摘要
目的探讨减少CT引导下肺穿刺时辐射剂量的方法。方法将80例接受CT引导下肺部穿刺活检的患者平均分为A、B、C、D组。对A组使用64排CT、B组使用24排CT引导下穿刺,C组使用24排CT并用特殊激光定位配合真空垫固定,D组使用24排CT并用特殊激光定位配合真空垫固定,同时采用低kV值和CARE DOSE 4D技术,比较各组的剂量长度乘积(DLP)。结果 A～D组DLP均值分别为(778.73±310.79)mGy.cm、(817.80±349.37)mGy.cm、(541.45±173.03)mGy.cm、(263.40±68.68)mGy.cm。A组与B组间DLP差异无统计学意义(P>0.05),B组与C组、C组与D组间DLP差异均有统计学意义(P均<0.05)。结论 CT引导下肺部穿刺术中,精确定位和低kV配合CARE Dose 4D技术能有效降低患者的辐射剂量。
Objective To explore the ways to reduce radiation dose of CT-guided lung biopsy. Methods Totally 80 pa-tients who underwent CT-guided lung biopsy were randomly divided into 4 groups （each n=20）. Group A used 64 slice CT and group B used 24 slice CT, group C used special laser light for positioning and the vacuum pad fixation position with 24 slice CT, group D on the basis of group C used low kV and CARE Dose 4D. Dose-length product （DLP） was compared a-mong 4 groups. Results The mean value of DLP in group A, B, C, D was （778.73±310.79）mGy · cm, （817.80± 349.37）mGy · cm, （541.45±173.03）mGy · cm, （263.40 4±68.68）mGy · cm, respectively. No significant difference of DLP was found between group A and group B （P〉0.05）, but the difference between group B and group C, group C and group D were statistical （all P〈0. 05）. Conclusion The application of precise position with low kV and CARE Dose 4D in CT-guided lung biopsy can significantly reduce radiation dose.
出处
《中国介入影像与治疗学》
CSCD
2013年第6期373-375,共3页
Chinese Journal of Interventional Imaging and Therapy
关键词
穿刺术
肺
辐射剂量
剂量长度乘积
Punctures
Lung
Radiation dosage
Dose-length product
