摘要
目的探讨常规剂量与低剂量CT扫描诊断在肺结节中的价值。方法对120例肺部有小结节的患者进行肺部常规剂量与低剂量CT扫描,并对其扫描结果进行汇总分析,比较常规剂量和低剂量下图像质量、肺结节大小分布及检出数、形态学特征及定性诊断情况。结果低剂量图像优良率为100.0%,与常规剂量图像的98.3%比较,差异无统计学意义(P>0.05)。常规剂量肺结节检出数与低剂量检出数比较,差异无统计学意义(P>0.05);常规剂量下肺窗、纵隔窗检出同类形态小结节数量与低剂量比较,差异无统计学意义(P>0.05);常规剂量下肺癌、结核增殖灶、肺转移瘤、炎性结节及定性困难数量与低剂量比较,差异无统计学意义(P>0.05)。常规剂量与低剂量相比,低剂量图像噪声较大,肺窗背景有半透明膜样改变,纵隔窗均匀度较低,骨质较密区域伪影加重。结论采用低剂量螺旋CT扫描检查肺结节,与常规剂量相比,影像质量和诊断效果并未降低,但降低了患者的吸收剂量,取得了满意效果,值得临床推广。
Objective To explore the value of conventional dose and low dose CT scan in diagnosisof pulmonary nodule.Methods A total of120patients with pulmonary nodule received conventional dose andlow dose CT scan,and scan results was summarized and analyzed.Comparison were made on image quality,pulmonary nodule size distribution,inspection results,morphological characteristics and qualitative diagnosisbetween conventional dose and low dose scan.Results Low dose had no statistically significant difference inimage excellence-good rate as100.0%comparing with98.3%by conventional dose(P>0.05).Conventional dosehad no statistically significant difference in pulmonary nodules results comparing with conventional dose(P>0.05).Conventional dose had no statistically significant difference in similar form nodules detected from pulmonary andmediastinal window comparing with low dose(P>0.05).Conventional dose had no statistically significant differencein lung cancer,tuberculosis proliferation focal,pulmonary metastasis,inflammatory lesions and difficult qualitativeamount comparing with low dose(P>0.05).Comparison between conventional dose and low dose showed highpattern noise,semi-transparent membrane change of lung window background,low uniformity of mediastinumwindow,and aggravated artifacts of dense sclerotin in low dose manifestation.Conclusion Compared withconventional dose,low dose spiral CT scan of pulmonary nodules shows equal image quality and diagnosis effect,and decreased absorbed dose in patients.This method obtains satisfactory effect,and it is worthy of clinicalpromotion.
作者
郭剑波
李玉林
GUO Jian-bo;LI Yu-lin(Department Two of CT, Guangdong Province Meizhou City People’s Hospital, Sun Yat-Sen University Affiliated Meizou Hospital, Meizhou 514021, China)
出处
《中国现代药物应用》
2017年第11期7-9,共3页
Chinese Journal of Modern Drug Application
关键词
低剂量CT扫描
常规剂量
肺结节
Low dose CT scan
Conventional dose
Pulmonary nodule
