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Rozprawy doktorskie na temat „FUS imaging”

Autor: Grafiati

Data publikacji: 28 września 2024

Data aktualizacji: 31 lipca 2025

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1

Cazzanelli, Silvia. "Functional ultrasound (fUS) imaging of brain functional connectivity alterations in a mouse model of neuropathic pain : impact of nociceptive symptoms and associated comorbidities." Electronic Thesis or Diss., Université Paris sciences et lettres, 2024. http://www.theses.fr/2024UPSLS010.

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La douleur neuropathique est une sensation de douleur anormale qui persiste au-delà du cours temporel de la guérison naturelle. Elle interfère avec la qualité de vie du patient et est associée à plusieurs comorbidités telles que l'anxiété et la dépression. Des études antérieures ont suggéré que la douleur chronique pourrait résulter d’une plasticité neuronale anormale et inadaptée dans les structures connues pour être impliquées dans la perception de la douleur (Bliss et al. 2016). Cela signifie qu'une lésion nerveuse déclencherait une potentialisation à long terme de la transmission synaptiqu

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Sieu, Lim-Anna. "Exploration des réseaux épileptiques par imagerie ultrasonore et électrophysiologie." Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066384/document.

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Les épilepsies sont des hyperactivités neuronales pathologiques largement distribuées au sein du système nerveux. Aborder la question de l'organisation spatiotemporelle de ces crises est un premier pas crucial vers la dissection des mécanismes qui les sous-tendent. Alors qu'il existe de nombreux modèles d'hyperactivité épileptiforme, il est plus difficile d'étudier les crises spontanées, qui sont altérées par la sédation. Dans cette thèse, j'ai développé une approche combinant l'électroencéphalogramme (EEG) avec l'imagerie fonctionnelle ultrasonore (fUS), sur le rat mobile. Ainsi, sur un modèl

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3

Tiran, Elodie. "Imagerie cérébrale et étude de la connectivité fonctionnelle par échographie Doppler ultrarapide chez le petit animal éveillé et en mouvement." Thesis, Sorbonne Paris Cité, 2017. http://www.theses.fr/2017USPCC174/document.

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Mes travaux de thèse portent sur l’application de l’imagerie fUS (functional ultrasound imaging) à l’imagerie cérébrale préclinique chez le petit animal. Le but était de transformer cette technique d’imagerie cérébrale récente en un véritable outil de quantification de l’état cérébral. Les objectifs principaux ont été de démontrer la faisabilité de l’imagerie fUS chez le petit animal non anesthésié ainsi que de passer du modèle rat au modèle souris - modèle de choix en imagerie préclinique en neurosciences - de surcroît de façon non invasive. J’ai tout d’abord mis au point une nouvelle séquenc

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Lin, Qiaojin. "Axonal translation and links to neuropathies." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/273662.

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Neurons connect to their remote targets via axons, which usually survive for the lifetime of an organism. Spatiotemporal regulation of the axonal proteome by local protein synthesis (LPS) plays a critical role in neuronal wiring and axon survival, raising the intriguing possibility that some neurological disorders involve LPS dysfunction. To visualise LPS in situ, I optimised multiple imaging techniques to investigate Netrin-1-induced translation in cultured retinal axons. Total axonal protein synthesis measured by metabolic and puromycin labelling indicates axons experience stage-dependent al

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5

Dervishi, Elvis. "Traitement des tumeurs cérébrales par ultrasons focalisés de haute intensité - sur un modèle tumoral greffé chez le rat." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA11T046.

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La thérapie par faisceaux ultrasonores focalisés de forte intensité (HIFU / High Intensity Focused Ultrasound) est une nouvelle technique d’ablation tissulaire, fondée sur la focalisation de faisceaux ultrasonores de forte intensité pour réaliser une élévation de température capable de créer une nécrose thermique. Le cerveau a été jusqu’à présent peu accessible aux ultrasons car il est protégé par la boîte crânienne. Mais de nouvelles techniques de focalisation par correction des aberrations des faisceaux ultrasonores laissent espérer des applications prochaines en intracrânien, où l’HIFU pour

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6

Rykala, Adam. "Star formation studies using the Herschel-SPIRE Imaging FTS." Thesis, Cardiff University, 2011. http://orca.cf.ac.uk/19702/.

