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Rozprawy doktorskie na temat „Micro-Computed Tomography”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 25 lipca 2025

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1

Nogueira, Rocha Clementino Luedemann Tatiana. "Micro-computed tomography in caries research." Diss., lmu, 2007. http://nbn-resolving.de/urn:nbn:de:bvb:19-70621.

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Chen, W. (Wu). "A novel detector micro-module for computed tomography." Doctoral thesis, University of Oulu, 2004. http://urn.fi/urn:isbn:9514274474.

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Abstract To realize faster and more precise treatment of patients, CT technology has an urgent demand to make the CT detector arrays larger, and to cover a larger section of the body during one scan of X-ray imaging. A novel detector micro-module is developed in this thesis to meet this demand. In the novel detector micro-module, photocurrent signals are read out from the bottom side of the photodiode array chip. By avoiding the use of the top surface of the chip for routeing, as is the case in conventional CT modules, rectangular detector building blocks containing a certain number of detecto

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Ghous, Abid Petroleum Engineering Faculty of Engineering UNSW. "Digital formation evaluation via x-ray micro-computed tomography." Awarded by:University of New South Wales. School of Petroleum Engineering, 2005. http://handle.unsw.edu.au/1959.4/20581.

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Machined fragments of 10 core plugs from oshore reservoirs have been analysed using a high resolution X-ray micro-computed tomography (micro-CT) facility. The facility includes a system capable of acquiring 3D images made up of 20003 voxels on core plugs up to 6 cm diameter with resolutions down to 2 um. The cores analysed include six cores from a gas reservoir and four cores from an oil reservoir. The cores exhibit a very broad range of pore and grain sizes, porosity, permeability and mineralogy. The petrological data, available only for gas reservoir cores, is compared with the data obtained

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Rytky, S. (Santeri). "Contrast enhanced micro-computed tomography of cartilage and chondrocytes." Bachelor's thesis, University of Oulu, 2018. http://urn.fi/URN:NBN:fi:oulu-201805312341.

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Contrast enhanced micro-computed tomography (CEμCT) is a widely used, cost-efficient method for imaging soft tissues. For articular cartilage imaging, different stains are used to assess amount of cartilage constituents. Osteoarthritis progression can be monitored using CEμCT in clinical environment and laboratory. In clinical modalities, ioxaglate (Hexabrix™) is used to indirectly assess proteoglycan content of cartilage. It is a iodine based anionic stain that has inversely proportional distribution to proteoglycan content. Collagen specific contrast agents are not in clinical use yet. In

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Amurao, Maxwell Leland Ramirez. "Investigating collagen hydration with micro computed tomography a dissertation /." San Antonio : UTHSC, 2008. http://proquest.umi.com.libproxy.uthscsa.edu/pqdweb?did=1625775011&sid=1&Fmt=2&clientId=70986&RQT=309&VName=PQD.

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Rathore, Jitendra Singh. "Computed tomography based quality optimization of micro injection molding." Doctoral thesis, Università degli studi di Padova, 2018. http://hdl.handle.net/11577/3422422.

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Micro injection molding is a well-established manufacturing techniques for mass replication of micro parts. However, a new product development requires a process optimization with respect to the desired quality criteria. From the quality aspect, there has been demands for new technologies for quality assessment of the micro products. X-ray computed tomography (CT) is an emerging technology for industrial quality control. The current project focuses on application based quality optimization of micro injection molded parts utilizing X-ray CT. Processing parameters play a significant role in the

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7

Lunel, Marie Monique France. "Structure characterisation of catalysts using X-ray micro-computed tomography." Thesis, University of Birmingham, 2015. http://etheses.bham.ac.uk//id/eprint/5710/.

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Knowledge of internal porous structure is essential in improving the development of a catalytic system and consequently leading to an optimized performance. XRCT has been used to show differences in density and pore distribution and that differences can be related to the process route by which the specimen was prepared. Alumina samples with defects prepared using different conditions have been investigated in order to acquire information on the introduction and development of cracks. Results indicated that cracks became larger when the water content, the ram speed of the extruder and the dryin

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Karhula, S. (Sakari). "Quantification of osteochondral tissue modifications during osteoarthritis using micro-computed tomography." Doctoral thesis, Oulun yliopisto, 2018. http://urn.fi/urn:isbn:9789526220963.

