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在腹部计算扩散加权成像中的软件间协议:明显扩散系数和图像质量评估.

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概括

两个软件程序在腹部计算扩散权重成像 (cDWI) 中显示出明显扩散系数 (ADC) 值的强烈一致性和高可靠性. 图像质量差异很小,表明临床使用的结果一致.

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科学领域:

  • 放射学 放射学是一门学科.
  • 医疗成像医学成像
  • 扩散加权成像是一种扩散加权成像.

背景情况:

  • 腹部扩散加权成像 (DWI) 对于诊断各种疾病至关重要.
  • 计算机DWI (cDWI) 生产涉及不同的软件,需要验证一致性.
  • 表面扩散系数 (ADC) 值是DWI的关键定量指标.

研究的目的:

  • 为了评估两个软件程序之间的ADC值的协议对腹部cDWI.
  • 评估和比较由这些软件程序生成的cDWI的图像质量,包括信号与噪声比 (SNR) 和对比与噪声比 (CNR).

主要方法:

  • 对154名患者的回顾性分析,在3.0T时接受腹部DWI.
  • 使用扫描仪控制台和商业软件生成 1500 和 2000 s/mm2 的 b 值的 cDWI.
  • 在正常组织中测量ADC,SNR和CNR;布兰德-阿尔特曼分析和类内相关系数 (ICC) 以获得一致性和可靠性.

主要成果:

  • 软件之间的ADC值的高度一致性和可靠性 (ICCs 0.991-1.000).
  • ADC偏差和协议的极限是最小的.
  • 观察到SNR和CNR的显著差异,但被认为在临床上无关紧要.

结论:

  • 从腹部cDWI获得的ADC值在评估的软件程序之间高度一致.
  • 图像质量指标 (SNR,CNR) 显示了一些差异,但这些差异不太可能影响临床解释.
  • 这些发现支持来自两个用于腹部cDWI分析的软件程序的ADC值的可互换性.