目的 对多层螺旋CT动态增强扫描在孤立性肺结节中的应用价值进行探讨.方法 选取就诊于我院的单发孤立性肺结节患者60例,均给予多层螺旋CT动态扫描,对动态扫描增强后CT值改变情况、多层螺旋CT动态扫描与病理学诊断孤立性肺结节的结果进行比较.结果 1.恶性结节增强扫描后其CT值增高明显,显著高于良性结节,其差异具有统计学意义(P＜0.05).2.选择增强扫描后CT值改变≥20HU诊断为恶性结节,＜20 HU诊断为良性结节,对CT增强扫描和病理学诊断在孤立性结节的诊断结果进行比较,未见明显统计学差异(χ2=1.40,P＞0.05).结论 多层螺旋CT增强扫描对良恶性结节的诊断具有较高的应用价值,可以协助良恶性结节的鉴别诊断.%Objective To explore the value of dynamic enhanced multi-layer CT scan in solitary pulmonary nodule. Methods 60 patients with signle solitary pulmonary nodules were chosen to give dynamic ehchanced multi-layer spiral CT scan. The change of CT value and the pathological results were analyzed. Results The CT values of enhanced scan were obviously higher in the malignant group than the benign group with statistical significance ( P < 0. 05 ). The change of CT value equal or more than 20HU was considered to have malignant nodules, and the change less than 20HU diagnosed as benign nodules. There was no significant difference of diagnosis resluts between enhanced CT scan and pathological diagnosis on solitary nodule (x2= 1. 40, P > 0. 05 ). Conclusion Mult-layer spiral enhanced CT scan has a high application value in the differential diagnosis of patients with benign or malignant nodules.
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