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Abstract Osteoarthritis (OA) is a heterogenic joint disease significantly affecting the quality of life of a patient, causing pain and disability. OA causes degenerative changes to the structure and composition of articular cartilage and subchondral bone. Currently, effective treatments for OA are limited, partly due to limitations in defining the imaging biomarkers of early OA. Improvement of imaging modalities in OA research and clinical setup is a requirement for quantitating early OA-related tissue features. In the clinical and preclinical setup, computed tomography (CT) enables imaging of

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9

Schneider, Philipp. "Ultrastructural phenotyping of murine bone using synchrotron micro- and nano-computed tomography." Zürich : ETH, 2007. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17438.

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10

Hagenmüller, Henri. "Combining micro-computed tomography monitoring and mechanical loading in bone tissue engineering /." Zürich : ETH, 2009. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=18151.

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11

Niehaus, Wilmari Lianne. "Micro-computed tomography to diagnose and quantify biofilms in central venous catheters." Thesis, University of Southampton, 2015. https://eprints.soton.ac.uk/382952/.

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Almeida, Natasha Vasiliki. "Three-dimensional features of chondritic meteorites : applying micro-computed tomography to extraterrestrial material." Thesis, Birkbeck (University of London), 2018. http://bbktheses.da.ulcc.ac.uk/303/.

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This work examines the application of X-ray computed tomography (XCT) in meteoritics. This powerful technique uses the attenuation of X-rays passing through a sample to map it in three dimensions, allowing for the imaging and quantification of phases and features without the need for destructive sampling. XCT is a novel method with its applications to planetary science only recently recognised and not extensively explored. As such, this study presents two examples of using XCT to both elucidate its potential, and better understand the constituents of chondritic meteorites and the processes exp

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13

Mairhofer, Stefan. "Extracting root system architecture from X-ray micro computed tomography images using visual tracking." Thesis, University of Nottingham, 2014. http://eprints.nottingham.ac.uk/27739/.

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X-ray micro computed tomography (µCT) is increasingly applied in plant biology as an imaging system that is valuable for the study of root development in soil, since it allows the three-dimensional and non-destructive visualisation of plant root systems. Variations in the X-ray attenuation values of root material and the overlap in measured intensity values between roots and soil caused by water and organic matter represent major challenges to the extraction of root system architecture. We propose a novel technique to recover root system information from X-ray CT data, using a strategy based o

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14

Chopra, Preeti M. "Micro-computed tomographic analysis of bone healing subsequent to graft placement." Thesis, Birmingham, Ala. : University of Alabama at Birmingham, 2006. http://www.mhsl.uab.edu/dt/2007m/chopra.pdf.

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15

Townsend, Katy Louise. "The Use of Radiographs, Dual-energy X-ray Absorptiometry, Quantitative Computed Tomography and Micro-computed Tomography to Determine Local Cancellous Bone Quality in the Canine Proximal Femur." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1336769521.

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16

Taylor, Thomas Timothy. "Detection of Regional Variation of Bone Mineralization in a Human Mandible using Computed Tomography." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1331042122.

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17

Kiyan, Wataru. "Ultrasound Parameters for Human Osteoarthritic Subchondral Bone Ex Vivo: Comparison with Micro-Computed Tomography Parameters." Kyoto University, 2019. http://hdl.handle.net/2433/236621.

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18

Fritz, Nathan K. "Micro-computed tomography for interlaminar analysis, void quantification, and feature localization in carbon fiber composites." Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/118724.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2018.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 173-180).<br>In an effort to more fully leverage the relatively rich data within x-ray micro computed tomography ([mu]CT) datasets, two automated analysis tools have been developed which limit subjectivity compared to extant CT analysis of composites. The developed tools extract micron-scale morphological information in three dimensions for laminated advanced composite structures, specifically unidirectional prep

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19

Melean, Y., Kathryn E. Washburn, P. T. Callaghan, and Christoph H. Arns. "A numerical analysis of NMR pore-pore exchange measurements using micro X-ray computed tomography." Universitätsbibliothek Leipzig, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-192412.

