摘要
目的 比较容积再现技术 (volumerenderingtechnique ,VRT)和仿真支气管镜 (virtualbrochoscopy ,VBS)在评估中心型肺癌气管支气管树肿瘤侵犯中的临床应用价值。资料与方法 4 6例中心型肺癌患者行前瞻性的CT检查 ,采用直接增强扫描 ,在工作站得到气管支气管树VRT和VBS图像。盲法阅片 ,对比影像诊断结果与手术及病理结果 ,利用SPSS 1 0 .0进行统计学分析。结果 VRT、VBS对评价中心型肺癌气管支气管树肿瘤侵犯的敏感性分别为86 .9%和 6 6 .7% ,有极显著统计学差异 (χ2 =9.6 5 1 ,P =0 .0 0 2 )。特异性分别为 93 .1 %和 86 .2 % ,无明显统计学差异 (χ2 =0 .74 4 ,P =0 .6 70 )。准确性分别为 88.5 %和 71 .7% ,有极显著统计学差异 (χ2 =1 0 .0 1 7,P =0 .0 0 2 )。结论VRT无论在观察范围还是诊断的准确性方面均优于VBS ,在中心型肺癌气管支气管树肿瘤侵犯的评估中VRT可以取代VBS。
Objective To evaluated volume rendering technique (VRT) and virtual bronchoscopy (VBS) in observing tracheobronchial tree involvement due to central lung cancer. Materials and Methods In a prospective series, spiral CT (Picker 6000 scanner) examination was performed in 52 patients with suspected central lung cancer. Six patients were excluded after operation. The study volume was from the level of aortic arch to the level of inferior pulmonary veins. Using 3 mm collimation and 1.0 pitch, the scanning was completed with a single breath hold. The image was reconstructed at 1 mm interval. VRT images were compared with VBS images by three radiologists in a blind way. The image findings were compared with the surgical and pathological results.Results Reconstructed image quality was graded as excellent (50%) or good (41.3%), whereas poor image quality due to motion related artifacts was seen in 8.7% of cases. In displaying branches, VRT was more sensitive, specific and accurate than VBS (86.9% vs 66.7%, 93.1% vs 86.2% and 88.5% vs 71.7%, respectively). The difference in sensitivity and accuracy between VRT and VBS was statistically significant (P=0.002 in both).Conclusion VRT is more directly perceived and more accurate than VBS, it can substitute for VBS in evaluating neoplastic invasion of tracheobronchial tree.
出处
《临床放射学杂志》
CSCD
北大核心
2002年第6期425-428,共4页
Journal of Clinical Radiology
基金
为"九五"国家重点科技攻关项目 (专题合同编号 :96 -92 0 -0 6 -0 5 -4 )
