Biomechanically Based Simulation of Brain Deformations for Intraoperative Image Correction: Coupling of Elastic and Fluid Models

Biomechanically Based Simulation of Brain Deformations for Intraoperative Image Correction: Coupling of Elastic and Fluid Models (2000)

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by A. Hagemann , K. Rohr , H.S. Stiehl

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Datum	Value	Source
TITLE	Biomechanically Based Simulation of Brain Deformations for Intraoperative Image Correction: Coupling of Elastic and Fluid Models	user correction - Legacy Corrections
AUTHOR NAME	A. Hagemann	user correction - Legacy Corrections
AUTHOR ADDR	Universitat Hamburg, FB Informatik, AB Kognitive Systeme,; Vogt-Kolln-Strae 30, D-22527 Hamburg, Germany	user correction - Legacy Corrections
AUTHOR NAME	K. Rohr	user correction - Legacy Corrections
AUTHOR ADDR	Universitat Hamburg, FB Informatik, AB Kognitive Systeme,; Vogt-Kolln-Strae 30, D-22527 Hamburg, Germany	user correction - Legacy Corrections
AUTHOR NAME	H.S. Stiehl	user correction - Legacy Corrections
AUTHOR ADDR	Universitat Hamburg, FB Informatik, AB Kognitive Systeme,; Vogt-Kolln-Strae 30, D-22527 Hamburg, Germany	user correction - Legacy Corrections
ABSTRACT	In order to improve the accuracy of image-guided neurosurgery, dierent biomechanical models have been developed to correct preoperative images w.r.t. intraoperative changes like brain shift or tumor resection. All existing biomechanical models simulate dierent anatomical structures by using either appropriate boundary conditions or by spatially varying material parameter values, while assuming the same physical model for all anatomical structures. In general, this leads to physically implausible results, especially in the case of adjacent elastic and uid structures. Therefore, we propose a new approach which allows to couple dierent physical models. In our case, we simulate rigid, elastic, and uid regions by using the appropriate physical description for each material, namely either the Navier equation or the Stokes equation. To solve the resulting dierential equations, we derive a linear matrix system for each region by applying the nite element method (FEM). Thereafter, the li...	user correction - Legacy Corrections
YEAR	2000	user correction - Legacy Corrections
CITATIONS	26 found	ParsCit 1.0