Dissertations / Theses on the topic 'Micro-Computed Tomography'
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Nogueira, Rocha Clementino Luedemann Tatiana. "Micro-computed tomography in caries research." Diss., lmu, 2007. http://nbn-resolving.de/urn:nbn:de:bvb:19-70621.
Full textChen, W. (Wu). "A novel detector micro-module for computed tomography." Doctoral thesis, University of Oulu, 2004. http://urn.fi/urn:isbn:9514274474.
Full textGhous, 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.
Full textRytky, 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.
Full textAmurao, 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.
Full textRathore, 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.
Full textIl micro-srampaggio a iniezione è una tecnica di produzione ben consolidata per la replica in massa di micro parti. Tuttavia, lo sviluppo di un nuovo prodotto richiede un'ottimizzazione di processo conforme ai parametri di qualità desiderati. Dal punto di vista della qualità, sono richieste nuove tecnologie per la valutazione della qualità di micro prodotti e parti. La tomografia computerizzata a raggi X (CT) è una tecnologia emergente per il controllo della qualità nel settore industriale. L'attuale progetto si concentra sull'ottimizzazione della qualità di parti micro-stampate a micro iniezione, utilizzando la CT a raggi X. I parametri di lavorazione giocano un ruolo significativo nella qualità del prodotto finale; i parametri più importanti sono: temperatura del fuso, temperatura dello stampo, tempo di raffreddamento, pressione di compattazione, ecc. L'influenza dei parametri di processo sulla qualità del pezzo viene analizzata tramite la progettazione dell'approccio sperimentale. La tomografia a raggi X è uno strumento estremamente potente che può essere utilizzato per diverse valutazioni e analisi, ad es. metrologia dimensionale, porosità interna, orientamento delle fibre, ecc. Nell'ambito di questo progetto, sono stati condotti tre diversi studi in base agli elementi di qualità più rilevanti. Il primo studio si è concentrato sulla microfluidica dove è desiderato un controllo qualitativo dimensionale olistico. La tomografia a raggi X è stata utilizzata per la misurazione complessiva del pezzo, in particolare per le dimensioni e le deformazioni; mentre la profilometria ottica tridimensionale è stata utilizzata per le misurazioni dei micro canali. La fusione dei dati, ottenuti tramite l’uso della CT è stata utilizzata per le misurazioni olistiche del pezzo. Inoltre, l'effetto dell'allineamento del fascio di elettroni è stato studiato tramite le misurazioni di parti micro stampate utilizzando la tecnologia CT . I polimeri rinforzati con fibre sono comunemente usati nelle applicazioni di micro iniezione in cui sono desiderabili proprietà meccaniche superiori, ad es. nei connettori elettronici. Tuttavia, l'uso di polimeri rinforzati con fibre influisce sulla precisione desiderata, che è attribuita principalmente all'orientamento delle fibre nel prodotto finale. La natura non distruttiva della tecnologia CT a raggi X consente di studiare l'orientamento delle fibre e la sua influenza sulla precisione dimensionale delle parti. È stata condotta un'indagine sperimentale, focalizzando quest’ultima sull'influenza dei parametri di processo (temperatura del fuso, temperatura dello stampo, tempo di raffreddamento e pressione di riempimento) sulle caratteristiche delle fibre (orientamento, contenuto di volume della fibra ecc.). È stato inoltre eseguito uno studio che include l'analisi e la simulazione numerica delle acquisizioni per validare la caratterizzazione, eseguita con tecnologia CT, di compositi rinforzati con fibre. L'ultima parte si focalizza su una specifica applicazione del micro-stampaggio a iniezione dove i difetti interni (i vuoti) alterano la qualità in modo avverso. Una serie di indagini sperimentali sono state eseguite variando i parametri critici del processo. La tomografia a raggi X è stata utilizzata per la caratterizzazione delle parti e la valutazione della qualità considerando i diversi criteri di qualità, ad es. volume totale dei difetti, volume della parte (restringimento) ecc. Il set ottimale dei parametri di processo è stato identificato tramite analisi statistica.
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/.
Full textKarhula, S. (Sakari). "Quantification of osteochondral tissue modifications during osteoarthritis using micro-computed tomography." Doctoral thesis, Oulun yliopisto, 2018. http://urn.fi/urn:isbn:9789526220963.
