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Dissertations / Theses on the topic 'Voxel based analysis'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Zhang, Hanzhou. "Mesh generation for voxel-based objects." Morgantown, W. Va. : [West Virginia University Libraries], 2005. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4148.

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Thesis (Ph. D.)--West Virginia University, 2005.<br>Title from document title page. Document formatted into pages; contains x, 121 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 110-121).

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2

Chui, Hing Cheung. "Three-dimensional registration and voxel-based analysis in magnetic resonance imaging." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0006/MQ44149.pdf.

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Cacace, Anthony T., E. Mark Haake, Faith W. Akin, and Owen D. Murnane. "Vestibular-Related Traumatic Brain Injury: A Preliminary Voxel-Based Morphometry Analysis." Digital Commons @ East Tennessee State University, 2013. https://dc.etsu.edu/etsu-works/1882.

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Vestibular-related problems (dizziness, vertigo, and imbalance) are common sequelae following concussion and blast exposures that result in mild traumatic brain injury (mTBI). However, the anatomical substrate connected to these dysfunctions is not well understood. To provide a better understanding of this area, we used voxel-based morphometry (VBM) as a platform for studying vestibular-related mTBI in the human brain. Briefly, VBM is a group comparison study which evaluates structural differences in magnetic resonance (MR) images between agematched groups of individuals (11 vestibular TBI pat

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Prohaska, Steffen. "Skeleton-based visualization of massive voxel objects with network-like architecture." Phd thesis, Universität Potsdam, 2007. http://opus.kobv.de/ubp/volltexte/2007/1488/.

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This work introduces novel internal and external memory algorithms for computing voxel skeletons of massive voxel objects with complex network-like architecture and for converting these voxel skeletons to piecewise linear geometry, that is triangle meshes and piecewise straight lines. The presented techniques help to tackle the challenge of visualizing and analyzing 3d images of increasing size and complexity, which are becoming more and more important in, for example, biological and medical research. Section 2.3.1 contributes to the theoretical foundations of thinning algorithms with a discu

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5

Tedia, Saish. "Design, Analysis and Fabrication of Complex Structures using Voxel-based modeling for Additive Manufacturing." Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/89524.

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A key advantage of Additive Manufacturing (AM) is the opportunity to design and fabricate complex structures that cannot be made via traditional means. However, this potential is significantly constrained by the use of a facet-based geometry representation (e.g., the STL and the AMF file formats); which do not contain any volumetric information and often, designing/slicing/printing complex geometries exceeds the computational power available to the designer and the AM system itself. To enable efficient design and fabrication of complex/multi-material complex structures, several algorithms are

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Okubo, Gosuke. "The relationship between Aging and T1 relaxation time in deep gray matter: A voxel-based analysis." 京都大学 (Kyoto University), 2017. http://hdl.handle.net/2433/225482.

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KARANXHA, LORENA. "ACCURACY OF SPLINT VS SPLINTLESS TECHNIQUE FOR VIRTUALLY PLANNED ORTHOGNATHIC SURGERY: A VOXEL BASED THREE-DIMENSIONAL ANALYSIS." Doctoral thesis, Università degli Studi di Milano, 2019. http://hdl.handle.net/2434/703274.

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Virtual planning in orthognathic surgery has nowadays become a clinical reality and has introduced important advantages in terms of accuracy and planning duration when compared to conventional surgical planning. One of the main concerns regarding virtual planning is the method that is used to transfer the virtual surgical plan into the operation theater. With the many transferring methods proposed, the evidence is confusion regarding the accuracy of each of these methods for reliably transferring the virtual plan. Furthermore, the accuracy analysis itself, has been performed with numerous tech

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8

Woo, Vivian. "Combined application of voxel-based morphometry and magnetization transfer ratio for group analysis of magnetic resonance images." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=99549.

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Magnetic resonance imaging (MRI) is conventionally used for macroscopic qualitative observations. However, increasingly there is a need for quantitative MRI measures, which may lead to enhanced detection sensitivity. Two quantitative techniques that may be used to make neuroanatomical inferences about a population or between different populations are magnetization transfer ratio (MTR) and voxel-based morphometry (VBM).<br>VBM involves the statistical analysis of smoothed segmented white or gray matter maps to reflect increases or decreases in the probability of classifying a voxel as either wh

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9

Pérez, Ramírez María Úrsula. "Characterizing functional and structural brain alterations driven by chronic alcohol drinking: a resting-state fMRI connectivity and voxel-based morphometry analysis." Doctoral thesis, Universitat Politècnica de València, 2018. http://hdl.handle.net/10251/113164.

