Strobl S, et al. - Authors pursued a comparison of the findings of ultrasound (US) with dual-energy CT (DECT) findings in patients presenting with suspected gouty knee arthritis. The enrollment consisted of 65 patients (52 men and 13 women; median age, 61.7 years [range, 38–87 years]) with an initial clinical diagnosis of acute gouty knee arthritis who underwent DECT performed using a 128-MDCT scanner and US performed using a 5-18–MHz transducer. Findings displayed the limited sensitivity of US for the diagnosis of gouty knee arthritis, especially in terms of extraarticular urate deposition. It was inferred that the double contour sign served as the single most valuable sign for the analysis of gouty knee arthritis by US.