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目的 分析限局性机化性肺炎的CT ,特别是高分辨率CT(HRCT)的表现特点。方法回顾性对照分析 9例经组织学证实的限局性机化性肺炎 ,9例均行常规CT扫描 ,病灶部位行HRCT扫描 ,2例行增强扫描。结果 9例病灶最大直径 2～ 4cm (平均 2 .5cm)。除 1例位于肺野内距胸膜3cm处外 ,余 8例均邻近胸膜面。病灶呈圆形或类圆形结节状 4例 ,不规则多边结节形 5例 ,6例边缘呈弓形凹陷 ,与病灶中心层面相邻的上下层面多呈不规则形。于肺窗上 4例可见病灶邻近肺野内有不同程度的渗出性病变。结论 限局性机化性肺炎的CT ,特别是HRCT表现有一定特征 ,经全面分析大部分可与其他病变鉴别
Objective To analyze CT, especially high-resolution CT (HRCT) features of limited-effect machine-made pneumonia. Methods Retrospective analysis of 9 cases of histologically confirmed limited localized pneumonia, 9 cases underwent routine CT scan, the lesion line HRCT scan, 2 cases of enhanced scan. Results The maximum diameter of 9 lesions was 2 ~ 4cm (average 2.5cm). Except for one case located in the lung field 3 km away from the pleura, the other 8 cases were adjacent to the pleural surface. The lesions were round or round like nodules in 4 cases, irregular polygonal nodules in 5 cases, 6 cases were bow-shaped sag, and the upper and lower levels adjacent to the center of the lesion mostly irregular shape. 4 cases of lung window visible lesions adjacent to the lung field have different degrees of exudative lesions. CONCLUSIONS: CT, especially HRCT, has a certain feature in limited-area machine-made pneumonia. After a comprehensive analysis, most of the features can be distinguished from other lesions