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Pore-pore relaxation exchange experiments are a recent development and hold great promise to spectrally derive length scales and connectivity information relevant for transport in porous media. However, for large pores, NMR diffusion-relaxation techniques reach a limit because bulk relaxation becomes dominant. A combination of NMR and Xray-CT techniques could be beneficial and lead to better models for regions of unresolved porosity in CT images, increasing the accuracy of image based calculations of transport properties. In this study we carry out numerical NMR pore-pore exchange experiments

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20

Melean, Y., Kathryn E. Washburn, P. T. Callaghan, and Christoph H. Arns. "A numerical analysis of NMR pore-pore exchange measurements using micro X-ray computed tomography." Diffusion fundamentals 10 (2009) 30, S. 1-3, 2009. https://ul.qucosa.de/id/qucosa%3A14125.

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Pore-pore relaxation exchange experiments are a recent development and hold great promise to spectrally derive length scales and connectivity information relevant for transport in porous media. However, for large pores, NMR diffusion-relaxation techniques reach a limit because bulk relaxation becomes dominant. A combination of NMR and Xray-CT techniques could be beneficial and lead to better models for regions of unresolved porosity in CT images, increasing the accuracy of image based calculations of transport properties. In this study we carry out numerical NMR pore-pore exchange experiments

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21

Wils, Patricia. "Tomographie par rayons X : correction des artefacts liés à la chaîne d'acquisition." Phd thesis, INSA de Lyon, 2011. http://tel.archives-ouvertes.fr/tel-00708545.

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L'imagerie cone-beam computed tomography (CBCT) est une méthodologie de contrôle non destructif permettant l'obtention d'images volumiques d'un objet. Le système d'acquisition se compose d'un tube à rayons X et d'un détecteur plan numérique. La recherche développée dans ce manuscrit se déroule dans le contexte industriel. L'objet est placé sur une platine de rotation et une séquence d'images 2D est acquise. Un algorithme de reconstruction procure des données volumiques de l'atténuation de l'objet. Ces informations permettent de réaliser une étude métrologique et de valider ou non la conformité

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22

Stephenson, Robert. "Micro-computed tomography for high resolution soft tissue imaging : applications in the normal and failing heart." Thesis, University of Liverpool, 2013. http://livrepository.liverpool.ac.uk/17313/.

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The normal structure and function of the heart, the common pathological changes that cause abnormal function and the interventions proposed to improve or restore its function are fundamentally based on cardiac anatomy. Therefore in all these areas a detailed and accurate understanding of 3D structure is essential. However there is still disparity over some aspects of the form and function of the healthy heart. Furthermore, in heart failure (HF) the transition from compensated to decompensated HF is poorly understood, and details of ventricular, and particularly atrial, remodelling and their ef

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23

Kizhakke, Puliyakote Abhilash Srikumar. "Comprehensive assessment and characterization of pulmonary acinar morphometry using multi-resolution micro x-ray computed tomography." Diss., University of Iowa, 2016. https://ir.uiowa.edu/etd/3120.

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The characterization of the normal pulmonary acinus is a necessary first step in understanding the nature of respiratory physiology and in assessing the etiology of pulmonary pathology. Murine models play a vital role in the advancement of current understanding of the dynamics of gas exchange, particle deposition and the manifestations of diseases such as COPD, Cystic Fibrosis and Asthma. With the advent of interior tomography techniques, high-resolution micro computed tomography (μCT) systems provide the ability to nondestructively assess the pulmonary acinus at micron and sub-micron resoluti

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Costin, Marius. "Multiresolution Image Reconstruction in X-ray Micro- and Nano- Computed Tomography : Application in Materials Non-Destructive Testing." Lyon, INSA, 2010. http://theses.insa-lyon.fr/publication/2010ISAL0034/these.pdf.

