What imaging is being done on hydranencephaly?

Depends: I assume you mean hydrocepahlus - aka "water on the brain". This is a condition with an abnormality in cerebrospinal fluid flow/production and results in increased pressure within the ventricular system. This can occur in infancy and is noted with a rapidly enlarging head, but can be acquired after infection or trauma/bleeding in the brain usually an head ultrasound or ct is done.

Hydranencephaly is…: Rare condition in which the brain's cerebral hemispheres are absent and replaced by sacs filled with cerebrospinal fluid. Mri may be best imaging format. See following nih site for more info on this condition http://www.Ninds.Nih.Gov/disorders/hydranencephaly/hydranencephaly.Htm.

Simple works: Hydranencephaly is often detected today by random ultrasound performed during an otherwise routine pregnancy. Many sophisticated methods can confirm this after birth but the simple one also works. The skull of a hydranencephalic newborn is thin will light up like a lantern in a dark room if a dark light is placed against the back of the skull.Investing with more expensive imaging is unnecessary.