Abstract
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Moazzam, MS, Asif Hanif, PhD, Muhammad Uzair, MS, Maida Iyaz, MS, and Yasmeen Niazi, MS
Describe the principles and clinical role of ultrasound elastography in assessing liver fibrosis.
Identify the different ultrasound elastography techniques used for liver fibrosis staging and their characteristics.
Discuss the factors that influence the diagnostic accuracy and variability of ultrasound elastography.
According to the article, what is considered the diagnostic gold standard for staging liver fibrosis? A. Serum biomarker analysis B. Computed tomography imaging C. Magnetic resonance imaging D. Liver biopsy
Which diagnostic performance metric was reported as 0.931 in this meta-analysis? A. Sensitivity B. Specificity C. Area under the curve (AUC) D. Diagnostic odds ratio
Which ultrasound elastography technique uses mechanical impulses to obtain liver stiffness measurements? A. Two-dimensional shear wave elastography (2D-SWE) B. Transient elastography C. Point shear wave elastography (pSWE) D. Doppler ultrasound imaging
What is a key advantage of point shear wave elastography (pSWE) according to the article? A. It eliminates the need for operator training B. It replaces the need for all other imaging modalities C. It provides full liver volumetric imaging D. It allows targeted depth adjustment in heterogeneous liver tissue
Which feature distinguishes two-dimensional shear wave elastography (2D-SWE) from other techniques? A. Use of serum biomarkers B. Inability to assess multiple regions C. Production of color-coded stiffness maps D. Exclusive use in obese patients
According to the article, which patient-related factor can reduce the accuracy of ultrasound elastography? A. Low blood pressure B. Body mass index greater than 30 kg/m² C. Decreased liver enzyme levels D. Young patient age
Which factor related to clinical practice contributes to variability in elastography results? A. Operator experience and training B. Use of grayscale imaging C. Patient hydration status alone D. Use of standard transducers only
Footnotes
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