RESEARCH & PROJECTS

Home-Based Therapy After Stroke Using the Hand Spring Operated Movement Enhancer (HandSOME II)

December 2021 – Frontiers in Neurorobotics 
Rafael Casas; Tianyao Chen; Peter S. Lum

A tracking device for a wearable high-DOF passive hand exoskeleton

November 2021 – 43rd Annual International Conference of the IEEE Engineering in Medicine &  
Rafael Casas; Kaelin Martin, Melissa Sandison, Peter S. Lum

Pilot Test of Dosage Effects in HEXORR II for Robotic Hand Movement Therapy in Individuals With Chronic Stroke

October 2021 – Frontiers in Rehabilitation Sciences
Ji Chen;  IIan Black, Diane Nichols, Tianyao Chen, Melissa Sandison, Rafael Casas; Peter S. Lum

Clinical test of a wearable, high DOF, spring powered hand exoskeleton (HandSOME II)

September 2021 – IEEE transactions on neural systems and rehabitation
Rafael Casas; Melissa Sandison, Tianyao Chen, Peter S. Lum

Conceptualizing the Experience of Exoskeletons in Home Hand Rehabilitation After Stroke

December 2020 – Archives of Physical Medicine and Rehabilitation 
Manon Schladen, Yiannis Koumpouros, Rafael Casas, Melissa Sandison,  Peter S. Lum

Conceptualization of Hand-TaPS to measure the subjective experience of dynamic hand orthoses in promoting functional recovery at home after stroke

November 2020 – Technology and Disability
Manon Schladen, Yiannis Koumpouros, Melissa Sandison, Rafael Casas; Peter S. Lum

HandMATE: Wearable Robotic Hand Exoskeleton and Integrated Android App for At Home Stroke Rehabilitation

July 2020 – 42nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)
Melissa Sandison; Khue Phan; Rafael Casas; Lan Nguyen; Michael Lum; Peter S. Lum

An Elbow Exoskeleton for Upper Limb Rehabilitation With Series Elastic Actuator and Cable-Driven Differential

August 2019 – IEEE TRANSACTIONS ON ROBOTICS 
Tianyao Chen;  Rafael Casas; Peter S. Lum

Comparison of Two Series Elastic Actuator Designs Incorporated into a Shoulder Exoskeleton

June 2019 – Conference: 2019 IEEE 16th International Conference on Rehabilitation Robotics (ICORR) 
Rafael Casas; Tianyao Chen; Peter S. Lum

MR brain volumetric measurements are predictive of neurobehavioral impairment in the HIV-1 transgenic rat

November 2017 – NeuroImage: Clinical. Volume 17, 2018, Pages 659–666 
Rafael Casas, Siva Muthusamy, Paul G. Wakim, Sanhita Sinharay, Margaret R. Lentz,William C. Reid, Dima A. Hammoud

Characterization of neuropathology in the HIV-1 transgenic rat at different ages

February 2016 – Journal of Neuroimmunology. Volume 292, 15 March 2016, Pages 116–125
William Reid; Wael G Ibrahim; Saejeong J Kim; Rafael Casas; Frank Denaro; Dianne Lee; Dragan Maric; Dima Hammoud, MD

Neurobehavioral abnormalities in the HIV-1 Transgenic rat do not correlate with neuronal hypometabolism on 18F-FDG-PET

March 2016 – PLoS One. 2016; 11(3): e0152265
William C. Reid*, Rafael Casas*, Georgios Z. Papadakis, Siva Muthusamy, Dianne E. Lee, Wael G. Ibrahim, Deloris Koziol, Dragan Maric, Dima A. Hammoud

Spatial Context Learning Approach to Automatic Segmentation of Pleural Effusions in Chest Compute Tomography Images

March 2016 – Conference Paper – SPIE Medical Imaging 2016
Awais Mansoor and Rafael Casas Jr. and Marius G. Lingurarua States

Revisiting noise models in small-animal PET

January 2015 – Journal of Nuclear Medicine 56.supplement 3 (2015): 2601-2601
Awais Mansoor, Rafael Casas

Electrical resistivity of cortical bone: Micromechanical modeling and experimental verification

January 2013 – International Journal of Engineering Science 62, 106-112
Rafael Casas, Igor Sevostianov

The Cross-Property Connection between Mechanical Properties and Electrical Conductivity of Cortical Bone

May 2012 – Master’s Thesis

This study was designed to expand the base of knowledge of bone modeling. The correlations are of value to various medical practices that include bone grafting and bone remodeling through electrical stimulation. Experiments were followed by mechanical bending tests that provided the force load applied and deflection of cortical bone specimens.  Micromechanical modeling was involved in determining conductivity of the bone based off its inhomogeneities. Research on the microstructure emphasizes the importance of this aspect to both electrical and mechanical properties and provide for further experimentation on identifying direct electrical relations with density, and mechanical properties.

  • Designed and fabricated tools necessary to conduct experiments
  • Independent study led to the development of analytical methodology and mathematical modeling
  • Electrical conductivity values were correlated with Young’s Modulus and ultimate bending strength
  • Received accolades during defense process for originality of research protocol and analytical prowess regarding the microstructure of cortical bone tissue.  Recommended to publish findings

Energy Efficient Windows                                                                                                                         (Spring 2010)

The goal of this project was to develop an energy efficient solution for windows of low income families.  Team was directly involved in developing and coordination the execution of material/process characterization and validation plans of an existing product.  Including working with the customer to understand their product needs, modifications based off thermodynamics concepts were successfully adapted at an affordable quotation.

Medical Patient Transfer Device                                                                                                             (Spring 2009)

Project was focused on creating an innovative medical solution for better patient outcome.  Group responsibilities consisted of careful review of existing devices that were compliant with FDA guidelines, along with registered patents.  Innovation of ideas led to the design, development, and manufacturing of a successful hydraulic patient transfer system.

SCIENTIFIC PRESENTATIONS

Neurobehavioral and volumetric brain MRI Imaging Biomarkers of neurodegeneration in the HIV-1 WMIC_2016Transgenic Rat

Conference Presentation – World Molecular Imaging Congress (WMIC’16)

Authors: Rafael Casas, Siva Muthusamy, Dima A. Hammoud

Longitudinal Whole Brain and Subregional Volumetry in the HIV-Transgenic RatEMBC_2016

Conference Presentation – IEEE Engineering in Medicine and Biology Society (EMBC’16)

Authors: Rafael Casas, Siva Muthusamy, Dima A. Hammoud

Semi-Automated Elastic Registration Method to Determine Variations in Brain Volume in a Small Rafael Poster Semi Automated method RC 4_24Animal Model of HIV Infection

NIH Postbac Poster Day, May 2014 – Outstanding Poster Award

Authors: R. Casas, K. Peterson, W. Reid, W. Ibrahim, D.Lee, M.Lentz, D.Hammoud

The Effect of Focused Microwave Energy on Native Tooth Structure 

Conference Presentation – AADR Annual Meeting & Exhibition 2014

Authors: R. Casas, G.D. Arndt, D. Byerly, J. Dusl, R. Rubinovitz, M. Sognier, and I. Stangel

The Cross-Property Connection between Mechanical Properties and Electrical Conductivity of Cortical Bone  Bones Cover Photo

Dissertation – New Mexico State University – May 2012

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