| 陈 雷,盖虎支,张 郁,马 珺,李高宏.16层螺旋CT不同剂量扫描对肺结节诊断价值及辐射度的影响[J].,2020,(11):2139-2142 |
| 16层螺旋CT不同剂量扫描对肺结节诊断价值及辐射度的影响 |
| Diagnostic Value and Irradiance of 16-slice Spiral CT with Different Dose Scans for Pulmonary Nodules |
| 投稿时间：2019-10-26 修订日期：2019-11-21 |
| DOI：10.13241/j.cnki.pmb.2020.11.030 |
| 中文关键词: 螺旋CT 低剂量 常规剂量 肺结节 诊断价值 辐射 |
| 英文关键词: Spiral CT Low dose Routine dose Pulmonary nodules Diagnostic value Radiation |
| 基金项目:山东省医药卫生科技发展计划项目（2016WS1319） |
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| 中文摘要: |
| 摘要 目的：探讨16层螺旋CT不同剂量扫描对肺结节诊断价值及辐射度的影响。方法：选取2017年9月至2018年10月期间在青岛市中心医院就诊的肺结节患者200例，所有患者均接受16层螺旋CT常规剂量扫描和低剂量扫描。比较常规剂量扫描和低剂量扫描的图像质量、CT征象检出情况（分叶征、毛刺征、胸膜凹陷征、血管集束征、支气管征）、肺结节定性诊断结果（肺癌、肺转移瘤、炎性结节、定性困难）、肺结节大小分布（≤5 mm、6-10 mm、>10 mm）、辐射度。结果：常规剂量和低剂量的扫描图像质量整体比较差异无统计学意义（P>0.05），常规剂量和低剂量的CT征象检出情况（分叶征、毛刺征、胸膜凹陷征、血管集束征、支气管征）比较差异无统计学意义（P>0.05），常规剂量和低剂量的肺结节定性诊断结果（肺癌、肺转移瘤、炎性结节、定性困难）比较差异无统计学意义（P>0.05），常规剂量和低剂量的肺结节大小分布（≤5 mm、6-10 mm、>10 mm）比较差异无统计学意义（P>0.05），低剂量的总管球剂量、有效管球剂量、CT容积剂量指数及剂量长度乘积均明显低于常规剂量，差异有统计学意义（P<0.05）。结论：16层螺旋CT低剂量扫描对肺结节的诊断价值与常规剂量扫描相当，并可有效减少辐射度，值得临床推广应用。 |
| 英文摘要: |
| ABSTRACT Objective: To investigate the diagnostic value and irradiance of 16-slice spiral CT with different dose scans for pulmonary nodules. Methods: 200 patients with pulmonary nodules who were treated in Qingdao Central Hospital from September 2017 to October 2018 were enrolled. All patients underwent 16-slice spiral CT routine dose scan and low dose scan. The image quality, CT signs (lobulation sign, burr sign, pleural indentation sign, vascular cluster sign, bronchial sign), qualitative diagnosis results of pulmonary nodules (lung cancer, pulmonary metastasis, inflammatory nodules, qualitative difficulty), size distribution of pulmonary nodules (<5 mm, 6-10 mm, >10 mm), irradiance were compared between routine dose scan and low dose scan. Results: There was no significant difference in image quality between routine dose scan and low dose scan(P>0.05). There was no significant difference between routine dose and low dose of CT signs (lobulation sign, burr sign, pleural indentation sign, vascular cluster sign and bronchial sign) (P>0.05). There was no significant difference between the routine dose and low dose of pulmonary nodules (lung cancer, pulmonary metastasis, inflammatory nodules, qualitative difficulty) (P>0.05). There was no significant difference in the size distribution of routine dose and low dose lung nodules (≤5 mm, 6-10 mm, >10 mm)(P>0.05). The total bulb dose, effective bulb dose, CT volume dose index and dose length product of low dose were significantly lower than those of routine dose, and the difference was statistically significant (P<0.05). Conclusion: The diagnostic value of 16-slice spiral CT low-dose scan for pulmonary nodules is similar to that of conventional dose scan, and it can effectively reduce the irradiance, which is worthy of clinical application. |
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