首页> 外文期刊>Academic radiology >Comparison of chest dual-energy subtraction digital tomosynthesis and dual-energy subtraction radiography for detection of pulmonary nodules. Initial evaluations in human clinical cases.
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Comparison of chest dual-energy subtraction digital tomosynthesis and dual-energy subtraction radiography for detection of pulmonary nodules. Initial evaluations in human clinical cases.

机译:胸部双能量减法数字可染色和双能减射线照相检测肺结节的比较。 人类临床病例的初步评价。

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摘要

Rationale and Objectives: To compare initial evaluations of chest dual-energy subtraction digital tomosynthesis (DES-DT) and dual-energy subtraction radiography (DES-R) for detection of pulmonary nodules. Materials and Methods: DES-DT and DES-R systems with pulsed x-rays and rapid kV switching were used to evaluate pulmonary nodules (>4-6mm, 2 nodules; >6-8mm, 2 nodules; >8mm, 32 nodules). Multidetector computed tomography was used as a reference. A filtered back-projection algorithm was used to reconstruct low-voltage (60 kVp), high-voltage (120 kVp), and soft-tissue or bone-subtracted tomograms of the desired layer thicknesses from the image data acquired during a single tomographic scan. DES-R images were processed from the low- and high-voltage images. To detect the pulmonary nodules, we used both systems to examine 36 patients with and 36 patients without pulmonary nodules. Two radiologists and three doctors of pulmonary medicine (average experience, 18years) performed receiver operating characteristic (ROC) curve analysis to evaluate the results. Results: The ROC analysis results suggested that the detection ability was significantly better for DES-DT than for DES-R ( P<.0001; 95% confidence interval: DES-DT, 0.94 [0.83-0.99]; DES-R, 0.76 [0.68-0.85]; sensitivity: DES-DT, 87.7±2.9%; DES-R, 53.8±3.5%; specificity: DES-DT, 78.3±5.6%; DES-R, 78.4±3.4%; accuracy: DES-DT, 83.1±3.8%, DES-R, 66.1±2.0%). When the nodules were no longer superimposed over the normal structures, their characteristics and distribution could be observed much more clearly. Conclusion: Compared with DES-R, DES-DT provided greater sensitivity for detection of pulmonary nodules, particularly for the larger ones.
机译:理由和目标:比较胸部双能量减法数字粒子合成(DES-DT)和双能减射线照相(DES-R)的初始评估,用于检测肺结核。材料和方法:采用脉冲X射线和快速kV切换的DES-DT和DES-R系统来评估肺结核(> 4-6mm,2个结节;> 6-8mm,2个结节;> 8mm,32个结节) 。 MultiDetector计算机断层扫描被用作参考。过滤的背投算法用于重建低压(60kVP),高压(120kVP)和软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或软组织或骨减去在单个断层扫描期间获取的图像数据中的所需层厚度的。从低压图像处理DES-R图像。为了检测肺结核,我们使用两种系统检查36名患者和36名没有肺结核的患者。两个放射科医生和三位肺部医学(平均经验,18年)进行了接收器操作特征(ROC)曲线分析,以评估结果。结果:ROC分析结果表明,DES-R的检测能力显着更好,而不是DES-R(P <.0001; 95%置信区间:DES-DT,0.94 [0.83-0.99]; DES-R,0.76 [0.68-0.85];灵敏度:DES-DT,87.7±2.9%; DES-R,53.8±3.5%;特异性:DES-DT,78.3±5.6%; DES-R,78.4±3.4%;准确度:des- DT,83.1±3.8%,DES-R,66.1±2.0%)。当结节不再叠加在正常结构上时,可以更清楚地观察到它们的特性和分布。结论:与DES-R相比,DES-DT为检测肺结节提供了更大的灵敏度,特别是对于较大的肺结节。

著录项

  • 来源
    《Academic radiology》 |2013年第11期|共7页
  • 作者单位

    School of Allied Health Sciences Kitasato University Kitasato 1-15-1 Minami-ku Sagamihara;

    Department of Radiology Dokkyo Medical University Koshigaya Hospital Saitama Japan;

    School of Allied Health Sciences Kitasato University Kitasato 1-15-1 Minami-ku Sagamihara;

    School of Allied Health Sciences Kitasato University Kitasato 1-15-1 Minami-ku Sagamihara;

    Department of Radiology Dokkyo Medical University Koshigaya Hospital Saitama Japan;

    Hosoda Clinic Tokyo Japan;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 放射医学;
  • 关键词

    Dual-energy subtraction; Pulmonary nodules; Tomosynthesis;

    机译:双能量减法;肺结核;Tomosynthesis;

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