颌骨恶性肿瘤的X线、CT与三维CT对比研究

Comparative Study of Ordinary X-ray Film,CT and 3D-CT in Malignant Tumors of the Jaws

目的 探索颌骨恶性肿瘤影像学的征象特点,常规X线、CT和三维CT三种检查方式对颌骨病变显示的优缺点及互补点。方法 对不同类型的颌骨恶性肿瘤的常规X线、CT和三维CT显示情况进行对比分析,同时与手术病理结果相对照。结果 颌骨大部分原发恶性肿瘤、转移瘤和周围组织恶性肿瘤颌骨侵犯均不具有特征性的影像学征象,三种影像学检查均较难确定其组织学性质,但三种影像学检查相互结合可以准确显示病变的部位和范围。三维CT通过减影和旋转对腭板和眶下壁的骨质改变显示得最为理想,CT对病变的软组织成分及病变翼腭窝及咽壁侵犯的情况显示得最为有利。结论 三种影像学检查相互结合可以提高对颌骨恶性肿瘤显示的准确性。

Objective To explore the imaging signs of malignant tumors of the jaws,and to compare shortage,advantage and complemen of ordinary X ray film,CT and 3D CT. Methods The signs of ordinary X ray film,CT and 3D CT were compared with each other and with operative and pathological findings in 37 cases of malignant tumors of jaws. Results Most jaws malignant tumors,metastatic tumors and jaws invaded by surrounding tissue's malignant tumors have none special signs.It is difficult to make histiosdialysis,but position and scope of the lesions could be shown with combination of these three imaging methods.In showing diseases,3D CT is very beneficial in finding the destruction of palate plate and inferior wall of orbit with rotation and subtraction.CT is very useful in showing the soft tissue parts of the lesions especially for invasion of the wall of pharynx and pterygopalatine space. Conclusion The combination of these three imaging methods could increase the accuracy in showing lesions of the malignant tumors. [