Acrania and cervical neural tube defect S. Manohar, MD, DMRD. Article Published: May 5, 2009 India. Case report The following images show a case of acrania combined with a cervical neural tube defect well depicted on 3D images. Images 1, 2: 15 weeks of pregnancy; the images show longitudinal scans of the fetus with acrania (arrow). Images 3, 4: 15 weeks of pregnancy; the images represent 3D scans of the fetal cervical spine with large opened neural tube defect. Discussion Board Start a discussion about this article Add bookmark Bookmarked