Full textTiivistelmä Nivelrikko on heterogeeninen niveltauti, joka huonontaa yksilön elämän laatua aiheuttaen kipua ja liikuntakyvyttömyyttä. Nivelrikko aiheuttaa nivelkudosten rappeumaa vaikuttaen mm. ruston ja rustonalaisen luun rakenteeseen ja koostumukseen. Nivelrikon kudosmuutosten kuvantamisen kehittäminen ja määrällinen tutkiminen taudin alkuvaiheissa tukisivat nykyisten nivelrikon hoitomenetelmien kehittämistä. Kliinisessä käytössä ja perustutkimuksessa, tietokonetomografia (TT) mahdollistaa luukuvantamisen ja varjoaineita käytettäessä myös rustokuvantamisen. Tämän väitöskirjan tavoitteena on esitellä ja validoida uusia mikrotietokonetomografia-menetelmiä (μTT) nivelrikon rusto- ja luumuutosten määrälliseen tutkimukseen. Varjoaineavusteisia μTT in vitro menetelmiä ruston kollageenin (fosfovolframihappoa (PTA) ja fosfomolybdeenihappoa (PMA)) ja GAG (CA4+) jakauman määrälliseen tutkimukseen validoitiin useilla eri ruston biokemiallista koostumusta mittaavilla vertailumenetelmillä. Rustonalaisen luun kuvantamista kehitettiin soveltamalla harmaasävyjen tekstuurianalyysiä, jolla pyrittiin tunnistamaan kuva-alkiota pienempiä luurakenteita. Rustonalaisen luun μTT-kuvien analyysien tulokset validoitiin synkrotronisäteilyyn perustuvan μTT:n avulla. Lisäksi tekstuurianalyysin soveltuvuutta testattiin kliinisen resoluution kartiokeilan TT-kuville. Kuvista analysoituja tekstuuriparametrejä verrattiin μTT:lla mitattuun todelliseen rustonalaisen luun rakenteeseen. Väitöskirjan tulokset osoittavat, että PTA on spesifimpi kollageenille testatuista varjoaineista ja sen jakauma on verrannollinen kollageenijakaumaan jopa rappeutuneessa nivelrustossa. GAG-spesifisen varjoaineen CA4+:n todettiin kerääntyvän myös kondroneihin, mikä viittaa siihen, että kyseinen varjoaine soveltuisi potentiaalisesti rustosolujen korkean resoluution μTT-tutkimuksiin. Rustonalaisen luun μTT-kuvista analysoitujen tekstuuriparametrien havaittiin olevan verrannollisia osteosyyttien tilavuusfraktion kanssa. Väitöskirjassa esitettyjen tulosten perusteella μTT-kuvantaminen tarjoaa kvantitatiivisen menetelmän nivelruston kollageenijakauman ja rustosolujen sekä rustonalaisen luun osteosyyttien tutkimuksiin. Väitöskirjassa esitetyt menetelmät laajentavat jo olemassa olevaa tutkimusmenetelmien kirjoa nivelrikon aiheuttamien nivelrusto- ja luumuutosten tutkimuksessa. Lisäksi kehitetyt kuva-analyysimenetelmät voivat tarjota tarkempaa tietoa kliinisestä TT:sta
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.
Full textHagenmüller, 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.
Full textNiehaus, 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/.
Full textAlmeida, 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/.
Full textMairhofer, 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/.
Full textChopra, 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.
Full textTownsend, 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.
Full textTaylor, 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.
Full textKiyan, 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.
Full textFritz, 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.
Full textCataloged from PDF version of thesis.
Includes bibliographical references (pages 173-180).
