Quantitative Ultrasound and Ultrasound-Based Elastography for Chronic Liver Disease: Practical Guidance, From the AJR Special Series on Quantitative Imaging.
IF 4.7 2区 医学Q1 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING
Li Xin Zhang,Marco Dioguardi Burgio,Valérie Vilgrain,Cheng Fang,Paul S Sidhu,Guy Cloutier,An Tang
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引用次数: 0
Abstract
Quantitative ultrasound (QUS) and ultrasound-based elastography techniques are emerging as non-invasive effective methods for assessing chronic liver disease. They are more accurate than B-mode imaging alone and more accessible than MRI as alternatives to liver biopsy. Early detection and monitoring of diffuse liver processes such as steatosis, inflammation, and fibrosis play an important role in guiding patient management. The most widely available and validated techniques are attenuation-based QUS techniques and shear-wave elastography techniques that measure shear-wave speed. Other techniques are supported by a growing body of evidence and are increasingly commercialized. This review explains general physical concepts of QUS and ultrasound-based elastography techniques for evaluating chronic liver disease. The first section describes QUS techniques relying on attenuation, backscatter, and speed of sound. The second section discusses ultrasound-based elastography techniques analyzing shear-wave speed, shear-wave dispersion, and shear-wave attenuation. With an emphasis on clinical implementation, each technique's diagnostic performance along with thresholds for various clinical applications are summarized, to provide guidance on analysis and reporting for radiologists. Measurement methods, advantages, and limitations are also discussed. The third section explores developments in quantitative contrast-enhanced and vascular ultrasound that are relevant to chronic liver disease evaluation.
期刊介绍:
Founded in 1907, the monthly American Journal of Roentgenology (AJR) is the world’s longest continuously published general radiology journal. AJR is recognized as among the specialty’s leading peer-reviewed journals and has a worldwide circulation of close to 25,000. The journal publishes clinically-oriented articles across all radiology subspecialties, seeking relevance to radiologists’ daily practice. The journal publishes hundreds of articles annually with a diverse range of formats, including original research, reviews, clinical perspectives, editorials, and other short reports. The journal engages its audience through a spectrum of social media and digital communication activities.