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Three-dimensional (3D) analysis of the deforming airway during tidal breathing has not been performed in children with obstructive sleep apnea. We used volume-gated magnetic resonance images to segment, surface, and volume mesh the airway of one child with obstructive sleep apnea syndrome (OSAS) and one control. A computational fluid dynamics (CFD) study was performed on each airway at flow rates...
Osteocytes exhibit solid-like viscoelastic behavior in response to mechanical stresses. The goal of this study was to determine the viscoelastic properties of osteocytes using a combined finite element analysis (FE) modeling and experimental approach. The three-dimensional (3D) cell shape of the osteocyte under fluid flow was reconstructed using using a novel pseudo-3D microscopy technique. The cell...
Osseointegration is critical for implant fixation, and mechanical stimuli play a role in this process. Our long term goal is to investigate the relationship between local mechanical environment and osseointegration. In this paper, as a first step in the study, we constructed an approximate 3D model of the in-vivo test and focused on calculating the strain fields around the implant. We first demonstrated...
This study investigated whether manipulated visual feedback can affect neural activations while observing interactions in a virtual environment. Twelve healthy, right-handed subjects performed sequential finger flexions during functional MRI scanning. An MRI-compatible data glove was used to measure joint angles and to animate the movement of virtual hands in real time. Visual feedback of hand movement...
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