality images,clearly display anatomic structures and pathological morphology of atlanto-axial joint.