多层螺旋CT后处理技术对孤立型细支气管肺泡癌的诊断价值

The Diagnostic Value of Multi-slices Spiral CT Post-processing Techniques in Displaying Lsolated Bronchioloalveolar Carcinoma

目的探讨多层螺旋CT三维重组对孤立型细支气管肺泡癌(bronchioloalveolar carcinoma,BAC)的诊断价值。资料与方法经病理证实的孤立型BAC 35例,分析高分辨率CT(HRCT)扫描、多平面重组(MPR)和容积再现(VR)技术对孤立型BAC基本征象的显示价值,并与常规横断位图像对比分析。结果35例孤立型BAC根据CT图像上病灶密度表现将病灶分为3种类型:(1)单纯磨玻璃密度结节(8例);(2)混杂密度结节(20例);(3)单纯实性密度结节(7例)。HRCT、MPR及VR在显示孤立型BAC的空泡征、纯磨玻璃征、环晕征、分叶征、毛刺征、胸膜凹陷征及支气管血管集束征方面优于常规横断位。结论HRCT及三维重组,较常规横断位扫描能更准确地显示孤立型BAC的内部细微结构及周围形态改变,对孤立型BAC诊断具有重要价值。

Objective To explore the value of multiple-slices spiral CT three-dimensional reformation showing isolated bronchioloalveolar carcinoma. Materials and Methods 35 cases of bronchioloalveolar carcinoma were demonstrated by pathology. The diagnostic value were analyzed by high-resolution CT （HRCT） , multiple planar reconstruction （MPR） and volume rendring（VR） , compared with routine axial image. Results 35 cases of hronchioloalveolar carcinoma were divided into three types according to lesion density： pure ground glass opacity（8 cases）, mixed density nodules（20 cases） and focal nodules（7 cases ）. HRCT, MPR and VR were superior to axial scanning in displaying the vacuole or air-bronchogram, ground glass opacity, lobulation, coarse edge, the pleual retraction and the convergence of peripheral vessels. Conclusion Multi-slices spiral CT and three-dimensional reformation more precisely show microstructure, morphologic changes of bronchiole-alveolar carcinoma than routine axial scanning, it is an important technique for the diagnosis and differential diagnosis of isolated bronchioloalveolar carcinoma.