双能量减影技术在胸部结节性病变诊断上的优势  

Advantage of Dual-energy Technique in Diagnosis of Chest Tubercular Diseases

作　　者：苏炎城[1] 郭代珠[2] 苗碧健[1] 林玉胜[1] 周湘涛[1] 黄莉琪[1] 

机构地区：[1]中山大学肿瘤防治中心影像介入中心,广东广州510060 [2]中山大学附属第一医院特内二区,广东广州510080

出　　处：《癌症》2004年第3期350-352,共3页Chinese Journal of Cancer

摘　　要：背景和目的:胸部疾病首选的检查方法是X线摄影,而一直以来胸片上肋骨和胸部组织前后重叠给观察者带来“视觉障碍”,影响病变的观察和分析。本研究的目的是探讨采用直接数字化X线摄影双能量减影技术对诊断位于肺和肋骨重叠处的胸部结节性病变的价值。方法:选择35例胸部直接数字化X线摄影中发现肺和肋骨重叠处有结节性病变的患者,利用直接数字化X线摄影双能量减影技术进行胸部结节性病变诊断和鉴别诊断。结果:双能量减影图像对病变的清晰显示率为94.3%,高于直接数字化X线摄影图像的45.7%。直接数字化X线摄影双能量减影技术,能将骨与软组织单独分开显示,减少遮挡。结论:采用直接数字化X线摄影双能量减影技术,可以提高肺结节性病变的可视性,能鉴别胸部小结节是肺内还是肋骨的病变,更好地为胸部结节性病变定性。BACKGROUND & OBJECTIVE: X-ray radiography is the first choice for detecting chest diseases. However, “visual obstacles” caused by the overlaps between ribs and lung in chest radiography affects the observation and analysis of chest diseases. The objective of this study was to investigate the value of direct digital ractiography (DR) dual-energy technique in diagnosis of chest di sease located in the overlaps between ribs and lung. METHODS: Thirty-five cases of chest tubercular diseases located in the overlaps between ribs and lung were examined using direct digital radiography (DR) dual-energy technique. RESULTS: Ratings of dual-energy technique radiography in detecting chest tubercular dis eases were 94.3% whereas the ratings of DR radiography were 45.7%. Bone and s oft tissue can be separated in the radiography using dual-energy technique. CON CLUSION: DR dual-energy technique not only increases the visibility towards che st tubercular disease, but also discriminates the location (ribs or lung) of che st tubercular disease.

关 键 词：双能量减影技术 胸部结节性病变 诊断 X线摄影 

分 类 号：R816.4[医药卫生—放射医学]