A Preliminary Comparison of Two Different Methods for Objective Uniformity Evaluation in Diagnostic Ultrasound Imaging

机译：两种不同方法对诊断超声成像中的两种不同方法的初步比较

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Although ultrasound image uniformity is a very important parameter for quality assurance in diagnostic ultrasounds, it is usually assessed by a qualitative and subjective judgement of technicians. In this work two novel method to obtain an objective measurement of the B-mode image uniformity over the whole field of view (or some of its part) are briefly described and compared: with the aim to quantify non-uniformities the first method is based on the image gray level histogram weighted by a sigmoid function (Sigma Weighted Histogram Method or SWHM) while the second one applies a segmentation of the Region of Interest, depending on some texture features from co-occurrence matrices processing (Texture Distribution Analysis Method or TDAM). Results from the two methods are preliminary compared and discussed on a set of 9 test images provided by means of two commercial ultrasound phantoms applied on different ultrasound scanners: the sensitivity to non-uniformities in SWHM is lower than in TDAM, on the other hand TDAM scores are more unstable and affected by higher uncertainties due to co-occurrence matrices calculations. Both methods require improvements and an in depth validation testing, nevertheless results are encouraging.

机译：虽然超声图像均匀性是诊断超声中质量保证的一个非常重要的参数，但通常通过技术人员的定性和主观判断来评估。在这项工作中，通过简要描述和比较两种新的方法，以获得整个视野（或其部分部分）的B模式图像均匀性的客观测量：通过旨在量化非均匀性，第一种方法是基于的在由SIGMOID函数（SIGMA加权直方图方法或SWHM）加权的图像灰度级别直方图上，而第二个函数适用于感兴趣区域的分割，这取决于来自共发生矩阵处理的一些纹理特征（纹理分布分析方法或TDAM ）。这两种方法的结果是初步的比较和讨论的一组9个测试图像，通过两种商业超声映像在不同的超声扫描仪上施加的一种，SWHM中对非均匀性的敏感性低于TDAM，另一方面是TDAM由于共发生矩阵计算，得分更不稳定并且受到更高的不确定性的影响。两种方法都需要改进和深度验证测试，因此结果是令人鼓舞的。

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《Mediterranean Conference on Medical and Biological Engineering and Computin》|2016年|2 v. (xxvi 1352p.)|共6页
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A. Scorza; S. Conforto; M. Schmid;
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中图分类生物医学工程;
关键词
Uniformity measurement; Diagnostic ultrasound; Quality assurance; Texture; Co-occurrence;

机译：均匀测量;诊断超声;质量保证;纹理;共同发生;

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A Preliminary Comparison of Two Different Methods for Objective Uniformity Evaluation in Diagnostic Ultrasound Imaging

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