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目的探讨靶扫描在孤立性肺结节诊断中的价值。方法常规扫描采用层厚10mm,扫描视野36cm左右,标准算法重建,靶扫描采用小扫描视野(16￣20cm),层厚2￣5mm,P=1-2,重建时重叠50%,用标准算法及骨算法两种重建。对同时具有两种扫描方法并经手术切除,经皮肺穿刺活检病理证实及经抗感染治疗后复查的60例病例进行回顾性分析,比较常规扫描与靶扫描在显示孤立性肺结节征象与诊断准确性上的差异。结果60例靶扫描显示小结节征、空泡征、钙化、增强后高密度点条征、棘突征、毛刺征、分叶征、胸膜凹陷征、模糊绒毛征,高于常规扫描。靶扫描定性诊断准确率为93.3%,也高于常规扫描的81.7%。结论靶扫描能提高孤立性肺结节征象的显示率,有助于诊断及鉴别诊断,是肺部结节有效的检查方法。
Objective To investigate the value of target scanning in the diagnosis of solitary pulmonary nodules. Methods The conventional scanning method was based on a standard thickness of 10 mm and a scanning field of 36 cm. The standard algorithm was used to reconstruct the target. The target was scanned using a small scanning field (16-20 cm) with a layer thickness of 2-5 mm and P = 1-2. And bone algorithm two kinds of reconstruction. A retrospective analysis of 60 cases with both scanning methods and surgically resected, pathological examination of percutaneous pulmonary biopsy and retrospective analysis after anti-infective treatment was performed. The comparison between conventional and target scan in displaying solitary pulmonary nodules Differences in diagnostic accuracy. Results Sixty patients showed small nodules, vacuolar signs, calcifications, high density dot stripe signs, spine signs, spiculation signs, lobulation signs, pleural indentation signs and fuzzy villus signs, which were higher than those of routine scanning. The diagnostic accuracy of target scan was 93.3%, which was also higher than 81.7% of routine scan. Conclusion The target scan can improve the display rate of solitary pulmonary nodules, which is helpful for the diagnosis and differential diagnosis. It is an effective method to check the pulmonary nodules.