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Dans le cadre d'une large coopération internationale, le projet Saphir a comme but principal la production sure, intégrée et contrôlée de produits nano-structurés multifonctionnels. Dans ce contexte, notre contribution consiste à développer une méthode d'imagerie tridimensionnelle pour inspecter et caractériser les échantillons et les pièces fournis par les partenaires du projet. La tomographie par rayonnement X a été choisie car elle constitue une technique adaptée au contrôle non-destructif. Mais pour des échantillons très complexes présentant des détails sur plusieurs ordres de grandeur, le

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25

Hasanpour, Sadegh. "Characterization of porous transport layers of polymer electrolyte membrane fuel cells using X-ray micro-computed tomography." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/58406.

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Among different methods available for the estimation of the transport properties of porous transport layers (PTLs) of polymer electrolyte membrane fuel cells, X-ray micro-computed tomography (X-µCT) imaging has been recognized as a viable tool. This method provides the 3D structure of materials with a high resolution. Despite the general success of X-µCT, the following topics have not been explored: first, the porosity obtained for one PTL sample using different methods varies due to arbitrary assumptions made in finding the surface of PTLs. Second, the minimum volume required to obtain permea

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26

Chiu, Mei-ling Bonnie, and 趙美玲. "Preparation of curved root canals with different nickel-titanium rotary systems: three-dimensional comparisonusing micro-computed tomography." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2003. http://hub.hku.hk/bib/B31954273.

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Huang, Yan. "Structural Mapping of Paper Towels: Comparison of Twin Laser Profilometry and Synchrotron X-ray Micro-computed Tomography." Miami University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=miami1281751951.

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Guelpa, Anina. "Maize endosperm texture characterisation using the rapid visco analyser (RVA), X-ray micro-computed tomography (μCT) and micro-near infrared (microNIR) spectroscopy". Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/96967.

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Thesis (PhD (Food Sc))--Stellenbosch University, 2015.<br>ENGLISH ABSTRACT: Maize kernels consists of two types of endosperm, a harder vitreous endosperm and a softer floury endosperm, and the ratio of the vitreous and floury endosperm present mainly determines the hardness of the kernel. Maize (Zea mays L.) is a staple food in many countries, including South Africa, and is industrially processed into maize meal using dry-milling. For optimal yield and higher quality products, hard kernels are favoured by the milling industry. Despite many maize hardness methods available, a standardised

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Chiu, Mei-ling Bonnie. "Preparation of curved root canals with different nickel-titanium rotary systems three-dimensional comparison using micro-computed tomography /." Click to view the E-thesis via HKUTO, 2003. http://sunzi.lib.hku.hk/hkuto/record/B31954273.

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Schroeder, Agmar Anthony. "Micro-computed tomography analysis of post space preparation in teeth obturated with carrier-based thermoplasticized gutta percha techniques." Thesis, University of British Columbia, 2014. http://hdl.handle.net/2429/51594.

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Many dentists use the obturation technique of carrier-based thermoplasticized gutta percha. Placement of a post may be indicated for teeth in which there has been extensive loss of coronal tooth structure. This study aimed to determine if post space preparation deviated from the endodontic preparation in teeth obturated with the Thermafil, GuttaCore, or gutta percha material. Forty-two extracted human permanent maxillary lateral incisors were decoronated and their root canals instrumented with nickel-titanium rotary files using a standardized protocol. Samples were divided into three groups an

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31

Khoshkhou, Danial. "The use of synchrotron X-ray micro computed tomography to study the failure mechanisms of thermal barrier coatings." Thesis, University of Birmingham, 2017. http://etheses.bham.ac.uk//id/eprint/7817/.

