Papers by Nahla M H Elsaid
Conductivity imaging is of great potential importance in many biomedical applications, such as in... more Conductivity imaging is of great potential importance in many biomedical applications, such as in the early diagnosis of breast tumors and the diagnosis and therapy planning for cardiac arrhythmia. With significant progress in conductivity imaging, there is a growing need for a quantitative noninvasive validation method.
To develop an image‐based motion‐robust diffusion MRI (dMRI) acquisition framework that is able t... more To develop an image‐based motion‐robust diffusion MRI (dMRI) acquisition framework that is able to minimize motion artifacts caused by rigid and nonrigid motion, applicable to both brain and tongue dMRI.
2019 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)
Neurology
ObjectiveTo study longitudinal recovery trajectories of white matter after sports-related concuss... more ObjectiveTo study longitudinal recovery trajectories of white matter after sports-related concussion (SRC) by performing diffusion tensor imaging (DTI) on collegiate athletes who sustained SRC.MethodsCollegiate athletes (n = 219, 82 concussed athletes, 68 contact-sport controls, and 69 non–contact-sport controls) were included from the Concussion Assessment, Research and Education Consortium. The participants completed clinical assessments and DTI at 4 time points: 24 to 48 hours after injury, asymptomatic state, 7 days after return-to-play, and 6 months after injury. Tract-based spatial statistics was used to investigate group differences in DTI metrics and to identify white-matter areas with persistent abnormalities. Generalized linear mixed models were used to study longitudinal changes and associations between outcome measures and DTI metrics. Cox proportional hazards model was used to study effects of white-matter abnormalities on recovery time.ResultsIn the white matter of con...
Magnetic Resonance Imaging
Magnetic Resonance Imaging
Biomechanics and Modeling in Mechanobiology
The Journal of the Acoustical Society of America
IEEE Transactions on Medical Imaging, 2016
2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2013
Abstract²This paper presents the first experiment of imaging anisotropic impedance using a novel ... more Abstract²This paper presents the first experiment of imaging anisotropic impedance using a novel technique called Diffusion Tensor Current Density Impedance Imaging (DT-CD-II). A biological anisotropic tissue phantom was constructed and an experimental implementation of the new method was performed. The results show that DT-CD-II is an effective way of non-invasively measuring anisotropic conductivity in biological media. The cross-property factor between the diffusion tensor and the conductivity tensor has been carefully determined from the experimental data, and shown to be spatially inhomogeneous. The results show that this novel imaging approach has the potential to provide valuable new information on tissue properties.
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Papers by Nahla M H Elsaid