Radiology
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Full Text (PDF)
Right arrow Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when eLetters are posted
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Laing, F. C.
Right arrow Articles by Doubilet, P. M.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Laing, F. C.
Right arrow Articles by Doubilet, P. M.

Radiology, Vol 192, 247-251, Copyright © 1994 by Radiological Society of North America

ARTICLES

Sonography of the fetal posterior fossa: false appearance of mega- cisterna magna and Dandy-Walker variant

FC Laing, MC Frates, DL Brown, CB Benson, DN Di Salvo and PM Doubilet
Department of Radiology, Brigham and Women's Hospital, Boston, MA 02115.

PURPOSE: To establish that incorrect scanning of the fetal posterior fossa may falsely create the appearance of a mega-cisterna magna (MCM) or Dandy-Walker variant (DWV). MATERIALS AND METHODS: After routine sonography, 100 consecutive fetuses (gestational age range, 25-40 weeks) without abnormality underwent additional posterior fossa scanning in an attempt to create the appearance of an MCM (anteroposterior diameter larger than 10 mm) or DWV. Sonograms were obtained in a plane inferior to or angled more coronally than the routine axial plane. RESULTS: The posterior fossa was depicted in 93 fetuses. Pseudo-MCM occurred in 35 (38%) of 93 fetuses: 12 (30%) of 40 fetuses aged 25.0-29.9 weeks, 11 (50%) of 22 fetuses aged 30.0-34.9 weeks, and 12 (39%) of 31 fetuses aged 35.0-40.0 weeks. Pseudo-DWV occurred in 40 (43%) of 93 fetuses: 20 (50%) of 40 fetuses aged 25.0- 29.9 weeks, 12 (55%) of 22 fetuses aged 30.0-34.9 weeks, and eight (26%) of 31 fetuses aged 35.0-40.0 weeks. CONCLUSION: Sonography of the posterior fossa in an angled semi-coronal plane should be avoided because it may create an appearance that mimics an abnormality.


This article has been cited by other articles:


Home page
 Am. J. Roentgenol.Home page
C. Limperopoulos, R. L. Robertson Jr., O. S. Khwaja, C. D. Robson, J. A. Estroff, C. Barnewolt, D. Levine, D. Morash, L. Nemes, L. Zaccagnini, et al.
How Accurately Does Current Fetal Imaging Identify Posterior Fossa Anomalies?
Am. J. Roentgenol., June 1, 2008; 190(6): 1637 - 1643.
[Abstract] [Full Text] [PDF]

Home page
 J Ultrasound MedHome page
I. Goldstein, I. R. Makhoul, A. Tamir, B.-S. Rajamim, and D. Nisman
Ultrasonographic Nomograms of the Fetal Fourth Ventricle: Additional Tool for Detecting Abnormalities of the Posterior Fossa
J. Ultrasound Med., August 1, 2002; 21(8): 849 - 856.
[Abstract] [Full Text] [PDF]

Home page
 J Ultrasound MedHome page
K. Tsao, N. A. Chuang, R. A. Filly, A. J. Barkovich, and R. B. Goldstein
Entrapped Fourth Ventricle: Another Pitfall in the Prenatal Diagnosis of Dandy-Walker Malformations
J. Ultrasound Med., January 1, 2002; 21(1): 91 - 96.
[Full Text] [PDF]

Home page
 RadioGraphicsHome page
D. N. Di Salvo
A New View of the Neonatal Brain: Clinical Utility of Supplemental Neurologic US Imaging Windows
RadioGraphics, July 1, 2001; 21(4): 943 - 955.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Neuroradiol.Home page
E. M. Simon, R. B. Goldstein, F. V. Coakley, R. A. Filly, K. C. Broderick, T. J. Musci, and A. J. Barkovich
Fast MR Imaging of Fetal CNS Anomalies in Utero
AJNR Am. J. Neuroradiol., October 1, 2000; 21(9): 1688 - 1698.
[Abstract] [Full Text]

Home page
 Am. J. Roentgenol.Home page
M. M. Stazzone, A. M. Hubbard, L. T. Bilaniuk, M. P. Harty, J. S. Meyer, R. A. Zimmerman, and S. Mahboubi
Ultrafast MR Imaging of the Normal Posterior Fossa in Fetuses
Am. J. Roentgenol., September 1, 2000; 175(3): 835 - 839.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Roentgenol.Home page
J. A. Luna and R. B. Goldstein
Sonographic Visualization of Neonatal Posterior Fossa Abnormalities Through the Posterolateral Fontanelle
Am. J. Roentgenol., February 1, 2000; 174(2): 561 - 567.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
RADIOLOGY RADIOGRAPHICS RSNA JOURNALS ONLINE
Copyright © 1994 by the Radiological Society of North America.