Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- Fluoroscopy (2)
- 4D CT (1)
- Biomechanical model (1)
- Biomechanics (1)
- Computed tomography (1)
-
- Epileptic seizure (1)
- Finite element method (1)
- Foot (1)
- Gyroscopes (1)
- Hindfoot (1)
- Human body modeling (1)
- Inertial measurement (1)
- Joint torque estimation (1)
- Kinematics (1)
- Lyapunov exponent (1)
- Multi-body dynamics (1)
- Orthotics (1)
- Poincaré map (1)
- Pronation (1)
- Radiostereometric analysis (RSA) (1)
- Seizure detection. (1)
- Sensor placement optimization (1)
- Subtalar joint neutral (1)
- Tissue deformation (1)
- Tissue incompressibility variation (1)
- Tumor motion tracking (1)
Articles 1 - 4 of 4
Full-Text Articles in Engineering
Optimal Inertial Sensor Placement And Motion Detection For Epileptic Seizure Patient Monitoring, Babak Kamalizonouzi
Optimal Inertial Sensor Placement And Motion Detection For Epileptic Seizure Patient Monitoring, Babak Kamalizonouzi
Electronic Thesis and Dissertation Repository
Use of inertial sensory systems to monitor and detect seizure episodes in patients suffering from epilepsy is investigated via numerical simulations and experiments. Numerical simulations employ a mathematical model that is able to predict human body dynamic responses during a typical epileptic seizure. An optimized inertial sensor placement procedure is developed to address achievement of highest possible sensing resolution in determining angular accelerations with minimal errors. In addition, a joint torque estimation procedure is formulated to assist in the future development of a possible detection scheme. Experimental motion data obtained from an epileptic seizure patient as well as a healthy …
Biomechanical Modeling For Lung Tumor Motion Prediction During Brachytherapy And Radiotherapy, Zahra Shirzadi
Biomechanical Modeling For Lung Tumor Motion Prediction During Brachytherapy And Radiotherapy, Zahra Shirzadi
Electronic Thesis and Dissertation Repository
A novel technique is proposed to develop a biomechanical model for estimating lung’s tumor position as a function of respiration cycle time. Continuous tumor motion is a major challenge in lung cancer treatment techniques where the tumor needs to be targeted; e.g. in external beam radiotherapy and brachytherapy. If not accounted for, this motion leads to areas of radiation over and/or under dosage for normal tissue and tumors. In this thesis, biomechanical models were developed for lung tumor motion predication in two distinct cases of lung brachytherapy and lung external beam radiotherapy. The lung and other relevant surrounding organs geometries, …
Investigation Of In-Vivo Hindfoot And Orthotic Interactions Using Bi-Planar X-Ray Fluoroscopy, Kristen M. Bushey
Investigation Of In-Vivo Hindfoot And Orthotic Interactions Using Bi-Planar X-Ray Fluoroscopy, Kristen M. Bushey
Electronic Thesis and Dissertation Repository
A markerless RSA method was used to determine the effect of orthotics on the normal, pes planus and pes cavus populations. Computed tomography (CT) was used to create bone models that were imported into the virtual environment. Joint coordinate systems were developed to measure kinematic changes in the hindfoot during weight-bearing gait and quiet standing. The objectives of this thesis were to (1) implement a fluoroscopy-based markerless RSA system on the foot, (2) determine the effect of various orthotics at midstance of fully weight-bearing dynamic gait, and (3) determine the effect of orthotics as measured using three different techniques. Every …
In-Vivo Investigation Of The Medial Longitudinal Arch Of The Foot And Orthotic Interactions Using Bi-Planar Fluoroscopy, Megan E.R. Balsdon
In-Vivo Investigation Of The Medial Longitudinal Arch Of The Foot And Orthotic Interactions Using Bi-Planar Fluoroscopy, Megan E.R. Balsdon
Electronic Thesis and Dissertation Repository
Orthotic devices are a conservative treatment for common disorders of the foot and ankle such as pes planus and pes cavus. It is thought that orthotics change the kinematics of the foot by applying forces and constraint on the plantar surface, which can act to change body biomechanics and correct for malalignment in the legs and trunk. This thesis compares the angle of the medial longitudinal arch (MLA) between three foot types: pes planus (low arch), pes cavus (high arch) and normal arch, during barefoot and shoed walking, and walking with orthotics. In-vivo bi-planar fluoroscopy was used with markerless radiostereometric …