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The study of low mass star formation in our local Galaxy is particularly suited to HERSCHEL. The SPIRE spectrometer and photometer aboard the spacecraft operate in the ~ 200 - 600�m range and are well suited to probe the cold, dusty environments in molecular clouds where prestellar cores reside. The SPIRE FTS spectrometer is an interferometer, and this instrument design has strengths and weaknesses which are im- portant to understand when using data from the instrument. Herschel is set to continue groundbreaking work in the infrared, building upon earlier work from ISO, IRAS, and SPITZER, prob

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LAVIANO, FRANCESCO. "Magneto-optics: Imaging and Quantitative Analysis." Doctoral thesis, Politecnico di Torino, 2005. http://hdl.handle.net/11583/2565567.

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The work presented in this thesis deals with the magneto-optical imaging (MOI) technique, which was developed during the PhD course of the candidate, with an equipment at the international state-of-the-art. The quantitative theoretical formalism was critically reproduced and verified, along with a careful calibration procedure. A novel, big improvement was brought for all the MOI experiments, aimed at the quantitative reconstruction of the current density, by an iterative procedure (Supercond. Sci. Technol. 16, 71 (2003)). The new MOI method was then applied to study a wide class of supercondu

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8

ALCHERA, NICOLA. "Data harmonization in PET imaging." Doctoral thesis, Università degli studi di Genova, 2021. http://hdl.handle.net/11567/1049735.

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Medical imaging physics has advanced a lot in recent years, providing clinicians and researchers with increasingly detailed images that are well suited to be analyzed with a quantitative approach typical of hard sciences, based on measurements and analysis of clinical interest quantities extracted from images themselves. Such an approach is placed in the context of quantitative imaging. The possibility of sharing data quickly, the development of machine learning and data mining techniques, the increasing availability of computational power and digital data storage which characterize this age

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9

Lautenschlager, Michael Allen. "Imagining the Worst: Ladislav Fuks' Contributions to Holocaust Fiction." Thesis, Virginia Tech, 2011. http://hdl.handle.net/10919/32530.

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Ladislav Fuks' works are under-recognized in English-speaking academic discourse. He is a valuable contributor not only to the Holocaust Literature genre, but also to film and literature in general. His two English-translated works, Mr. Theodore Mundstock and The Cremator, as well as the film adaptation of The Cremator, examine the role imagination can play in art that addresses atrocity, allowing for a heightened subjective impact on the audience. I critically and comparatively examine Fuks' work to establish his value to literature and Holocaust art. In the first chapter, I frame my argu

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10

JAUBERTEAU, RAPHAËL. "Extreme events in quadratic media: application to nonlinear imaging." Doctoral thesis, Università degli studi di Brescia, 2021. http://hdl.handle.net/11379/554955.

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Vancin, Paulo Henrique. "Fus?o de imagens e sensores inerciais para a estima??o e controle de ve?culos aut?nomos." Pontif?cia Universidade Cat?lica do Rio Grande do Sul, 2016. http://tede2.pucrs.br/tede2/handle/tede/7229.

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Submitted by Caroline Xavier (caroline.xavier@pucrs.br) on 2017-04-10T15:08:08Z No. of bitstreams: 1 DIS_PAULO_HENRIQUE_VANCIN_COMPLETO.pdf: 3234416 bytes, checksum: 53fbe981d0db83ced33b8b3f4247c2f8 (MD5)<br>Made available in DSpace on 2017-04-10T15:08:08Z (GMT). No. of bitstreams: 1 DIS_PAULO_HENRIQUE_VANCIN_COMPLETO.pdf: 3234416 bytes, checksum: 53fbe981d0db83ced33b8b3f4247c2f8 (MD5) Previous issue date: 2016-12-27<br>The present dissertation proposes a sensoring technique of autonomous vehicles based on the fusion of inertial sensors and data collected from a camera. The autonomous vehicl

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12

DAGLIO, STEFANO CARLO. "GFP photo switchable mutants for intensity modulation." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2012. http://hdl.handle.net/10281/31053.

