[1]袁 回,李 达,徐瑞瑞,等.迭代重建技术结合低剂量扫描在CT引导肝癌微波消融术中的运用[J].介入放射学杂志,2021,30(03):249-253.
 YUAN Hui,LI Da,XU Ruirui,et al.Clinical application of iterative reconstruction technique combined with low- dose CT scanning in CT- guided microwave ablation of hepatic carcinomas[J].journal interventional radiology,2021,30(03):249-253.
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迭代重建技术结合低剂量扫描在CT引导肝癌微波消融术中的运用()

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《介入放射学杂志》[ISSN:1008-794X/CN:31-1796/R]

卷:
30
期数:
2021年03
页码:
249-253
栏目:
非血管介入
出版日期:
2021-03-29

文章信息/Info

Title:
Clinical application of iterative reconstruction technique combined with low- dose CT scanning in CT- guided microwave ablation of hepatic carcinomas
作者:
袁 回 李 达 徐瑞瑞 张 岩
Author(s):
YUAN Hui LI Da XU Ruirui ZHANG Yan.
Department of Minimally Invasive Intervention, Sun Yat- sen University Cancer Center, National Key Laboratory of Oncology of South China, Guangzhou, Guangdong Province 510060, China
关键词:
【关键词】 iDose4 微波消融 CT引导 图像质量 低剂量 肝癌
文献标志码:
A
摘要:
【摘要】 目的 分析混合迭代重建技术(iDose4)在CT引导微波消融(MWA)治疗肝癌中对图像质量和患者的辐射剂量的影响。方法 随机收集205例CT引导下MWA手术患者,根据重建方式和毫安值的不同分为3组:对照组84例(标准重建+200 mAs)、iDose4组59例(iDose4+200 mAs)和低剂量组62例(iDose4 +140 mAs),分别记录每例术中进针前、消融前针到位、拔针后3个序列CT图像的客观参数,包括:噪声,用图像的标准差(SD)表示,信噪比(signal to noise ratio,SNR)、 对比噪声比(contrast to noise ratio,CNR),整体图像质量的主观评价。并记录以上3个序列每例患者的容积CT剂量指数(CT dose index volume,CTDIvol),总剂量长度乘积(dose-length product,DLP),总有效辐射剂量(effective dose,ED)。结果 与对照组对比,iDose4组进针前、针到位、拔针后3个序列CT图像SD 显著较低(P<0.001),SNR、CNR显著较高(P<0.001),主观评价也有优势(P<0.05),CTDIvol,DLP,ED差异均无统计学意义(P>0.05);低剂量组CTDIvol,DLP,ED有明显较低(P<0.001),针到位序列CT图像SD较低(P<0.05)、SNR、CNR较高(P<0.05),主观评价也存在差异(P<0.05),其他2个序列CT图像SD、SNR、CNR、主观评价的差异无统计学意义(P>0.05)。结论 iDose4的运用能够在不增加患者辐射剂量的情况下,明显提高肝MWA术中CT图像的质量。另外,在结合低毫安扫描时,能大幅降低患者辐射剂量的同时,还能相对提高存在有消融针的CT图像的质量。

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备注/Memo

备注/Memo:
(收稿日期:2020-03-24)
(本文编辑:俞瑞纲)
更新日期/Last Update: 2021-03-24