ventriculography

noun

ven·​tric·​u·​log·​ra·​phy ven-ˌtrik-yə-ˈläg-rə-fē 

plural ventriculographies

1

: the act or process of making an X-ray photograph of the ventricles of the brain after withdrawing fluid from the ventricles and replacing it with air or a radiopaque substance

2

: the act or process of making an X-ray photograph of a ventricle of the heart after injecting a radiopaque substance

ventriculographic

-yə-lō-ˈgraf-ik 

adjective