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Thermal barrier coatings (TBCs) are used to protect high-pressure stage 1 turbine components in aero engines. At present the full potential high-temperature capabilities of TBCs cannot be utilised due to the difficulties in estimating the remaining useful life of in-service TBCs. State of the art non-destructive techniques, such as photo-luminescent piezospectroscopy (PLPS) have aided in furthering the understanding of damage evolution mechanism techniques, but are limited in applicability at temperature. In this work, a new force-balance model is presented for calculating the growth stress in

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32

Couves, Colette Rose. "Investigating the petrophysical properties of volcanic reservoir analogues through the use of micro-focus X-ray computed tomography." Thesis, University of Southampton, 2015. https://eprints.soton.ac.uk/396580/.

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Volcanic rocks can host significant hydrocarbon resources but are poorly understood in terms of their reservoir properties: especially their porosity and permeability characteristics. Basaltic lavas and volcaniclastic outcrops around Tenerife and basaltic lava flows from the Large Igneous Provinces of the Deccan Traps and the Faroe Islands were studied as potential “reservoir analogues” to compare with existing hydrocarbon discoveries in volcanic rocks. These studies together with the analysis of subsurface samples from South America permitted the geochemical and petrophysical properties of se

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33

Lu, Jing [Verfasser]. "Advanced Methods for the Quantification of Trabecular Bone Structure and Density in Micro Computed Tomography Images / Jing Lu." Aachen : Shaker, 2011. http://d-nb.info/1071528580/34.

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Jonsson, Åsa, and Grim Skarsgård. "Synchrotron tomography of pressboard during in-situ compression loading : Construction of compression rig, image acquisition procedure and methods for image processing." Thesis, Uppsala universitet, Tillämpad mekanik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-257276.

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Pressboard, a high density cellulose-based material used for insulation in high voltage power transformers, exhibits stress relaxation during compressive loading. Investigating the micro-mechanical mechanisms responsible for the relaxation can lead to modifications of the production process to control the behaviour of the material. This investigation can be done using Synchrotron X-ray micro Computed Tomography which provides sufficient temporal and spatial resolutions to capture the stress relaxation process. In the present thesis, a compression rig for in-situ mechanical loading during X-ray

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Stjärnesund, Johan. "A micro-CT investigation of density changes in pressboard due to compression." Thesis, Uppsala universitet, Tillämpad mekanik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-350876.

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Pressboard, a high-density cellulose-based product, is used both as load bearing structures and dielectric insulation in oil-filled power transformers. During transformer operation, mechanical forces and vibrations are applied on the material. In particular, this investigation focuses on pressboard sheets placed between the turns of transformer windings, called the spacers, which during short circuit are subjected to high compressive forces of impulse nature. As a result of these forces, remaining deformations are created in the components. One step to reduce the negative consequences that com

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36

Sen, Sharma Kriti. "Compressed Sensing based Micro-CT Methods and Applications." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/52866.

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High-resolution micro computed tomography (micro-CT) offers 3D image resolution of 1 um for non-destructive evaluation of various samples. However, the micro-CT performance is limited by several factors. Primarily, scan time is extremely long, and sample dimension is restricted by the x-ray beam and the detector size. The latter is the cause for the well-known interior problem. Recent advancement in image reconstruction, spurred by the advent of compressed sensing (CS) theory in 2006 and interior tomography theory since 2007, offers great reduction in the number of views and an increment in th

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Opie, Alexander M. T. "Contributions to spectral CT." Thesis, University of Canterbury. Electrical and Computer Engineering, 2013. http://hdl.handle.net/10092/8532.

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Spectral x-ray computed tomography (CT) is an important nascent imaging modality with several exciting potential applications. The research presented in this thesis separates into two primary areas with the common underlying theme of spectral CT; the first area is Compton scatter estimation and the second is interior tomography. First, the research is framed and outputs are identified. Background on the concepts used in the thesis is offered, including x-ray imaging and computed tomography, CT scanner architecture, spectral imaging, interior tomography and x-ray scatter. The mathematical back

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知紀, 山口, and Tomonori Yamaguchi. "Microstructural analysis of three-dimensional canal network in the rabbit lumbar vertebral endplate using high-resolution micro-computed tomography." Thesis, https://doors.doshisha.ac.jp/opac/opac_link/bibid/BB12908294/?lang=0, 2014. https://doors.doshisha.ac.jp/opac/opac_link/bibid/BB12908294/?lang=0.

