[1]李立强,张振明,董险峰,等.小剂量低辐射手动触发技术在CT肺动脉血管成像中的应用价值[J].中国医学物理学杂志,2020,37(12):1490-1493.[doi:DOI:10.3969/j.issn.1005-202X.2020.12.003]
　LI Liqiang,ZHANG Zhenming,DONG Xianfeng,et al.Application value of low-dose low-radiation manual trigger technique in CT pulmonary artery angiography[J].Chinese Journal of Medical Physics,2020,37(12):1490-1493.[doi:DOI:10.3969/j.issn.1005-202X.2020.12.003]
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小剂量低辐射手动触发技术在CT肺动脉血管成像中的应用价值()
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《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]

卷:
37
期数:
2020年第12期
页码:
1490-1493
栏目:
医学放射物理
出版日期:
2020-12-30

文章信息/Info

Title:
Application value of low-dose low-radiation manual trigger technique in CT pulmonary artery angiography
文章编号:
1005-202X（2020）12-1490-04
作者:
李立强; 张振明; 董险峰; 尹晓霞; 曾凡学; 杜小蕊; 王海滨
滦州市人民医院影像科， 河北 滦州 063700
Author(s):
LI Liqiang;  ZHANG Zhenming;  DONG Xianfeng;  YIN Xiaoxia;  ZENG Fanxue;  DU Xiaoxui;  WANG Haibin
Department of Medical Imaging, Luanzhou City Peoples Hospital, Luanzhou 063700, China
关键词:
肺栓塞; CT肺动脉血管成像; 低管电压; 对比剂; 辐射剂量
Keywords:
pulmonary embolism CT pulmonary artery angiography low-tube voltage contrast agent radiation dose
分类号:
R811.1
DOI:
DOI:10.3969/j.issn.1005-202X.2020.12.003
文献标志码:
A
摘要:
目的：探讨小剂量低辐射手动触发技术在CT肺动脉血管成像（CTPA）中的应用价值。方法：90例疑似肺栓塞（PE）患者随机分为常规组（n=45）和小剂量组（n=45），常规组行常规模式（120 kV，50 mL对比剂）的CTPA扫描，小剂量组行低管电压小剂量对比剂（80 kV或100 kV，30 mL对比剂）的CTPA扫描。比较两组图像质量及辐射剂量。结果：CT值和SNR在两组肺动脉主干和右肺S10段肺动脉中比较均无统计学意义（P>0.05），而CNR在两组肺动脉主干和右肺S10段肺动脉中比较均无统计学意义（P>0.05），在右肺S1段肺动脉中，常规组的CNR则显著高于对照组，差异具有统计学意义（P<0.05）。两位观察者对图像质量分析有着极好的一致性（Kappa=0.865, P<0.001）。常规组CTDIvol、DLP、ED值分别为（8.89±1.96） mGy、（296.5±78.4） mGy[?cm、（4.45±1.76） mSv，均明显高于小剂量组的（3.12±0.68） mGy、（99.6±17.3） mGy[?cm、（1.09±0.27） mSv（P<0.05），小剂量组的ED值相比常规组降低约76%。结论：小剂量低辐射手动触发技术应用于CTPA中是可行的，在获取满足诊断需求图像质量的同时，能够有效减少辐射剂量及对比剂用量，提高检查安全性。
Abstract:
Objective To investigate the application value of low-dose low-radiation manual trigger technique in CT pulmonary artery angiography (CTPA). Methods 90 patients with suspected pulmonary embolism (PE) were randomly divided into regular group (n=45) and low-dose group (n=45). The regular group underwent conventional mode CTPA scanning (120 kV, 50 mL contrast agent), while the low dose group underwent low tube voltage and low dose CTPA scanning (80 kV or 100 kV, 30 mL contrast agent). The image quality and radiation dose of the two groups were compared. Results The CT value, SNR and CNR had no statistically significant differences between the two groups in pulmonary artery trunk and right lung S10 segment pulmonary artery (P>0.05). In the S1 pulmonary artery of the right lung, the CNR in regular group was significantly higher than that in the control group, and the difference has statistical significances (P<0.05). The two observers had excellent consistency on image quality analysis (Kappa=0.865, P<0.001). The values of CTDIvol, DLP and ED inregular group were (8.89±1.96) mGy, (296.5±78.4) mGy[?cm and (4.45±1.76) mSv respectively, which were significantly higher than those low-dose group with (3.12±0.68) mGy, (99.6±17.3) mGy[?cm and (1.09±0.27) mSv (P<0.05), and the ED value in low-dose group was reduced by about 76% compared with that in conventional group. Conclusion It is feasible to apply low dose and low radiation manual trigger technology to CTPA, for it can effectively reduce radiation dose and contrast agent dosage and improve examination safety while obtaining image quality meeting diagnostic requirements.

相似文献/References:

[1]张锋玫,黄军荣,谢紫东,等.肺栓塞肺动脉能谱CT胸部扫描影像学特征及其诊断价值[J].中国医学物理学杂志,2023,40(2):186.[doi:DOI:10.3969/j.issn.1005-202X.2023.02.010]
　ZHANG Fengmei,HUANG Junrong,XIE Zidong,et al.Imaging characteristics and diagnostic value of energy spectral CT pulmonary angiography for pulmonary embolism[J].Chinese Journal of Medical Physics,2023,40(12):186.[doi:DOI:10.3969/j.issn.1005-202X.2023.02.010]

备注/Memo

备注/Memo:
【收稿日期】2020-06-13 【基金项目】河北省医学科学研究重点课题（20181378） 【作者简介】李立强，研究方向：医学影像，E-mail: 531947042@qq.com 【通信作者】张振明，副主任医师，研究方向：医学影像，E-mail: 21682- 367@qq.com?
更新日期/Last Update: 2020-12-30