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能谱纯化Sn 150 kV结合ADMIRE在腰椎CT检查中的价值

蒋东 秦立新

蒋东, 秦立新. 能谱纯化Sn 150 kV结合ADMIRE在腰椎CT检查中的价值[J]. CT理论与应用研究, 2023, 32(0): 1-7. DOI: 10.15953/j.ctta.2022.240
引用本文: 蒋东, 秦立新. 能谱纯化Sn 150 kV结合ADMIRE在腰椎CT检查中的价值[J]. CT理论与应用研究, 2023, 32(0): 1-7. DOI: 10.15953/j.ctta.2022.240
JIANG D, QIN L X. Spectral filtration Sn 150 kV Combined with Advanced Simulated Iterative Reconstruction in Lumbar Computed Tomography Examination[J]. CT Theory and Applications, 2023, 32(0): 1-7. DOI: 10.15953/j.ctta.2022.240. (in Chinese)
Citation: JIANG D, QIN L X. Spectral filtration Sn 150 kV Combined with Advanced Simulated Iterative Reconstruction in Lumbar Computed Tomography Examination[J]. CT Theory and Applications, 2023, 32(0): 1-7. DOI: 10.15953/j.ctta.2022.240. (in Chinese)

能谱纯化Sn 150 kV结合ADMIRE在腰椎CT检查中的价值

doi: 10.15953/j.ctta.2022.240
详细信息
    作者简介:

    蒋东:男,武汉市肺科医院放射科主管技师,主要从事全身个性化血管成像技术工作,E-mail:1033967404@qq.com

    通讯作者:

    男,武汉市肺科医院放射科主任医师,主要从事胸部影像诊断研究,E-mail:1975136040@qq.com

Spectral filtration Sn 150 kV Combined with Advanced Simulated Iterative Reconstruction in Lumbar Computed Tomography Examination

  • 摘要: 目的:研究能谱纯化(SPS)Sn 150 kV结合高级模拟迭代重建(ADMIRE)在腰椎CT检查中的可行性。方法:选取在我院行腰椎CT检查的患者88例,选取年龄在25~65岁,BMI在18.5~25 kg/m2的患者,随机分成对照组(A组)和试验组(B组),每组44例;对照组管电压120 kV,试验组管电压Sn 150 kV,其他扫描参数均一致,检查完成后,比较两组的图像质量和辐射剂量。结果:A组和B组图像客观评价噪声存在统计学差异,A组图像噪声高于B组;主观评价3位诊断者的ICC为0.769,表示评价一致性较好;B组的辐射剂量低于A组30.31%。结论:采用能谱纯化Sn 150kV结合ADMIRE,不但能有效减低辐射剂量,还可保证优质的图像质量,值得在成人腰椎CT中推广使用。

     

  • 图  1  管电压120 kV下CT值和噪声测量及矢状位重组图(重组层厚1 mm、间隔0.6 mm)

    Figure  1.  CT value, noise measurement, and sagittal position recombination at 120 kV tube voltage (recombination layer thickness 1 mm, interval 0.6 mm)

    图  2  管电压Sn 150 kV下CT值和噪声测量及矢状位重组图(重组层厚1 mm、间隔0.6 mm)

    Figure  2.  CT value, noise measurement, and sagittal position recombination at tube voltage Sn 150 kV (recombination layer thickness 1 mm, interval 0.6 mm)

    表  1  120 kV组和Sn 150 kV组图像质量客观评价表

    Table  1.   Objective evaluation of image quality in the 120 kV and Sn 150 kV groups

    项目 组别统计检验
    120 kV组Sn 150 kV组ZP
       腰大肌/HU53.00(48.70~56.00)47.90(43.70~51.00)2.7410.016
       SD15.73(4.83~6.83)5.09(4.69~5.24)1.9040.057
       竖脊肌/HU52.00(46.2~55.00)43.50(38.20~51)3.511<0.001
       SD25.41(5.27~5.98)4.56(3.62~5.63)3.964<0.001
       SNR9.12(7.88~10.51)9.86(7.95~10.02)-0.693 0.488
    下载: 导出CSV

    表  2  三位诊断医师的主观评分统计分析表

    Table  2.   Statistical analysis of the subjective scores from the three doctors interpreting the computed tomography images

    指标组别P
    120 kV组Sn 150 kV组
    椎间盘   2.00±0.002.00±0.00>0.999
    椎间孔   1.98±0.151.98±0.15 0.156
    黄韧带   1.95±0.212.00±0.00 0.562
    硬膜囊   1.98±0.151.95±0.21>0.999
    小关节图像 2.00±0.002.00±0.00 0.320
    整体图像质量2.00±0.002.00±0.00>0.999
    下载: 导出CSV

    表  3  A组和B组辐射剂量统计表

    Table  3.   Radiation dose in groups A and B

    项目组别统计检验
    A组B组ZP
       mAs333.00(300.00~362.00)237.50(222.00~261.00)7.885<0.001
       CTDIvol14.75(13.65~16.00)6.57(5.20~7.23)8.015<0.001
       DLP413.60(351.00~425.50)280.13(230.89~327.20)6.946<0.001
       ED4.55(3.86~4.68)3.08(2.54~3.60)6.946<0.001
    下载: 导出CSV
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  • 收稿日期:  2022-11-30
  • 修回日期:  2023-04-02
  • 录用日期:  2023-04-06
  • 网络出版日期:  2023-09-07

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