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椎間板変性を引き起こす要因として、骨性終板内の栄養管狭小および軟骨終板の石灰化による椎間板への栄養供給の低下が推察されているが、椎体終板内栄養管の3次元微細構造は未だ明確にされていない。本論文は高解像度マイクロCTを用いて家兎腰椎骨性終板内栄養管の3次元微細構造を明らかにする事を目的とし、各栄養管の長さ,直径,配向及び表面からの深さを定量的に解析することでその多層構造を定量的に評価することができた。<br>Insufficient nutrient supply through vertebral canal structures to the intervertebral disc (IVD) has been considered as an important contributor for disc degeneration. In spite of this, three-dimensional (3D) topology inside the vertebral endplate remains poorly understood. This study aims to characterize the 3D canal structure in the rabbit lumbar vertebral endplate using micro computed tomo

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HAIDE, Robert Christian. "Characterization of Multi-Phase Fluid Displacement in Porous Media during Drying by means of X-Ray Micro Computed Tomography." Doctoral thesis, Università degli studi di Bergamo, 2021. http://hdl.handle.net/10446/189681.

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Lo spostamento del fluido in mezzi porosi durante la lenta essiccazione in atmosfera controllata viene esplorato a livello dei pori, utilizzando la tecnica della micro tomografia computerizzata a raggi X. A tal fine, un corpo campione regolare, poroso e di dimensioni micro-metriche, che presenta una struttura dei pori e una bagnabilità predefinite, è concepito e prodotto sulla base di una serie di esperimenti preliminari. Dopo l’infusione con acqua distillata, viene studiato il comportamento di essiccazione del campione in atmosfera controllata. Successivamente viene definita e condotta una se

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40

Agbogun, Henry Mosimabale. "Three-Dimensional Measurement of Porosity and Solute-Concentration Distributions during Diffusion in Porous Geologic Media Using X-ray Micro-Computed Tomography." Thesis, Fredericton: University of New Brunswick, 2011. http://hdl.handle.net/1882/36022.

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41

King, Shalinie. "A diet high in fat and fructose in rats: impact on osseointegration, bone structure and function." Thesis, The University of Sydney, 2019. https://hdl.handle.net/2123/21294.

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Diets high in fat and sugar are associated with metabolic dysfunction including reduced bone quality. This thesis considers whether diet-induced metabolic changes adversely affect bone metabolism including implant osseointegration in female rats. Sprague Dawley rats were divided into three groups of n=10, control group (normal chow), 2 intervention groups on a high fat (60%) high fructose (20%) diet, and a sham surgery group (SS, n=4). Implants were placed in the proximal tibia at week 1 (control /SS groups), 6 weeks after (HFHF group) or 4 weeks before (dHFHF group) commencing the diet, and

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42

Bashoor, Zadeh Mahdieh. "Geometric characterization and simulation of cell-mediated resorption for porous bone substitutes using micro computed tomography and advanced fuzzy method." Thèse, Université de Sherbrooke, 2011. http://savoirs.usherbrooke.ca/handle/11143/1950.

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The objective of this thesis is to provide an improved characterization of porous scaffolds. A more focused objective is to provide a computational model simulating the cell mediated resorption process of resorbable bone substitutes. The thesis is structured in three scientific manuscripts. The first manuscript used fuzzy-based image treatment methods to analyse images generated by micro-computed tomography. From the literature, it is known that the fuzzy-based method helps to improve the accuracy of the characterization, in particular for scaffolds featuring a relatively small pore size. In a

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Yin, Xianzhen. "Structure Pharmaceutics Based on Synchrotron Radiation X-Ray Micro- Computed Tomography: From Characterization to Evaluation and Innovation of Pharmaceutical Structures." Thesis, University of Bradford, 2016. http://hdl.handle.net/10454/17378.

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Drug delivery systems (DDS) are essentially pharmaceutical products for human therapy, typically involving a mixture of active ingredients and excipients. Based upon quantitative characterization of structure, the thesis introduces the concept of classifying the architecture of DDS into four levels by their spatial scale and the life time period. The primary level is recognised as the static structure of the whole dosage form with a size from μm to cm with the final structure generated by formulation design. The secondary level categorises the structures of particles or sub-units to for

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Bianculli, Antonella. "Analysis of the scale effect in different computed tomography systems on the evaluation of bone tissue parameters." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/11207/.

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Tra le patologie ossee attualmente riconosciute, l’osteoporosi ricopre il ruolo di protagonista data le sua diffusione globale e la multifattorialità delle cause che ne provocano la comparsa. Essa è caratterizzata da una diminuzione quantitativa della massa ossea e da alterazioni qualitative della micro-architettura del tessuto osseo con conseguente aumento della fragilità di quest’ultimo e relativo rischio di frattura. In campo medico-scientifico l’imaging con raggi X, in particolare quello tomografico, da decenni offre un ottimo supporto per la caratterizzazione ossea; nello specifico la mic

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Spaw, Alexandra J. "Fetal Developmental Anatomy of the Human Cardiovascular and Central Nervous Systems Using Lugol’s Iodine Staining and Micro-Computed Tomography." Ohio University Honors Tutorial College / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ouhonors1398950897.

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Jensen, Lauren Elizabeth. "Mechanical preparation of oval-shaped root canals in mandibular premolars with the TRUShape 3D Conforming File: a micro-computed tomography study." Thesis, University of Iowa, 2017. https://ir.uiowa.edu/etd/5523.

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The TRUShape 3D Conforming File (TRUShape), a novel, S-shaped nickel-titanium (NiTi) rotary file, was developed to facilitate cleaning and shaping of irregular-shaped root canals. The purpose of this study was to evaluate the shaping ability of TRUShape compared to Vortex Blue (VB) when used in non-round, oval-shaped root canals by micro-computed tomography (MCT). Thirty single-rooted human mandibular premolar teeth with radiographically similar root canal size and curvature were randomly allocated to two groups (N=15), and mechanically prepared with TRUShape or VB. Each tooth was submitted to

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McMurray, Alexis Kelly. "Micro-CT/PET Assessment of Lung Metastasis in a Mouse Model of Osteosarcoma." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1364308724.

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Baumann, Michael. "Performance of a Micro-CT System : Characterisation of Hamamatsu X-ray source L10951-04 and flat panel C7942CA-22." Thesis, KTH, Skolan för teknik och hälsa (STH), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-155454.

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This master thesis evaluated the performance of a micro-CT system consisting of Hamamatsu microfocus X-ray source L10951-04 and CMOS flat panel C7942CA-22. The X-ray source and flat panel have been characterised in terms of dark current, image noise and beam profile. Additionally, the micro-CT system’s spatial resolution, detector lag and detector X-ray response have been measured. Guidance for full image correction and methods for characterisation and performance test of the X-ray source and detector is presented. A spatial resolution of 7 lp/mm at 10 % MTF was measured. A detector lag of 0.3

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Lai, Wendy Wing Man. "The quality of root canal filling in mandibular molars utilizing warm vertical and single cone technique : a three-dimensional micro-computed tomography." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/58669.

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The goal of the root canal filling procedure is the total 3-dimensional filling of root canals and accessory canals. With the development of innovative sealers and gutta percha in matching taper and diameter as rotary instruments, the single cone technique is gaining popularity. Objective: To compare the percentage of voids and gaps in the coronal, middle and apical third of mandibular molar root canals obturated with different sealers and techniques using micro-computed tomography. Hypothesis: No differences in the percentage of voids and gaps are found between: 1) the obturation groups; 2) t

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Cumpston, Devan N. "New Approaches to Studying Coronary Collateral Growth in a Mouse Model." NEOMED Integrated Pharmaceutical Medicine / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ne2mh1558708401226297.

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