相关实验视频

Updated: Jun 9, 2025

Novel In Vivo Micro-Computed Tomography Imaging Techniques for Assessing the Progression of Non-Alcoholic Fatty Liver Disease

Novel In Vivo Micro-Computed Tomography Imaging Techniques for Assessing the Progression of Non-Alcoholic Fatty Liver Disease

Published on: March 24, 2023

美国减弱系数的系统间和运营商间协议,用于量化肝硬化症

Giovanna Ferraioli¹, Davide Roccarina¹, Richard G Barr¹

¹From the Department of Clinical-Surgical, Diagnostic, and Pediatric Sciences, University of Pavia, Pavia, Italy (G.F.); Division of Internal Medicine and Hepatology, Azienda Ospedaliero Universitaria Careggi, Firenze, Italy (D.R.); Sherlock Liver Unit and UCL Institute for Liver and Digestive Health, Royal Free Hospital, London, England (D.R.); Department of Radiology, Northeast Ohio Medical University, Rootstown, Ohio (R.G.B.); and Southwoods Imaging, 7623 Market St, Youngstown, OH 44512 (R.G.B.).

|October 29, 2024

概括

超声波减弱系数 (AC) 测量肝肥症在不同系统之间显示出显著的变化,限制了它们在诊断中的可互换性. 然而,在各种交流算法中,运营商间的协议从中等到优秀不等.

科学领域:

医疗成像医学成像
诊断性的超声波检查
肝病学肝病学是一种肝病学.

背景情况:

肝脏肥胖症的评估使用超声波衰减系数 (AC) 算法.
对于这些测量,关于系统间和运营商间变量的数据有限.

研究的目的:

评估超声波交流测量中系统间和运营商间的协议,以量化肝脂肪.
评估AC算法结果与MRI质子密度脂肪分数 (PDFF) 的相关性.

主要方法:

一项前性研究,涉及26名不同程度的肝硬化症患者.
两个操作员独立测量了AC,使用八种不同的超声波系统与制造商特定的AC算法.
在同一天,MRI PDFF测量由另一个操作人员执行.
类内相关系数 (ICC) 用于评估一致性;用于相关性分析的混合效应模型.

主要成果:

在五种算法中观察到美国AC和MRIPDFF之间的高相关性 (r=0.70-0.86),两个算法中适度 (r=0.62);一个算法中差 (r=0.47).
总体上,系统间协议很差 (ICC=0.33),系统对之间存在很大的变化.
互操作协议从中等到优秀 (ICC=0.50-0.90) 不同,三星医疗,西门子医疗和佳能医疗系统显示良好到优秀的协议.

结论:

在不同的超声系统中,AC值存在实质性的变化,这阻碍了肝硬化症诊断和监测的可互换性.
对交流测量的运营商间协议通常是很好或很好,这表明运营商的一致性是可以实现的.

更多相关视频

Author Spotlight: A Non-Invasive Tool to Assess and Differentiate Fat Patterns in Liver Using 3D Dixon MRI

Author Spotlight: A Non-Invasive Tool to Assess and Differentiate Fat Patterns in Liver Using 3D Dixon MRI

Published on: October 20, 2023

Author Spotlight: Analysis of Fluorescent-Stained Lipid Droplets with 3D Reconstruction for Hepatic Steatosis Assessment

Author Spotlight: Analysis of Fluorescent-Stained Lipid Droplets with 3D Reconstruction for Hepatic Steatosis Assessment

Published on: June 2, 2023

相关概念视频

Ultrasound II: Endoscopic Ultrasound and FibroScan

Ultrasound II: Endoscopic Ultrasound and FibroScan

Endoscopic Ultrasound (EUS) and FibroScan are valuable diagnostic tools in gastroenterology and hepatology, each with specific applications and techniques.
Endoscopic Ultrasound (EUS):

Ultrasonography

Ultrasonography

Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
During an ultrasonography procedure, a handheld device called...

Ultrasound I: Abdominal Ultrasonography

Ultrasound I: Abdominal Ultrasonography

Introduction:
Abdominal ultrasonography, commonly known as abdominal ultrasound, is a vital, non-invasive medical imaging technique widely used in healthcare.
Procedure:
This diagnostic tool allows the clinician to visually inspect internal structures within the abdomen, including vital organs such as the liver, gallbladder, pancreas, kidneys, and spleen.
The abdominal ultrasound process begins with applying a special gel to the patient's skin over the abdomen. This gel enhances the...