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 prepreg aerospace-grade carbon fiber reinforced plastic (CFRP) laminated composites. The interlaminar thickness tool locates the interlaminar region and calculates its thickness at each voxel, and the porosity tool quantifies the void volume fraction and localizes each void to the interlaminar or intralaminar regions. Both of these tools were validated on exemplary datasets, and are shown to outperform manual methods. The interlaminar thickness measurements are accurate within 1.5 Jim and well within the standard error of the manual measurement performed via the currently accepted (destructive) method: Scanning Electron Microscopy (SEM). The tool revealed several previously unidentified features of the interlaminar region, including significant fiber misalignment at ply interfaces, and resin-rich regions that extend in the direction of ply microfibers, termed Tow-Aligned Resin Pockets (TARPs) herein. The porosity tool reveals macrovoids (volumes greater than 100 lim3) and microvoids (volumes less than 100 [mu]m 3) and localizes each void to the interlaminar or intralaminar regions. Macrovoids are studied in extant void quantification literature using optical or SEM inspection of cross-sections, but the small microvoids have been overlooked by these analyses and are found to be pervasive in the interlaminar and intralaminar regions. The tools were used to assess two aerospace unidirectional CFRP material systems: autoclave-cured AS4/8552 and out-of-autoclave (OoA) IM7/M56. Laminates of each material were manufactured with and without vertically aligned carbon nanotubes (CNTs) reinforcing the interlaminar region; this hierarchical nanoengineered architecture, termed nanostitching, is of interest in other work to improve strength and toughness of laminates. The analysis shows that the baseline AS4/8552 and IM7/M56 interlaminar thicknesses are 8.6 jrm and 14 jrm thick, respectively, and the nanostitched versions are 2.2 urm and 8.0 jim thicker than the baseline, respectively. TARPs are common to both materials, and are found to become 38 % larger with the addition of CNTs. Void content in the baseline and nanostitched materials was very low, -0.002vol% for the AS4/8552 and -0.001vol% for the IM7/M56. It was found that small microvoids (with diameters on the order of microns) are persistent in both materials, numbering -300 per mm3 with an average volume of 25 [mu]m3, and are generally evenly distributed, although some samples exhibit concentrations of small intralaminar microvoids in the certain plies. Future work will investigate possible connections of the newly-identified features (TARPs and microvoids) to mechanical properties, particularly as they may be damage precursors. Additional materials should be evaluated to determine if these newly-identified features persist in other aerospace-grade composites. In addition to these tools, this work provides a procedure for developing additional [mu]CT analysis tools, such as tools to automate damage identification and quantification.
by Nathan K. Fritz.
S.M.
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.
Full textMelean, 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.
Full textWils, 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.
Full textStephenson, 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/.
Full textKizhakke, 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.
Full textCostin, 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.
Full textIn a large international cooperation, the Saphir project aims at producing in a safe, integrated and controlled way, multifunctional nanostructured products. Within this framework, our contribution is the development of a method for three dimensional inspection and characterization of samples and parts produced by the partners. As a starting point, the X-ray computed tomography (CT) was chosen as the most appropriate non-destructive technique. But because the samples are very complex, with features over more orders of magnitude, the available commercial devices could not solve all the requirements and an adapted method for the image reconstruction needed to be developed. This thesis puts a theoretical and an experimental basis for an original method that we abbreviated ASDIR (Approximate Single Detail Image Reconstruction), capable of producing multiresolution images. In a zoom in CT setup, two sets of projections are acquired and combined. The reconstruction is based on the standard filtered backprojection (FBP) algorithm, but we extended it by implementing an acceleration technique that uses a wavelet processing of the data. Two preliminary variants are also presented, which turned out to produce unsatisfactory results, but they were the basis for the final version. We validated our approach on both simulated and experimental data. We generated numerical data with phantoms that we designed specially to assess different features of the method and of the samples. The experimental data was acquired with two different devices, a micro-tomograph and a nano-tomograph, with samples of different sizes. The images that we produced were subject to a basic analysis and we are confident that more information can be extracted from a detailed study
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.
Full textApplied Science, Faculty of
Engineering, School of (Okanagan)
Graduate
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.
Full textHuang, 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.
Full textGuelpa, 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.
