Hepatic Vascular Imaging, Diagnostic Criteria - Hepatic Vascular Imaging Interpretation Grayscale Compression Doppler Signal Color Doppler Portal Veins: A. Normal No intraluminal echoes; bright, echogenic borders Low velocity signal with respiratory variation Smooth fill in of color B. Thrombosis Enlarged or normal portal venous system with low level echoes within the lumen; may appear isoechoic with the liver. Decreased.. 2009. 9. 21. 이전 1 다음