摘要
目的探讨64排螺旋CT低剂量扫描技术诊断肺结节的临床价值。方法方便选取该院自2018年1月-2019年1月诊治的52例肺部结节患者为观察对象,采用64排螺旋CT常规剂量(200 mA)与低剂量(40 mA)进行扫描,比较常规剂量和低剂量检查结果。结果低剂量CT扫描微结节、小结节、大结节个数、总个数分别为12个、41个、30个、83个,常规剂量CT扫描分别为14个、41个、30个、85个,两者比较差异无统计学意义(χ~2=0.130、0.023、0.013、P=0.718、0.880、0.908)。低剂量与常规剂量下肺部结节分叶征、毛刺征、血管集束征、胸膜凹陷征、钙化、空洞、支气管征比较差异无统计学意义(P>0.05);低剂量CT扫描对结节性质诊断中,肺癌原发灶、肺转移瘤、结核灶、炎性结节、无法判断结节个数分别为23个、16个、19个、14个、11个,常规剂量CT扫描分别为24个、17个、20个、14个、10个,两者比较差异无统计学意义(χ~2=0.006、0.014、0.010、0.005,0.085,P=0.940、0.906、0.922、0.945、0.771)。结论 64排螺旋CT进行40m A低剂量扫描对肺结节检出率、影像学特征、结节性质诊断与常规剂量相当,而射线剂量显著低于常规剂量,安全系数更高,有望成为筛查和诊断肺结节的有效手段。
Objective To explore the clinical value of 64-slice spiral CT low-dose scanning technology in the diagnosis of pulmonary nodules. Methods Convenient select a total of 52 patients with pulmonary nodules in the hospital from January2018 to January 2019 were selected as observation objects, and the 64-slice spiral CT conventional dose(200 mA) and low dose(40 m A) were scanned to compare test results of the conventional dose and the low dose. Results The number and total number of micronodules, small nodules, and large nodules in low-dose CT scans were 12, 41, 30, and 83, and conventional dose CT scans were 14, 41, and 30, 85, there is no statistically significant difference between the two(χ~2=0.130, 0.023,0.013, P=0.718, 0.880, 0.908). There was no significant difference between low-dose and regular-dose lung nodule sign,burr sign, vascular bundle sign, pleural depression sign, calcification, cavity, and bronchus sign(P>0.05). In the diagnosis of nodular properties, the number of primary lung cancer, lung metastases, tuberculosis, inflammatory nodules, and nodules that cannot be judged were 23, 16, 19, 14, and 11, respectively. Conventional-dose CT scans were 24, 17, 20, 14, 10, and there was no significant difference between the two(χ~2=0.006, 0.014, 0.010, 0.005, 0.085, P=0.940, 0.906, 0.922, 0.945,0.771). Conclusion The 64-slice spiral CT with 40 mA low-dose scan has the same detection rate, imaging characteristics,and nodular diagnosis of pulmonary nodules as conventional doses, but the radiation dose is significantly lower than conventional doses, and the safety factor is higher. It is expected to become a screening and effective means for diagnosis of pulmonary nodules.
作者
王勇敢
WANG Yong-gan(Department of Radiology,Fangta Traditional Chinese Medicine Hospital,Songjiang District,Shanghai,201600 China)
出处
《中外医疗》
2020年第8期196-198,共3页
China & Foreign Medical Treatment
关键词
肺结节
64排螺旋CT
低剂量
影像特征
结节性质
诊断
Pulmonary nodules
64-slice spiral CT
Low dose
Imaging characteristics
Nodular properties
Diagnosis
