超低剂量CT引导下胸部穿刺活检的应用

发布时间：2018-05-15 19:11

本文选题：活组织检查 + 辐射剂量　；参考：《现代生物医学进展》2016年01期

【摘要】：目的:研究超低剂量扫描在CT引导下肺部穿刺活检中的应用。方法:2009年1月至2014年12月来本院200例行胸部CT引导下穿刺的患者分为常规剂量组(130 k V,90 m As)、超低剂量组(100 k V,7.5 m As),各组100例,并进行穿刺。根据CT机自动记录的受检者剂量长度乘积(dose length product,DLP)计算X线有效辐射剂量(effective dose,ED)。比较两组在辐射剂量、图片质量、穿刺成功率的差异。结果:超低剂量组和常规剂量组DLP分别为(25.79±1.13)m Gy·cm和(256.14±4.48)m Gy·cm(P0.05),ED分别为(0.36±0.02)m SV和(3.59±0.06)m Sv(P0.05)。图片质量均为A级。超低剂量组和常规剂量组穿刺成功率分别为88%(88/100)为92%(92/100),差异无统计学意义(x2=0.89,P0.05)。结论:超低剂量CT引导下胸部穿刺,可降低受检者的X线有效辐射剂量,图像质量可达到临床CT引导下胸部穿刺的要求,值得提倡和推广。
[Abstract]:Objective: to study the application of ultralow dose scanning in CT guided lung biopsy. Methods: from January 2009 to December 2014, 200 patients underwent chest CT guided puncture in our hospital were divided into routine dose group (130 kV) and ultra-low dose group (100 kV) with 7.5 m ASL, 100 cases in each group. The effective radiation dose was calculated according to the dose length product DLPs automatically recorded by CT machine. The difference of radiation dose, image quality and puncture success rate between the two groups was compared. Results: the DLP of ultralow dose group and conventional dose group were 25.79 卤1.13 mGy and 256.14 卤4.48 mGy respectively. The Ed of P0.05 was 0.36 卤0.02mSV and 3.59 卤0.06mSv / mGy, respectively. The picture quality is A grade. The successful rate of puncture in the ultra-low dose group and the routine dose group was 88 / 100) 92 / 100, respectively. The difference was not statistically significant (P 0.05). Conclusion: the chest puncture guided by ultralow dose CT can reduce the effective radiation dose of X-ray, and the image quality can meet the requirement of chest puncture guided by clinical CT, which is worth advocating and popularizing.
【作者单位】：哈尔滨医科大学附属第四医院医学工程科;黑龙江中医药大学附属第二医院针灸科;齐鲁制药有限公司药物研究院;哈尔滨医科大学附属第四医院医学影像科;
【基金】：黑龙江省卫生厅资助课题(2013-155)
【分类号】：R816.4

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