Radiologic Physics Cases

Twinkle artifact

Twinkling artifact sign appears as a quickly fluctuating mixture of Doppler signals that imitate turbulent flow with an associated characteristic flat Doppler spectrum suggestive of noise, behind a strongly reflecting granular interface such as urinary tract stones (Figure 1) or parenchymal...
Authors: Shweta Bhatt, MD and Vikram S Dogra, MD University of Rochester, NY, USA