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El balance del cerebro se altera a nivel estructural y funcional por el consumo de alcohol y puede causar trastornos por consumo de alcohol (TCA). El objetivo de esta Tesis Doctoral fue investigar los efectos del consumo crónico y excesivo de alcohol en el cerebro desde una perspectiva funcional y estructural, mediante análisis de imágenes multimodales de resonancia magnética (RM). Realizamos tres estudios con objetivos específicos: i) Para entender cómo las neuroadaptaciones desencadenadas por el consumo de alcohol se ven reflejadas en la conectividad cerebral funcional entre redes cerebral

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10

Rai, Debbie S. "A longitudinal study of closed head injury : neuropsychological outcome and structural analysis using region of interest measurements and voxel-based morphometry." Thesis, University of Stirling, 2005. http://hdl.handle.net/1893/92.

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Background: The hippocampus and corpus callosum have been shown to be vulnerable in head injury. Various neuroimaging modalities and quantitative measurement techniques have been employed to investigate pathological changes in these structures. Cognitive and behavioural deficiencies have also been well documented in head injury. Aims: The aim of this research project was to investigate structural changes in the hippocampus and corpus callosum. Two different quantitative methods were used to measure physical changes and neuropsychological assessment was performed to determine cognitive and beha

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11

Rath, Dajana Verfasser], Klaus [Akademischer Betreuer] [Willmes, and Iring [Akademischer Betreuer] Koch. "Numerical and linguistic processing in patients after stroke : a voxel-based lesion-symptom analysis / Dajana Rath ; Klaus Willmes-von Hinckeldey, Iring Koch." Aachen : Universitätsbibliothek der RWTH Aachen, 2019. http://d-nb.info/1233600850/34.

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12

Morimoto, Emiko. "Evaluation of Focus Laterality in Temporal Lobe Epilepsy: A Quantitative Study Comparing Double Inversion-Recovery MR Imaging at 3T with FDG-PET." Kyoto University, 2014. http://hdl.handle.net/2433/189344.

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13

Braga, Aline Marques da Silva [UNESP]. "Análise quantitativa das descargas epileptiformes generalizadas e da neuroimagem de pacientes com epilepsia generalizada idiopática." Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/138325.

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Submitted by ALINE MARQUES DA SILVA BRAGA null (aline.sms@gmail.com) on 2016-04-25T12:49:55Z No. of bitstreams: 1 Tese.pdf: 9976474 bytes, checksum: 81dc65bf9ee24fbf48e0fdf4972b2582 (MD5)<br>Rejected by Felipe Augusto Arakaki (arakaki@reitoria.unesp.br), reason: Solicitamos que realize uma nova submissão seguindo as orientações abaixo: O arquivo submetido está sem a ficha catalográfica. A versão submetida por você é considerada a versão final da dissertação/tese, portanto não poderá ocorrer qualquer alteração em seu conteúdo após a aprovação. Corrija esta informação e realize uma nova

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Braga, Aline Marques da Silva. "Análise quantitativa das descargas epileptiformes generalizadas e da neuroimagem de pacientes com epilepsia generalizada idiopática." Botucatu, 2016. http://hdl.handle.net/11449/138325.

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Orientador: Luiz Eduardo Gomes Garcia Betting<br>Resumo: Fundamento: Evidências experimentais de modelos animais de crises de ausência sugerem focalidades no início das descargas generalizadas. Estudos clínicos indicam que pacientes com o diagnóstico de epilepsia generalizada idiopática (EGI) exibem anormalidades focais que envolvem o circuito tálamo-cortical no eletroencefalograma (EEG) e na neuroimagem. Objetivos: Investigar a presença de características focais nas descargas generalizadas interictais usando análise quantitativa do EEG (EEGq) e avaliar o córtex do giro do cíngulo usando múlti

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15

Lansdall, Claire Jade. "Apathy and impulsivity in frontotemporal lobar degeneration syndromes." Thesis, University of Cambridge, 2017. https://www.repository.cam.ac.uk/handle/1810/268020.

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There has been considerable progress in the clinical, pathological and genetic fractionation of frontotemporal lobar degeneration syndromes in recent years, driving the development of novel diagnostic criteria. However, phenotypic boundaries are not always distinct and syndromes converge with disease progression, limiting the insights available from traditional diagnostic classification. Alternative transdiagnostic approaches may provide novel insights into the neurobiological underpinnings of symptom commonalities across the frontotemporal lobar degeneration spectrum. In this thesis, I illust

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16

Ramin, Ettore. "Automated design of trabecular structures." Thesis, Loughborough University, 2010. https://dspace.lboro.ac.uk/2134/6378.

