Fig. 4From: High resolution, 3-dimensional Ferumoxytol-enhanced cardiovascular magnetic resonance venography in central venous occlusionPre-procedural venous mapping in a 55 year old male patient. 3 T FE-CMRV source image (a) and color 3D volume rendering (b-d) show thrombosis at the confluence of the common iliac veins (red arrow in a) with extensive collaterals (white arrowheads in b-d) and an enlarged azygos vein (white arrow in b) draining to the superior vena cavaBack to article page