超声设置对实验室垂直伪影的影响。

Influence of Ultrasound Settings on Laboratory Vertical Artifacts.

机构信息

Critical Care Department, Hospital Garcia de Orta EPE, Almada, Portugal; Escola Superior de Tecnologia da Saúde de Lisboa, Instituto Politécnico de Lisboa, Lisboa, Portugal.

Escola Superior de Tecnologia da Saúde de Lisboa, Instituto Politécnico de Lisboa, Lisboa, Portugal.

出版信息

Ultrasound Med Biol. 2023 Aug;49(8):1901-1908. doi: 10.1016/j.ultrasmedbio.2023.03.018. Epub 2023 May 6.

DOI:10.1016/j.ultrasmedbio.2023.03.018

PMID:37150622

Abstract

OBJECTIVE

The aim of the work described here was to analyze the relationship between the change in ultrasound (US) settings and the vertical artifacts' number, visual rating and signal intensity METHODS: An in vitro phantom consisting of a damp sponge and gelatin mix was created to simulate vertical artifacts. Furthermore, several US parameters were changed sequentially (i.e., frequency, dynamic range, line density, gain, power and image enhancement) and after image acquisition. Five US experts rated the artifacts for number and quality. In addition, a vertical artifact visual score was created to determine the higher artifact rating ("optimal") and the lower artifact rating ("suboptimal"). Comparisons were made between the tested US parameters and baseline recordings.

RESULTS

The expert intraclass correlation coefficient for the number of vertical artifacts was 0.694. The parameters had little effect on the "optimal" vertical artifacts but changed their number. Dynamic range increased the number of discernible vertical artifacts to 3 from 36 to 102 dB.

CONCLUSION

The intensity did not correlate with the visual rating score. Most of the available US parameters did not influence vertical artifacts.

摘要

目的

本研究旨在分析超声（US）设置变化与垂直伪影数量、视觉评分和信号强度之间的关系。

方法

我们创建了一个由湿海绵和明胶混合物组成的体外模型来模拟垂直伪影。此外，我们还依次改变了几个 US 参数（即频率、动态范围、线密度、增益、功率和图像增强）并在图像采集后进行了改变。五位 US 专家对伪影的数量和质量进行了评分。此外，我们还创建了一个垂直伪影视觉评分，以确定更高的伪影评分（“最佳”）和更低的伪影评分（“次优”）。我们比较了测试的 US 参数与基线记录之间的差异。