BACKGROUND Manual hyperinflation can be used to assist mucus clearance in intubated patients. The technique's effectiveness to move mucus is underpinned by its ability to generate flow bias in the direction of expiration, and this must exceed specific thresholds. It is unclear whether the inspiratory times commonly used by physiotherapists generate sufficient expiratory flow bias based on previ...

Biomechanical model of soft tissue derived from experimental measurements is critical for developing a reality-based model for minimally invasive surgical training and simulation. In our research, we focus on developing a biomechanical model of the liver under large tissue deformation. This paper presents the experimental apparatus, experimental data, and methods to model the experimental data ...

Mesh Topology Identification for Mass-Spring Models p. 50 A New Biomechanical Model Based Approach on Brain Shift Compensation p. 59 Real-Time Synthesis of Bleeding for Virtual Hysteroscopy p. 67 A Biomechanical Model of the Liver for Reality-Based Haptic Feedback p. 75 Image-Based Modelling of Soft Tissue Deformation p. 83 Individualized Geometric Model from Unorganized 3-D Points: An Applicat...

Background: Autoregulation of blood flow is a marvelous phenomenon balanc- ing blood supply and tissue demand. Although many chemically-based explanations for this phenomenon have been proposed and some of them are commonly used today, biomechanical aspects of this phenomenon was neglected. The biomechanical aspect provides insights to us to model vessel diameter changes more precisely and comp...

The biomechanical properties of soft tissue derived from experimental measurements are critical for developing a reality-based model for minimally invasive surgical training and simulation. In our research, we focus on developing a biomechanical model of the liver under large tissue deformation. This paper presents the experimental apparatus, experimental data, and formulations to model the exp...

background patients who have shoulder pain usually have compensatory or contributory deviation of shoulder motion during arm elevation. in the traditional scapulohumeral rhythm, the share of the acromioclavicular (ac) and the sternoclavicular (sc) joint movements and also the role of ac internal rotation angle are unknown. objectives the main purpose of this study was to measure and compare the...

PURPOSE To delineate the association between extent of degeneration of the disc at C5-C6, simulated in a model of the full cervical spine, and biomechanical responses of the model. METHODS A validated three-dimensional model of an intact, healthy, adult full cervical spine (C1-C7) was constructed. This model was then modified to create three models simulating mild, moderate, and severe grades...

In this paper, we present a biomechanical framework to model airflow inside the bronchus and deformations across the tracheobronchial tree, pipeline for the simulator, theory and initial steps to realize this framework on a highly parallel graphical processing unit (GPU). We discuss the main challenges expected and encountered to date. By using computational fluid dynamics (CFD) and computation...

Physics-based models of human locomotion potentially provides a useful tool for full body biomechanical analysis, provides insights into equipment designs as well as for the study of man-machine interactions. To enable such model to be used in biomechanical analysis, proper capture and input of human motion data as well as modelling parameter is needed to ensure meaningful and reliable results ...

We have developed a biomechanical vocal cord model for an anthropomorphic talking robot—the Waseda Talker Series. The model mimics the biomechanical structure of human vocal cords and is made of a soft rubber called Septon. It is able to reproduce vocal cord vibrations of the normal (modal) voice in a form similar to the human. We also developed a neural network based model for controlling the ...