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Photo-switchable chromophores are fluorescent inorganic dyes or proteins characterized by the tunability of their emission depending on the properties of the exciting radiation such as wavelength or intensity. The opportunities o ered by this kind of markers in the field of fluorescence microscopy, range from super-resolution imaging to molecular intracellular sensing of pH, calcium or second messengers. In this thesis I have studied the properties of two photo switchable GFP Mut2 mutants (E222Q and Mut2GQ) and their possible applications to biological fluorescence pump and probe imaging.

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13

Recchia, Francesco. "In-beam test and imaging capabilities of the AGATA prototype detector." Doctoral thesis, Università degli studi di Padova, 2008. http://hdl.handle.net/11577/3425947.

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High-resolution gamma-ray spectroscopy is one of the most powerful and sensitive tools to investigate Nuclear Structure. Significant progress in this field was achieved through the use of arrays of Compton-suppressed high purity germanium detectors, leading for instance to the discovery of phenomena such as nuclear superdeformation. However, it is apparent that the present generation devices are not suited to the expected experimental conditions at the planned and under construction radioactive ion beam facilities. Devices with higher efficiency and sensitivity should be developed. The solutio

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14

Moffitt, Michael Adam. "Functional Imaging of the Mammalian Spinal Cord." Case Western Reserve University School of Graduate Studies / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=case1081363883.

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15

Babayan, Bénédicte. "Unraveling the neural circuitry of sequence-based navigation using a combined fos imaging and computational approach." Thesis, Paris 5, 2014. http://www.theses.fr/2014PA05T059/document.

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La navigation spatiale est une fonction complexe qui nécessite de combiner des informations sur l’environnement et notre mouvement propre pour construire une représentation du monde et trouver le chemin le plus direct vers notre but. Cette intégration multimodale suggère qu’un large réseau de structures corticales et sous-corticales interagit avec l’hippocampe, structure clé de la navigation. Je me suis concentrée chez la souris sur la navigation de type séquence (ou stratégie égocentrique séquentielle) qui repose sur l’organisation temporelle de mouvements associés à des points de choix spati

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16

ALBUQUERQUE, Hugo Rodrigues de. "Fusão de imagens no domínio da frequência baseada em foco." Universidade Federal de Pernambuco, 2013. https://repositorio.ufpe.br/handle/123456789/11847.

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Submitted by João Arthur Martins (joao.arthur@ufpe.br) on 2015-03-10T19:14:48Z No. of bitstreams: 2 DISSERTAÇÃO Hugo Albuquerque.pdf: 7422850 bytes, checksum: 3133c927702ab38bd7ee89b9c3f5cc73 (MD5) license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5)<br>Approved for entry into archive by Daniella Sodre (daniella.sodre@ufpe.br) on 2015-03-10T19:43:36Z (GMT) No. of bitstreams: 2 DISSERTAÇÃO Hugo Albuquerque.pdf: 7422850 bytes, checksum: 3133c927702ab38bd7ee89b9c3f5cc73 (MD5) license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5)<br>Made available in D

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17

Arosio, Daniele. "Imaging Chloride Homeostasis in Neurons." Doctoral thesis, Università degli studi di Trento, 2017. https://hdl.handle.net/11572/368512.

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Intracellular chloride and pH are fundamental regulators of neuronal excitability and they are often co-modulated during excitation-inhibition activity. The study of their homeostasis requires simultaneous measurements in vivo in multiple neurons. Combining random mutagenesis screening, protein engineering and two-photon-imaging this thesis work led to the discovery of new chloride-sensitive GFP mutants and to the establishment of ratiometric imaging procedures for the quantitative combined imaging of intraneuronal pH and chloride. These achievements have been demonstrated in vivo in the mouse

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Arosio, Daniele. "Imaging Chloride Homeostasis in Neurons." Doctoral thesis, University of Trento, 2017. http://eprints-phd.biblio.unitn.it/1937/2/DECLARATORIA_ENG_signed.pdf.

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Intracellular chloride and pH are fundamental regulators of neuronal excitability and they are often co-modulated during excitation-inhibition activity. The study of their homeostasis requires simultaneous measurements in vivo in multiple neurons. Combining random mutagenesis screening, protein engineering and two-photon-imaging this thesis work led to the discovery of new chloride-sensitive GFP mutants and to the establishment of ratiometric imaging procedures for the quantitative combined imaging of intraneuronal pH and chloride. These achievements have been demonstrated in vivo in the mouse

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19

Albertazzi, Lorenzo. "Dendrimers for drug delivery and molecular imaging." Doctoral thesis, Scuola Normale Superiore, 2011. http://hdl.handle.net/11384/85853.