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Additive manufacturing technologies are enabling newfound degrees of geometrical complexity to be realised, particularly with regards to internal structures. All of these manufacturing technologies are dependant on their prior design in an appropriate electronic form, either by reverse engineering, or, primarily, by computer-aided design. Within these emerging applications is the design of scaffolds with an intricate and controlled internal structure for bone tissue engineering. There is a consensus that ideal bone scaffold geometry is evident in biological trabecular structures. In their most

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17

Reiss-Zimmermann, Martin, Michael Scheel, Markus Dengl, Matthias Preuß, Dominik Fritzsch, and Karl-Titus Hoffmann. "The influence of lumbar spinal drainage on diffusion parameters in patients with suspected normal pressure hydrocephalus using 3T MRI." Sage, 2014. https://tud.qucosa.de/id/qucosa%3A35424.

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Background: Normal pressure hydrocephalus (NPH) has been an ongoing and challenging field of research for the past decades because two main issues are still not fully understood: the pathophysiologic mechanisms underlying ventricular enlargement and prediction of outcome after surgery. Purpose: To evaluate changes in diffusion tensor imaging (DTI) derived parameters in patients with suspected normal pressure hydrocephalus before and after withdrawal of cerebrospinal fluid (CSF). Material and Methods: Twenty-four consecutive patients with clinical and radiological suspicion of NPH and 14 agemat

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Friesen, Marita Eva [Verfasser], Sebastian [Akademischer Betreuer] Kuntze, Markus [Akademischer Betreuer] Vogel, Sebastian [Gutachter] Kuntze, and Markus [Gutachter] Vogel. "Teachers' competence of analysing the use of multiple representations in mathematics classroom situations and its assessment in a vignette-based test / Marita Eva Friesen ; Gutachter: Sebastian Kuntze, Markus Vogel ; Sebastian Kuntze, Markus Vogel." Ludwigsburg : Pädagogische Hochschule Ludwigsburg, 2017. http://d-nb.info/1149252952/34.

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Wang, Hsuan-Hui, and 王宣惠. "Methodological variation of diffusion tensor based voxel-wise analysis." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/4ju749.

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碩士<br>國立陽明大學<br>生物醫學影像暨放射科學系暨研究所<br>97<br>Diffusion tensor based voxel-wise analysis (DT-VBA) has been increasingly adapted to identify subtle differences in brain white matter microstructure between various types of patient groups and control subjects. This method provides an inference of inter-group differences in white matter integrity on a voxel-wise basis in a standardized space. Spatial normalization is an important preprocessing step in DT-VBA analysis and is used to reduce inter-subject anatomical variability by registering each image volume to a standard space. Varieties of reference

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Chung, Run-Hong, and 鍾潤宏. "Stability Analysis of Voxel-based Cortical Thickness Measurement of Human Brain." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/49944863114593919652.

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碩士<br>國立中山大學<br>電機工程學系研究所<br>101<br>The cerebral cortex is gray matter tissue which covers cerebral hemispheres. In recent years, many studies reported that abnormal cortical thickness was found in several diseases of central neural system, such as multiple sclerosis, Alzheimer''s diseases, and schizophrenia. Therefore, the whole-brain measurement of cortical thickness using the non-invasive magnetic resonance imaging becomes important. However, not many algorithms were reported in the past due to the extremely complex folding structure of human cortex. In this thesis, a voxel-based

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Huang, Po-Wen, and 黃柏文. "Breast Tissue Classification based on Intra-voxel Incoherent Motion (IVIM-MRI) Histogram Analysis." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/03410761024619505572.

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碩士<br>國立中興大學<br>電機工程學系所<br>104<br>Breast cancer is an important cause of death and disease for women in the world. It is required for the diagnosis and treatment of breast cancer research. In recent years, MRI is gradually replacing the traditional X-ray photography and ultrasound to detect breast cancer as an inspection tool. MRI is not only no radiation problem but also more excellent on the image resolution and contrast. However, when MRI use on breast examination, it must be injected the contrast agent. The contrast agent is toxicity, so some patients may have an allergy to contrast agents

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22

Chiang, Hung-Yueh, and 江泓樂. "An Analysis of 3D Indoor Scene Segmentation Based on Images, Point Cloud and Voxel Data." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/pvbj47.

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碩士<br>國立臺灣大學<br>資訊工程學研究所<br>107<br>The deep learning technology has brought great success in image classiﬁcation, object detection and semantic segmentation tasks. Recent years, the advent of inexpensive depth sensors hugely motivate 3D research area and real scene reconstruction datasets such as ScanNet [5] and Matterport3D [1] have been proposed. However, the problem of 3D scene semantic segmentation still remains new and challenging due to many variance of 3D data type (e.g. image, voxel, point cloud). Other difficulties such as suffering from high computation cost and the scarcity of data

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Hoisak, Jeremy. "A Measure of Voxel Similarity for Improving the Image-based Quantification of Tissue Structure and Function." Thesis, 2012. http://hdl.handle.net/1807/32735.

