echoencephalography

noun

echo·​en·​ceph·​a·​log·​ra·​phy -in-ˌsef-ə-ˈläg-rə-fē 

plural echoencephalographies

: the use of ultrasound to examine and measure internal structures (as the ventricles) of the skull and to diagnose abnormalities and disease

echoencephalographic

-ˌsef-ə-lə-ˈgraf-ik 

adjective