Contrast-enhanced ultrasound (CEUS) in renal imaging at an interdisciplinary ultrasound centre: Possibilities of dynamic microvascularisation and perfusion

Objective To identify the indications for CEUS in renal imaging in an interdisciplinary ultrasound department. Methods 102 CEUS examinations of the kidney in 82 patients between September 2014 and July 2016 were analysed regarding the indication for ultrasound. CEUS was performed by one experienced sonographer agent after bolus injection of 1.0 up to 2.4 ml sulphur hexafluoride microbubbles using multifrequency probes with Contrast Harmonic imaging. Results CEUS of the kidney was performed in patients from 20 to 87 years. 44% of the patients had a stage 3 of chronic kidney disease and higher 38% of the patients had undergone a renal transplantation. No adverse events were observed. 54% of examinations were requested by nephrologists. The remaining by surgeons, oncologists or gastroenterologists. In 47% the objectives were the evaluation of complex renal cysts, in 31% the analysis of kidney perfusion, in 19% the assessment of solid renal masses. The remaining were perirenal tumours (2%) and infection (1%). Conclusions CEUS is a good diagnostic alternative for patients with impaired renal function, complicated cysts, infections, solid renal lesions and after renal transplant.