Vein of Galen aneurysmal malformation at 28 postmenstrual weeks

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Vein of Galen aneurysmal malformation at 28 postmenstrual weeks Vein of Galen aneurysmal malformation at 28 postmenstrual weeks. (A) Median section of 2D power Doppler image. The abnormally dilated vein of Galen is demonstrated (left). Lateral view of 3D reconstructed power Doppler image (middle). Axial section of 2D power Doppler image (right). The abnormally dilated middle cerebral arteries (MCA) and circle of Willis (W) are demonstrated. The transverse sinus (TS) is also dilated, and the blood flow direction is in the opposite direction. (B) Median section using 2D B-flow image. The abnormally dilated vein of Galen is demonstrated (left). Lateral view of 3D reconstructed B-flow image (right). This case is a choroidal type vein of Galen malformation with aplasia of the straight sinus. Many of the arteries directly enter into the dilated vein of Galen. This anomaly is considered an abnormal arteriovenous shunt. Source: FETAL CEREBRAL CIRCULATION, Ultrasonography of the Prenatal Brain, 3e Citation: Timor-Tritsch IE, Monteagudo A, Pilu G, Malinger G. Ultrasonography of the Prenatal Brain, 3e; 2017 Available at: https://obgyn.mhmedical.com/DownloadImage.aspx?image=/data/books/2015/timor3_ach15_f014.png&sec=149928736&BookID=2015&ChapterSecID=149928611&imagename= Accessed: November 02, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved