Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 16 of 16 for “"Imaging, Three-Dimensional"”.
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Molecular Structure-nonlinear Optical Property Relationships For A Series Of Polymethine And Squaraine Molecules
… laser intensity, such as two-photon fluorescence imaging, three-dimensional microfabrication, optical data storage and optical limiting, have motivated researchers to find novel materials exhibiting strong 2PA. Organic materials are promising candidates because their linear and nonlinear optical …
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Magnetic Resonance Spectroscopy Imaging of 2-Hydroxyglutarate in Brain Tumors at 3T and 7T In Vivo
… is a significant breakthrough in neuro-oncology imaging. 2HG is the first imaging biomarker that is specific to a genetic mutation in gliomas, making the diagnosis of IDH mutant gliomas possible without biopsy. 2HG also has a significant predictive value with respect to the stage and survival in …
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Chemical Structure - Nonlinear Optical Property Relationships For A Series Of Two-photon Absorbing Fluorene Molecules
… nonlinearity including two-photon fluorescence imaging, three-dimensional microfabrication, site-specific photodynamic cancer therapy and biological caging studies. The two key features of this nonlinearity which make it an ideal candidate for the above applications are its quadratic dependence …
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Interlandmark measurements from lodox statscan images with application to femoral neck anteversion assessment
… and orthodontics. X-ray images, however, overlap three-dimensional internal structures onto a two-dimensional plane during image formation. Depth information is therefore lost and measurements do not truly reflect spatial relationships. The main aim of this study was to develop an inter-landmark …
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The tectonics and three-dimensional structure of spreading centers--microearthquake studies and tomographic inversions
… the power of the tomographic method for imaging three-dimensional structure on a scale appropriate to heterogeneity along a spreading ridge axis. Chapter 3 is the first of two chapters that present the results of a microearthquake experiment carried out within the median valley of the …
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Does 3DMR Provide Equivalent Information As 3DCT for the Pre-Operative Evaluation of Adult Hip Pain Conditions of Femoroacetabular Impingement and Hip Dysplasia?
The general metadata -- e.g., title, author, abstract, subject headings, etc. -- is publicly available, but access to the submitted files is restricted to UT Southwestern campus access and/or authorized UT Southwestern users.
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Bilateral Ortohogonality Generative Acquisitions Method for Transmit Field Inhomogeneity Correction in Magnetic Resonance Imaging
Ultra-high field (>7T) magnetic resonance imaging (MRI) systems result in higher intrinsic signal to noise ratio compared to the lower field systems and have been previously utilized for acquisition of high-resolution images and reducing scan time. However, transmit field inhomogeneity of …
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Correlation of Tooth Length Measurements made on CBCT and 3T MR Images
… teeth. DICOM formatted images from each of the three scans for each subject were oriented in all three planes of space. Slices of 4 mm thickness were made through all permanent teeth. Tooth length measurements were made from the slices. Results. The presence of alginate bite registration during …
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The tectonics and three-dimensional structure of spreading centers : microearthquake studies and tomographic inversions
… the power of the tomographic method for imaging three-dimensional structure on a scale appropriate to heterogeneity along a spreading ridge axis. Chapter 3 is the first of two chapters that present the results of a microearthquake experiment carried out within the median valley of the …
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Comparison of Tooth Length Measurements Made on CBCT and 3T MR Images
… and Methods: One CBCT scan (NewTom5G, AFP Imaging, USA) and one 3T MR scan (Siemens Medical Solutions, DE) as performed on 12 subjects. CBCT images were captured with an 18x16 inch field of view that covered the whole head. Contiguous sagittal MR images of the whole head were produced in a …
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The Effect of Scan Settings on the Identification of Tooth Socket Lamina Dura Surface: A CBCT Study
<p>Aim: Cone-beam computed tomography (CBCT) is becoming a common adjunct in orthodontic diagnosis and treatment, however several questions remain about the impact of surrounding anatomical structures and varying scan settings on the ability to delineate buccal bone and overall diagnostic quality …
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The Effect of Tooth Presence on Identification of Tooth Socket Lamina Dura Surface: A CBCT Study
… bone thickness measurement. Materials & Methods: Three fresh cadaver heads were scanned using a NewTom 5G CBCT at 0.100 mm voxel size at three time-points: before extraction (T1), after extraction and reinsertion (T2), and after tooth removal (T3). Only single rooted teeth were extracted in a …
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Tooth Length Measurements on 3T MR Images: A Retrospective Study
… tooth lengths” as measured on CBCT scans. Twenty three subjects received two scans (one CBCT and one MRI). Tooth length was measured and compared between the resultant images. Intraclass correlations were used for statistical analysis. Results: Tooth length measurements made on MRI scans showed …
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A Novel Method For Determining Acetabular Orientation
… The purpose of this study was to determine the three-dimensional orientation of the entire acetabulum. For this research, an improved programmatic method was developed for determining acetabular orientation using three-dimensional data. Accurate measures of commonly used acetabular orientation …
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Motion -Compensated 3-D Generalized Series Imaging
Three-dimensional magnetic resonance (MR) imaging is highly desirable from the standpoints of minimum voxel size, volumetric coverage and signal-to-noise efficiency. Unfortunately, long scan times have traditionally precluded the use of 3-D imaging in applications where simultaneous resolution of …
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The study of a 3 3-dimentional structure of the congenital anomalous stape stapes compared with normal s stape stapes using Micro Micro-CT
… were analyzed through micro CT by filming the 2-dimensional cross section image running perpendicular to the long axis of the stapeses. The 3-dimensional images were thereby reconstructed for each, and were analyzed using CTAnalyzerTM and AntTM. Based on the results the volume fraction of each …