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Type: Artigo
Title: 3-d Simulation Of Posterior Fossa Reduction In Chiari I
Author: Fernandes
Yvens Barbosa; Mendonca Perestrelo
Pedro Fabio; Noritomi
Pedro Yoshito; Mathias
Roger Neves; Lopes da Silva
Jorge Vicente; Joaquim
Andrei Fernandes
Abstract: We proposed a 3D model to evaluate the role of platybasia and clivus length in the development of Chiari I (CI). Using a computer aided design software, two DICOM files of a normal CT scan and MR were used to simulate different clivus lengths (CL) and also different basal angles (BA). The final posterior fossa volume (PFV) was obtained for each variation and the percentage of the volumetric change was acquired with the same method. The initial normal values of CL and BA were 35.65 mm and 112.66 degrees respectively, with a total PFV of 209 ml. Ranging the CL from 34.65 to 29.65 - 24.65 - 19.65, there was a PFV decrease of 0.47% - 1.12% - 1.69%, respectively. Ranging the BA from 122.66 degrees to 127.66 degrees - 142.66 degrees, the PFV decreased 0.69% - 3.23%, respectively. Our model highlights the importance of the basal angle and clivus length to the development of CI.
Subject: Chiari I
Clivus Length
Tonsillar Herniation
3d Computational Model
Editor: Assoc Arquivos Neuro- Psiquiatria
São Paulo
Rights: aberto
Identifier DOI: 10.1590/0004-282X20160041
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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