Operations Research, Systems Engineering and Industrial Engineering Commons^™

Wear Characteristics Of Wright State University Total Ankle Replacement Under Shear And Torsion Loads, Tarun Goswami

Biomedical, Industrial & Human Factors Engineering Faculty Publications

Introduction: Total ankle replacement (TAR) involves replacement of the damaged bone with prosthetic components and is usually performed in patients suffering with arthritis to relieve pain and maintain motion. There are several different factors that contribute to failure of TARs but aseptic loosening is the primary method of failure in total ankle replacements. Because of its superior mechanical properties UHMWPE is used as a liner material in TARs. Wear generated from the liner due to high contact stresses during gait causes osteolysis resulting in early loosening of the prostheses.

Most of the earlier studies have focused on wear due to …

Effect Of Anthropometric Adjustments On Bmd And Bmc Z-Scores In A Population Of Prader-Willi Syndrome Pediatric Patients, Amanda E. Marker, David F. Short, Talia Eldar-Geva, Harry J. Hirsch, Varda Gross-Tsur, Maayan Tiomkin, Ari Zimran, Thomas N. Hangartner

Biomedical, Industrial & Human Factors Engineering Faculty Publications

Two adjustment models were applied to a dataset of bone-mineral density (BMD) and bone-mineral content (BMC) from dual-energy x-ray absorptiometry (DXA) measurements of pediatric patients with Prader-Willi Syndrome (PWS). One model used weight, height and % body fat (WHF) in the calculation of Z-scores in addition to race, sex and age already included in the standard model. As percent body fat is not always available, a second model with only weight and height was also examined (WH).

A Practical Guide To An Fmri Experiment, Nasser H. Kashou

Biomedical, Industrial & Human Factors Engineering Faculty Publications

Functional Magnetic Resonance Imaging (fMRI) has been around for two decades and research in this field has been exponentially rising. Much of this research has been dominated by basic science. Recent trends have brought the clinical realm into play in which valuable contributions can still be made. Helping the clinician understand the basic concepts behind an fMRI experiment is crucial to further developing and evaluating functional paradigms and research. Critical to designing an fMRI experiment is understanding the related physics and how fine tuning scanning parameters affects the image quality, which in turn affect the findings of an fMRI study. …

Rheological Model Of Force Transmission Through The Helmet And Concussion Sensitivity, Isiah Kendall, Anthony Vicini, Tarun Goswami

Biomedical, Industrial & Human Factors Engineering Faculty Publications

In contact sports, head-to-head collisions can lead to concussions, which pose serious health risks to players. This research aims to understand the force transfer from the helmet to the brain that causes concussions in collisions using a rheological model. Experimental data was gathered from players in the National Football League and testing of one type of helmet and padding. The rheological model was verified with published data and good correlation was achieved. Further sensitivity analysis of concussion risk was performed with respect to force, body weight, mass, and impact duration fit to normal and Weibull distributions using Monte Carlo simulations …

Interpolation-Based Super-Resolution Reconstruction: Effects Of Slice Thickness, Amir Pasha Mahmoudzadeh, Nasser H. Kashou

Biomedical, Industrial & Human Factors Engineering Faculty Publications

Standard clinical magnetic resonance imaging (MRI) is acquired in two-dimensions where the in-plane resolution is higher than the slice select direction. These acquisitions include axial, coronal, and sagittal planes. To date, there have been few attempts to combine the information of these three orthogonal orientations. This paper aims to take advantage of the different in-plane resolution acquired from each plane orientation and combine them into one volume in order to attain a higher resolution image. This combination of MRI data will allow the detection of smaller areas that would otherwise be missed using only one slice orientation. A comparison of …