论文部分内容阅读
目的 评价多层螺旋CT及其后处理技术在评价颈部肿瘤气管侵犯的应用价值 ,探讨颈部肿瘤气管侵犯的诊断标准。资料与方法 对 2 0例颈部气管旁恶性肿瘤患者 (2 2个肿瘤 )行前瞻性的术前CT检查 ,3位医师双盲法评价横断面扫描图像、多平面重建 (MPR)和容积再现 (VR)图像上颈部肿瘤与气管的关系 ,对比手术及病理结果 ,进行统计学分析。结果 对气管受侵的判断 ,MPR的准确性 (90 .9% )与横断面 (86 .4 % )相仿 (P =1.0 0 0 ) ;对气管受侵的诊断价值 ,气管MPR和VR评分≥ 3分者分别占 6 8.2 %、2 2 .7% (P <0 .0 1) ;肿瘤与气管交角≥ 90°时气管受侵多于交角 <90°时 (P <0 .0 5 )。结论 对气管受侵的判断 ,横断面是基本诊断方法 ,MPR可为横断面提供重要的补充信息 ,气管VR价值有限 ,MPR对判断气管受侵的应用价值高于气管VR。
Objective To evaluate the value of multi-slice spiral CT and its post-processing techniques in evaluating the tracheal invasion of cervical neoplasms and to explore the diagnostic criteria of tracheal invasion of neck tumors. Materials and Methods Prospective preoperative CT was performed on 20 patients with malignant tracheoma of the neck (2 of 2 tumors). Three physicians performed double-blind evaluation of cross-sectional images, multiplanar reconstruction (MPR) and volume rendering (VR) images of the neck tumor and trachea relationship, surgical and pathological results were compared for statistical analysis. Results The accuracy of MPR was similar to that of the transverse section (86.4%) (P = 1.0 0 0). The diagnostic value of tracheal invasion, trachea MPR and VR score ≥ 3 points accounted for 62.2% and 22.7% respectively (P <0.01). The tracheal invasion was more than that at the crossing angle of 90 ° (P <0.05). Conclusion The assessment of tracheal invasion and cross section are the basic diagnostic methods. MPR can provide important supplementary information for cross section. The value of tracheal VR is limited. The value of MPR for tracheal invasion is higher than tracheal VR.