Full textENGLISH 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 method is still lacking, furthermore, no dedicated maize milling quality method exists. Using an industrial guideline (chop percentage), a sample set of different maize hybrids was ranked based on milling performance. Unsupervised inspection (using principal component analysis (PCA) and Spearman’s rank correlation coefficients) identified seven conventional methods (hectoliter mass (HLM), hundred kernel mass (HKM), protein content, particle size index (PSI c/f), percentage vitreous endosperm (%VE) as determined using near infrared (NIR) hyperspectral imaging (HSI) and NIR absorbance at 2230 nm (NIR @ 2230 nm)) as being important descriptors of maize milling quality. Additionally, Rapid Visco Analyser (RVA) viscograms were used for building prediction models, using locally weighted partial least squares (LW-PLS). Hardness properties were predicted in the same order or better than the laboratory error of the reference method, irrespective of RVA profile being used. Classification of hard and soft maize hybrids was achieved, based on density measurements as determined using an X-ray micro-computed tomography (µCT) density calibration constructed from polymers with known densities. Receiver operating classification (ROC) curve threshold values of 1.48 g.cm-3 , 1.67 g.cm-3 and 1.30 g.cm-3 were determined for the entire kernel (EKD), vitreous (VED) and floury endosperm densities (FED), respectively at a maximum of 100% sensitivity and specificity. Classification based on milling quality of maize hybrids, using X-ray µCT derived density and volume measurements obtained from low resolution (80 µm) µCT scans, were achieved with good classification accuracies. For EKD and vitreous-to-floury endosperm ratio (V:F) measurements, 93% and 92% accurate classifications were respectively obtained, using ROC curve. Furthermore, it was established that milling quality could not be described without the inclusion of density measurements (using PCA and Spearman’s rank correlation coefficients). X-ray µCT derived density measurements (EKD) were used as reference values to build NIR spectroscopy prediction models. NIR spectra were acquired using a miniature NIR spectrophotometer, i.e. a microNIR with a wavelength range of 908 – 1680 nm. Prediction statistics for EKD for the larger sample set (where each kernel was scanned both germ-up and germ-down) was: R2 V = 0.60, RMSEP = 0.03 g.cm-3 , RPD = 1.67 and for the smaller sample set (where each kernel was scanned only germ-down): R2 V = 0.32, RMSEP = 0.03 g.cm-3 , RPD = 1.67. The results from the larger sample set indicated that reasonable predictions can be made at the fast NIR scan rate that would be suitable for breeders as a rough screening method.
AFRIKAANSE OPSOMMING: Mieliepitte bestaan uit twee tipes endosperm, ‘n harder glasagtige endosperm en ‘n sagter melerige endosperm, en die verhouding waarin die twee tipes endosperm aangetref word, bepaal hoofsaaklik die hardheid van die pit. Mielies (Zea mays L.) is ‘n stapelvoedsel in baie lande, insluitende Suid-Afrika, en word industrieël geprosesseer na mieliemeel deur van droë-vermaling gebruik te maak. Vir optimale produksie en beter kwaliteit produkte, word harde pitte deur die meule verkies. Ongeag die beskikbaarheid van verskeie mielie hardheid metodes, ontbreek ‘n gestandardiseerde metode nog, en verder bestaan ‘n metode om mielies se maalprestasie te bepaal ook nie. ‘n Monsterstel, bestaande uit verskillende mieliebasters, is op grond van maalprestasie ingedeel deur van ‘n industriële riglyn (chop persentasie) gebruik te maak. Inspeksie sonder toesig (deur gebruik te maak van hoofkomponentanalise (HKA) en Spearman’s rangkorrelasiekoëffisiënte) het sewe onkonvensionele metodes (hektoliter massa, honderd pit massa, protein inhoud, partikel grootte indeks, persentasie glasagtige endosperm soos bepaal deur gebruik te maak van naby-infrarooi (NIR) hiperspektrale beelding en NIR absorbansie by 2230 nm) identifiseer as belangrike beskrywers van maalprestasie. Daarbenewens, is Rapid Visco Analyser (RVA) viskogramme gebruik om voorspellingsmodelle te bou deur gebruik te maak van plaaslik geweegte gedeeltelike kleinstekwadrate (PG-GKK) wat hardheidseienskappe kon voorspel met laer, of in dieselfde orde, laboratorium foute van die verwysingsmetodes, ongeag die gebruik van verskillende RVA profiele. Klassifikasie tussen harde en sagte mieliebasters was moontlik, gebasseer op digtheidsmetings soos bepaal met ‘n X-staal mikro-berekende tomografie (µBT) digtheids kalibrasie gebou vanaf polimere met bekende digthede. Ontvanger bedryf kenmerkende (OBK) kurwe drempelwaardes van 1.48 g.cm-3 , 1.67 g.cm-3 en 1.30 g.cm-3 is bepaal vir hele pit, glasagtige en melerige endosperm digthede, onderskeidelik, teen ‘n maksimum van 100% sensitiwiteit en spesifisiteit. Klassifikasie van die mieliebasters, gebasseer