Contrast agent backlog

Bin aber kein Mediziner, vielleicht gibt es ja noch einen anderen Ausdruck.

Reflux of contrast medium into the IVC and subsequently the hepatic veins, seen on computed tomography pulmonary angiography (CTPA), has been associated with RV dysfunction secondary to acute PE.

[edit: Not sure of the relevance of the link in #1]

Thank you both!