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FESTA, GIULIA. "Neutron-based imaging applied to cultural heritage." Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2009. http://hdl.handle.net/2108/887.

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La scoperta di oggetti antichi solleva una serie di questioni quali la corretta determinazione del contesto storico-culturale, la provenienza ed il metodo di lavorazione, oltre alla scelta dei trattamenti e delle condizioni di restauro e conservazione. Vengono qui presentati risultati riguardo l’applicazione di tecnologie neutroniche nel campo dei beni culturali e promettenti prospettive future nel binomio scienza-tecnologia per lo studio di oggetti archeologici. Vengono discusse attività relative allo sviluppo di strumentazione ad hoc quali un sistema di posizionamento successivamente integr

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21

Grandi, Massimiliano <1970&gt. "Microwave Breast Cancer Imaging: Simulation, Experimental Data, Reconstruction and Classification." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amsdottorato.unibo.it/7276/1/GRANDI_MASSIMILIANO_TESI.pdf.

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This work concerns the microwave imaging (MWI) for breast cancer. The full process to develop an experimental phantom is detailed. The models used in the simulation stage are presented in an increasing complexity. Starting from a simplified homogeneous breast where only the tumor is placed in a background medium, moving to an intermediate complexity model where a rugged fibroglandular structure other than tumor has been placed and reaching a realistic breast model derived from the nuclear magnetic resonance phantoms. The reconstruction is performed in 2D using the linear TR-MUSIC algorithm te

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IMPALLARIA, Anna. "Radiographic imaging of chemical elements for Cultural Heritage." Doctoral thesis, Università degli studi di Ferrara, 2017. http://hdl.handle.net/11392/2487963.

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Radiographic techniques, usually, don’t give information about the chemical composition of a sample. However, thanks to the K-edge differential technique, it is possible to highlight the presence of target chemical elements with the radiography. This technique takes advantage on the K-edge discontinuity of the X-rays mass absorption coefficient. Considering a target element and acquiring two radiographies with monochromatic beams under and over the K-edge energy, the main difference between the two images is due to the presence of the element itself. To apply this peculiar radiographic techn

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23

Stabile, Tony Alfredo <1977&gt. "High frequency seismic and underwater acoustic wave propagation and imaging techniques." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2008. http://amsdottorato.unibo.it/1145/1/Tesi_Stabile_Tony_Alfredo.pdf.

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Stabile, Tony Alfredo <1977&gt. "High frequency seismic and underwater acoustic wave propagation and imaging techniques." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2008. http://amsdottorato.unibo.it/1145/.

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SAMANTARAY, NIGAM LAHARI. "Quantum enhanced imaging and sensing with correlated light." Doctoral thesis, Politecnico di Torino, 2017. http://hdl.handle.net/11583/2667303.

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Without light, there would be no sight. Light acts as a probe in various measurement techniques ranging from imaging to spectroscopy, from small scale cantilever displace- ment measurement in atomic force microscopy to large scale mirror motion in interfer- ometry, light detection and ranging (LIDAR) and many other fields. As the light probe intensity rises, it not only allows reducing the background noise effect, but it also aids precision to the measurement by reducing the photon noise (shot-noise) contribution. However, increasing intensity beyond certain threshold level is not always

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26

VITUCCI, GIUSEPPE. "Advances in instruments and methods for neutron transmission imaging." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2019. http://hdl.handle.net/10281/241081.

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Il lavoro presentato in questa tesi si concentra sullo sviluppo e sul miglioramento della strumentazione e dei metodi applicati all'imaging a trasmissione di neutroni. Le attività di ricerca sono state svolte presso il laboratorio di "Imaging and Materials Science and Engineering" (IMAT). Questa struttura fa parte della sorgente di neutroni ISIS presso il Rutherford Appleton Laboratory (UK). I neutroni qui sono prodotti dalla spallazione di un bersaglio di tungsteno colpito da protoni con energia di 800 MeV. I neutroni risultanti vengono moderati e convogliati attraverso le guide dei fasci ver

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27

Ripoli, Cristina. "Low and high field Magnetic Resonance Imaging and its application in food science and plants." Doctoral thesis, Universita degli studi di Salerno, 2018. http://elea.unisa.it:8080/xmlui/handle/10556/4385.

