OP21.05: Appearance of the posterior fossa in fetuses with spina bifida between 11 + 3 and 13 + 6 weeks of gestation by three dimensional sonography

2011 ◽  
Vol 38 (S1) ◽  
pp. 117-117
Author(s):  
M. A. Scheier ◽  
M. Pětroš ◽  
R. Lachmann
Keyword(s):  
Spina Bifida ◽  
Posterior Fossa ◽  
Three Dimensional

scholarly journals Three-dimensional sonography of the posterior fossa in fetuses with open spina bifida at 11-13 weeks' gestation

2011 ◽  
Vol 38 (6) ◽  
pp. 625-629 ◽  
Author(s):  
M. Scheier ◽  
R. Lachmann ◽  
M. Pětroš ◽  
K. H. Nicolaides
Keyword(s):  
Spina Bifida ◽  
Posterior Fossa ◽  
Three Dimensional ◽  
Open Spina Bifida

scholarly journals OC160: Three-dimensional ultrasonography is of limited value in diagnosing fetal spina bifida

2007 ◽  
Vol 30 (4) ◽  
pp. 416-416 ◽  
Author(s):  
A. Carletti ◽  
T. Ghi ◽  
M. Ceccarini ◽  
S. Gabrielli ◽  
A. Perolo ◽  
...  
Keyword(s):  
Spina Bifida ◽  
Three Dimensional

Three-Dimensional Gait Analysis in Spina Bifida

1996 ◽  
pp. 786-791 ◽  
Author(s):  
C. M. Duffy ◽  
A. E. Hill ◽  
A. P. Cosgrove ◽  
I. S. Corry ◽  
R. A. B. Mollan ◽  
...  
Keyword(s):  
Spina Bifida ◽  
Gait Analysis ◽  
Three Dimensional

A Diagnostic Approach for the Evaluation of Spina Bifida by Three-dimensional Ultrasonography

2002 ◽  
Vol 21 (6) ◽  
pp. 619-626 ◽  
Author(s):  
Wesley Lee ◽  
Tinnakorn Chaiworapongsa ◽  
Roberto Romero ◽  
Rosa Williams ◽  
Beverley McNie ◽  
...  
Keyword(s):  
Spina Bifida ◽  
Three Dimensional ◽  
Diagnostic Approach

scholarly journals Anatomical localization of the transverse-sigmoid sinus junction: Comparison of existing techniques

2019 ◽  
Vol 10 ◽  
pp. 186 ◽  
Author(s):  
Samuel Hall ◽  
Yee-Chiung (Peter) Gan
Keyword(s):  
Posterior Fossa ◽  
Three Dimensional ◽  
Transverse Sinus ◽  
Sigmoid Sinus ◽  
Cranial Computed Tomography ◽  
Anatomical Landmarks ◽  
Qualitative And Quantitative ◽  
Computed Tomography Images ◽  
Contrast Enhanced ◽  
Anatomical Localization

Background: Anatomical localization remains integral to neurosurgery, particularly in the posterior fossa where neuronavigation is less reliable. There have been many attempts to define the location of the transverse- sigmoid sinus junction (TSSJ) using anatomical landmarks, to aid in the placement of the “strategic burr hole” during a retrosigmoid approach. There is a paucity of research allowing direct comparison of such techniques. Methods: Using high-resolution contrast-enhanced cranial computed tomography images, we constructed three-dimensional virtual cranial models. Fifty models (100 sides) were created from a retrospective sample of images performed in a New Zealand population. Ten methods of anatomical localization were applied to each model allowing qualitative and quantitative comparisons. The “key point” was defined as the point on the outer surface of the skull that directly overlaid the junction of the posterior fossa dura, transverse sinus (TS), and sigmoid sinus (SS). The proximity of each method to this “key point” was compared quantitatively, in addition to other descriptive observations. TSSJ localization methods analyzed included: (1) asterion; (2) emissary foramen; (3) Lang and Samii; (4) Day; (5) Rhoton; (6) Avci; (7) Ribas; (8) Tubbs; (9) Li; and (10) Teranishi. Results: Mean distance to the “key point” showed two tiers of accuracy, those <10 mm, and those >10 mm: Li (6.3 mm), Ribas (6.6 mm), Tubbs (6.8 mm), Teranishi (7.8 mm), Day (8.4 mm), emissary foramen (12.0 mm), Avci (13.0 mm), asterion (13.9 mm), Lang and Samii (15.6 mm), and Rhoton (17.4 mm). The asterion would most frequently overlie the TS (63%) and was often supratentorial (14%). Conclusion: Each method has a unique profile of dura or sinus exposure. There are significant differences in the accuracy of localization of the TSSJ among anatomical localization methods.

scholarly journals EP07.21: First trimester sonographic diagnosis of posterior fossa abnormalities: reference ranges and associated findings in fetuses with open spina bifida

2019 ◽  
Vol 54 (S1) ◽  
pp. 274-275
Author(s):  
R. Garcia Rodriguez ◽  
A. Romero Requejo ◽  
R. Garcia‐Delgado ◽  
J. Segura Gonzalez ◽  
M. De Luis Alvarado ◽  
...  
Keyword(s):  
Spina Bifida ◽  
Posterior Fossa ◽  
First Trimester ◽  
Reference Ranges ◽  
Sonographic Diagnosis ◽  
Open Spina Bifida
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