Fig. 8
From: Endocavitary contrast enhanced ultrasound (CEUS): a novel problem solving technique
CEUS imaging with ultrasound contrast placed within a Chiba needle. On puncture of a hydro-nephrotic kidney reflux of contrast (A–C, arrow) is shown being ‘pushed’ out by fluid (urine) held under pressure within an obstructed renal pelvis (arrows). Ultrasound contrast is then injected along the Chiba needle to confirm correct needle position and to opacify the renal pelvis (D, arrowhead)