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.
2Department of Biomedical Engineering, College of Medicine Dankook University, Cheonan, Korea.
  Published online: March 1, 2011.
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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