Brain-in-Brain Artifact (BIBA) in a Patient with Hydranencepaly: A Case Report.

Oh,  Sang Young; Kim,  You Me; Lee,  Seung ha; Lee,  Young Seok

Journal of Korean Society of Ultrasound in Medicine 2011;30(1): 41-44.

Sang Young Oh, You Me Kim, Seung ha Lee, Young Seok Lee

¹Department of Radiology, College of Medicine Dankook University Hospital, Cheonan, Korea. sirenos@hanmail.net
²Department of Biomedical Engineering, College of Medicine Dankook University, Cheonan, Korea.

Published online: March 1, 2011.

ABSTRACT

Hydranencephaly is a condition that is characterized by an absent brain mantle along with the subadjacent white matter, with replacement of the cerebral hemispheres by a thin-walled membranous sac containing CSF. During brain sonograpy in a neonate with hydranencephaly, we have found a brain-in-brain appearance as an unusual sonographic artifact. We report here on this interesting sonographic artifact in a neonate with hydranencephaly, and this artifact was due to multipath reflection artifact of the ultrasound beam/wave, and we explain the underlying physics.

Keywords: Hydranencephaly; Ultrasonography; Artifact; Neonate