op maalprestasie en deur gebruik te maak van X-straal µBT afgeleide digtheid en volume metings soos verkry teen lae resolusie (80 µm) skanderings, was moontlik met goeie klassifikasie akkuraatheid. Vir heel pit digtheid en glasagtigtot-melerige endosperm verhouding metings is 93% en 92% akkurate klassifikasies verkry wanneer OBK kurwes gebruik is. Verder is dit vasgestel (deur gebruik te maak van HKA en Spearman’s rangkorrelasiekoëffisiënte) dat digtheidsmetings ingesluit moet word vir ‘n volledige beskrywing van maalprestasie. X-straal µBT afgeleide digtheid metings is gebruik as verwysings waardes om NIR spektroskopie voorspellings modelle te bou. NIR spektra is verkry deur van ‘n miniatuur NIR spektrofotometer, naamlik ‘n microNIR, bebruik te maak vanaf 908 – 1680 nm. Voorspellings statestiek vir die groter monsterstel (waar elke pit beide kiem-bo en kiem-onder geskandeer is) was vir HPD: R2 V = 0.60, RMSEP = 0.03 g.cm-3 , RPD = 1.67 en vir die kleiner monsterstel (waar elke pit was slegs kiem-onder geskandeer is) vir HPD: R2 V = 0.32, RMSEP = 0.03 g.cm-3 , RPD = 1.67. Die resultate van die groter monsterstel het aangedui dat redelike voorspellings moontlik is, teen die vinnige NIR skaderings tempo wat as rowwe vertoningsmetode geskik sal wees vir telers.
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.
Full textSchroeder, 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.
Full textDentistry, Faculty of
Graduate
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/.
Full textCouves, 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/.
Full textLu, 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.
Full textStjärnesund, 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.
Full textJonsson, 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.
Full textSen, Sharma Kriti. "Compressed Sensing based Micro-CT Methods and Applications." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/52866.
Full textPh. D.
Opie, Alexander M. T. "Contributions to spectral CT." Thesis, University of Canterbury. Electrical and Computer Engineering, 2013. http://hdl.handle.net/10092/8532.
Full text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.
Full textInsufficient 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 tomography (µCT), and revealed a distinct depth-dependent structure of the canal in the rabbit vertebral endplate characterized by length, diameter and orientation of the individual canals.
博士(工学)
Doctor of Philosophy in Engineering
同志社大学
Doshisha University
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.
Full textFluid displacement in porous media during slow drying in controlled atmosphere is explored on the pore-level, by using the technique of X-ray micro computed tomography. To this end, a regular, porous sample body of micro-metric dimensions, which exhibits a predefined pore structure and wettabilty, is conceived and produced on basis of a set of preliminary experiments. After infusion with distilled water, the drying behavior of the sample in a controlled atmosphere is investigated. Subsequently a set of tomographic experiments is defined and conducted, and the resulting data is evaluated. One main focus point is set on the optimization of the whole process chain of acquiring high-resolution tomographic data. This includes the sample preparation, definition of scanning parameters, reconstruction approaches, as well as image processing and segmentation. A systematic approach in all of those domains provides insight into the existing shortcomings and the existing, as well as the yet untapped potential of X-ray micro computed tomography as a tool to investigate drying processes on the pore-level. The second main focus point is set onto the segmentation of the data and the information content of the segmented data regarding pore-level fluid displacement events during drying. Pore network models are extracted and relayed in combination with the evaluated data to related research projects on simulation and visualization for further usage and validation purposes.
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.
Full textKing, 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.
Full textBashoor, 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.
Full textYin, 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.
Full textChinese Academy of Sciences
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/.
Full textSpaw, 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.
Full textJensen, 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.
Full textMcMurray, 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.
Full textBaumann, 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.
Full textLai, 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.
Full textDentistry, Faculty of
Graduate
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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