Balloon occlusion to minimize outflow and more embolization with ethanol from microcatheter inserted from the balloon catheter. ( Transcranial Doppler ultrasound. Works by using audio waves to ascertain the speed of blood flow through your brain. 37.Shin B S, Do Y S, Cho H S et al. Cardiovascular results and https://www.sgvascularctr.com/understanding-venous-malformation-treatments-in-singapore/