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Therapeutic response assessment is a key component in adaptive image-guided radiotherapy. Conventional anatomic measures of response offer little information about the spatial distribution of tumor change. Recently developed voxel-wise response assessment methods operating on functional and biological imaging are better capable of evaluating the heterogeneity of response within the tumor, and thus may yield greater sensitivity than conventional approaches. However, voxel-wise analyses are limited by local registration uncertainties inherent to longitudinal imaging of tumors with changing morp

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Liang, Yu-Syuan, and 梁宇萱. "The alterations of pain-related brain regions in migraine without aura: Diffusion kurtosis imaging and voxel-based morphometry analysis." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/cnd4uv.

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碩士<br>高雄醫學大學<br>醫學影像暨放射科學系碩士班<br>106<br>Purpose: Specific white matter alterations in migraine have been shown in many studies. Because the sensations of pain are performed by pain matrix, the integrity of white matter near these regions might be altered in migraine patients. Diffusion tensor imaging (DTI) has been used in a lot of studies to detect white matter alterations. However, because the Gaussian assumption in DTI is not a suitable model in the intracellular microenvironment, diffusion kurtosis imaging (DKI) which considers not only the Gaussian distribution but also the non-Gaussian

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Ling-YaLiao and 廖羚雅. "The declined pattern of spatial representation translationin young onset Alzheimer’s Disease.Using voxel-based morphometry and one-year follow-up analysis." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/03792248097796462734.

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碩士<br>國立成功大學<br>行為醫學研究所<br>100<br>Background and objective:The ability of translating between spatial representations (TSR) in young-onset Alzheimer’s disease (YOAD) patients were found to be worse than late-onset (LOAD) in previous study. TSR ability was believed to be related with the retrosplenial cortex (RSC), which was more damaged in YOAD. This study aimed to see if the TSR ability declined more in YOAD than LOAD after time pass. Moreover, we used brain image to compare the atrophy pattern between AD groups. Subjects and Methods: We recruited subjects from previous study (Pai ＆ Yang, 201

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Cheng-HsunHsieh and 謝承勳. "A Study on the Relationship between Happiness and Brain Regions Based on Multi-Voxel Pattern Analysis (MVPA) and fMRI Database." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/15754342443289400303.

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碩士<br>國立成功大學<br>電機工程學系碩博士班<br>101<br>Functional magnetic resonance imaging (fMRI) has been not only commonly used to clinical trials for measuring the hemodynamic response of brain but also applied to the field of affective recognition in recent year. Based on the blood oxygen level dependent (BOLD), this work finds out the regions which are related with happiness. The proposed system includes these tasks: preprocess, multi-voxel pattern analysis (MVPA), feature selection, feature extraction, training phase with support vector machine (SVM), and testing phase with leave one out cross validatio

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Hohmann, Christoph [Verfasser]. "Kinetic analysis of dynamic MP4A PET scans of human brain using voxel based nonlinear least squares fitting / vorgelegt von Christoph Hohmann." 2009. http://d-nb.info/999497197/34.

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Moayedi, Massieh. "Structural Brain Abnormalities in Temporomandibular Disorders." Thesis, 2012. http://hdl.handle.net/1807/34816.

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Temporomandibular disorders (TMD) are a family of prevalent chronic pain disorders affecting masticatory muscles and/or the temporomandibular joint. There is no unequivocally recognized peripheral aetiology for idiopathic TMD. The central nervous system (CNS) may initiate and/or maintain the pain in idiopathic TMD due to sustained or long-term nociceptive input that induces maladaptive brain plasticity, and/or to inherent personality-related factors that may reduce the brain's capacity to modulate nociceptive activity. The main aim of this thesis is to determine whether there are structural ne

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Otaki, Yoko. "Sex differences manifested in Japanese vowel formants : a likelihood ratio-based analysis." Master's thesis, 2012. http://hdl.handle.net/1885/156410.

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This research aims to describe individual differences manifested in voice with a particular focus on the reflected individual differences within gender framework. The following is the central goal of the current research to investigate; differences in the ways and the degree of individualising information manifested in their speech acoustics between the sexes. The multi-speaker database of Japanese compiled by the National Research Institute of Police Science (Japan) was employed for the research. Out of more than 600 speakers stored in the database, 28 male and 28 female speakers were select

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