A Phantom-Based Assessment of Repeatability and Reproducibility of Transvaginal Quantitative Ultrasound.
A Phantom-Based Assessment of Repeatability and Reproducibility of Transvaginal Quantitative Ultrasound.
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基于体模的经阴道定量超声的重复性和再现性评估。
DOI：
10.1109/tuffc.2019.2921925
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Han,Aiguo
中科院分区：
文献类型：
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作者：
Chen,Shi;McFarlin,BarbaraL;Meagher,BarbaraT;Peters,TaraA;Simpson,DouglasG;O'Brien,WilliamD;Han,Aiguo
本文评估了产科应用经阴道 QUS 参考体模中定量超声 (QUS) 生物标志物衰减系数 (AC) 和反向散射系数 (BSC) 的重复性和再现性 (R&R)。三个超声医师根据扫描方案扫描了五个模型。每个超声医师使用相同型号 (MC9-4) 的四个经阴道换能器和三种探头盖类型（乳胶盖、非乳胶盖和无盖）扫描每个体模。 AC 和 BSC 通过使用参考体模方法进行估计。通过使用三因素随机效应交互方差分析，对频率平均 AC 和 logBSC (= 10log10BSC) (5.4-5.8 MHz) 进行 R&R 分析。 AC 和 logBSC 的总 R&R 变化较小（AC：0.042-0.065 dB/cm-MHz；logBSC：0.50-0.68 dB），表明测量精度较高。与五个模型的 AC (0.28-0.99 dB/cm-MHz) 和 logBSC (-33.16 至 -20.35 dB) 范围相比，这些值很小。使用参考体模方法在经阴道 QUS 体模上测量的 AC 和 logBSC 生物标志物在超声检查者、换能器和探头盖之间是可重复的和可再现的。
This article evaluated the repeatability and reproducibility (R&R) of quantitative ultrasound (QUS) biomarkers attenuation coefficient (AC) and backscatter coefficient (BSC) in transvaginal QUS reference phantoms for obstetric applications. Five phantoms were scanned by three sonographers according to the scanning protocol. Each sonographer scanned each phantom with four transvaginal transducers of the same model (MC9-4) and three probe cover types (latex cover, nonlatex cover, and no cover). The AC and BSC were estimated by using a reference phantom method. The R&R analysis was performed for the frequency-averaged AC and logBSC (= 10log10BSC) (5.4-5.8 MHz) by using three-factor random effects Analysis of Variance with interaction. The total R&R variabilities for AC and logBSC are small (AC: 0.042-0.065 dB/cm-MHz; logBSC: 0.50-0.68 dB), indicating high measurement precision. These values are small compared to the ranges of AC (0.28-0.99 dB/cm-MHz) and logBSC (-33.16 to -20.35 dB) of the five phantoms. The AC and logBSC biomarkers measured on transvaginal QUS phantoms using the reference phantom method are repeatable, and reproducible between sonographers, transducers, and probe covers.