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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

Tsukasa Yoshida¹, Atsushi Urikura^2,3, Kazuaki Nakashima⁴

¹Department of Diagnostic Radiology, Shizuoka Cancer Center, Shizuoka, Japan. ts.yoshida@scchr.jp.

Abdominal radiology (New York)

|September 12, 2025

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.

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.

关键词:

表面扩散系数的明显扩散系数对比度与噪声比的比率.扩散权重的磁共振成像技术磁共振成像技术磁共振成像技术信号与噪声的比率.

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