Journal of Korean Society of Ultrasound in Medicine 2011;30(1): 41-44.
Brain-in-Brain Artifact (BIBA) in a Patient with Hydranencepaly: A Case Report.
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
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