Refraction artifact on abdominal sonogram.

Area of Science:

• Medical Imaging Physics
• Diagnostic Ultrasound
• Radiology

Background:

• Ultrasonography (US) is the primary imaging modality for abdominal examinations.
• Refraction artifacts (RAs) are common and often misunderstood, impacting diagnostic accuracy.
• Many practitioners lack sufficient knowledge of RA generation and interpretation.

Purpose of the Study:

• To review representative refraction artifacts encountered in clinical abdominal US.
• To explain the underlying mechanisms of RAs, utilizing computer simulations.
• To enhance understanding of RA impact across various US techniques.

Main Methods:

• Compilation of representative clinical images demonstrating RAs.
• Explanation of RA generation mechanisms.
• Computer simulation analysis for reconstructing and visualizing RA phenomena.

Main Results:

• RAs are prevalent across B-mode, Doppler, contrast-enhanced US, and elastography.
• Computer simulations provide insights into RA formation and appearance.
• RAs significantly influence the interpretation of abdominal US images, especially around mass lesions.

Conclusions:

• A thorough understanding of US physics is essential for accurate interpretation of artifacts.
• Knowledge of RAs improves diagnostic confidence and reduces misinterpretations in abdominal US.
• Computer simulation aids in elucidating RA characteristics and their clinical significance.