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2016 - 2017<br>Nuclear Magnetic Resonance (NMR) and Magnetic Resonance Imaging (MRI) are techniques that have seen a remarkable success and a fast growth over the past decades. Thanks to its non-invasivity and non-descrutivity, the MRI enhances its potential to perform inspections and studies of the internal structure of intact samples such as fruits and vegetables. without modifications caused by the measurements Due to the presence of a high water content in these products, MRI can be useful to obtain information about tissue properties and, thanks to the high sensitivity, can trace water

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CUCCIATI, GIACOMO. "Optimization and characterization of PET scanners for Medical Imaging." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2014. http://hdl.handle.net/10281/83322.

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Positron emission tomography is an imaging technique that appeared to be a valid instrument for cancers detection and neuro-imaging studies. Since first models built during 1960s, an incredible effort has been done by researchers to develop scanners more and more advanced with higher specificity and efficiency. Monte Carlo simulations have shown to be a very important tool during design phase of PET prototypes thanks to their ability to simulate systems with many coupled degrees of freedom, as it happens when particles interact with matter. This Thesis work has started in the frame the Crystal

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Tramelli, Anna <1979&gt. "Elastic Propagation in random media: applications to the imaging of volcano structures." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2008. http://amsdottorato.unibo.it/870/1/Tesi_Tramelli_Anna.pdf.

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High-frequency seismograms contain features that reflect the random inhomogeneities of the earth. In this work I use an imaging method to locate the high contrast small- scale heterogeneity respect to the background earth medium. This method was first introduced by Nishigami (1991) and than applied to different volcanic and tectonically active areas (Nishigami, 1997, Nishigami, 2000, Nishigami, 2006). The scattering imaging method is applied to two volcanic areas: Campi Flegrei and Mt. Vesuvius. Volcanic and seismological active areas are often characterized by complex velocity structure

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Tramelli, Anna <1979&gt. "Elastic Propagation in random media: applications to the imaging of volcano structures." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2008. http://amsdottorato.unibo.it/870/.

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High-frequency seismograms contain features that reflect the random inhomogeneities of the earth. In this work I use an imaging method to locate the high contrast small- scale heterogeneity respect to the background earth medium. This method was first introduced by Nishigami (1991) and than applied to different volcanic and tectonically active areas (Nishigami, 1997, Nishigami, 2000, Nishigami, 2006). The scattering imaging method is applied to two volcanic areas: Campi Flegrei and Mt. Vesuvius. Volcanic and seismological active areas are often characterized by complex velocity structure

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PEDRINI, JACOPO. "Advanced Strategies for Light Management in Photonics, Imaging, and Sensing." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2017. http://hdl.handle.net/10281/153245.

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Il mio lavoro di tesi è stato mirato allo sviluppo di materiali per manipolazione della luce. Il principale obiettivo è stato quello di fabbricare e caratterizzare cristalli fotonici basati su materiali innovativi ad alto indice di rifrazione. Terminato questo progetto, l’obiettivo del mio lavoro si è spostato verso lo sviluppo di materiali per applicazioni biologiche: imaging anti-Stokes e sensing del pH intracellulare. In dettaglio, ho lavorato sulla nanofabbricazione e la caratterizzazione di cristalli fotonici a base di dicalcogenuri di metalli di transizione (TMD). In questo progetto ho d

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MOHAMMADYARI, Parvin. "Advanced Human Hemodynamic Modelling and Valuation using MRI imaging." Doctoral thesis, Università degli studi di Ferrara, 2021. http://hdl.handle.net/11392/2487973.

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Proper functioning of brain critically depends on cerebral blood inflow and outflow. Moreover, the venous contribution in auto-regulation function and maintaining pressure and blood flow balance in body organs such as brain has been highlighted. Auto-regulating mechanism and cerebral circulation are influenced by many biophysical factors such as aging, posture and gravitational pressure change, and vessel stenosis. Therefore, it is important to gain a satisfactory understanding of physiological and biomechanical properties of the venous system and the interaction between intra- and extracrania

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Santos, Daniel Teixeira dos. "Compress?o de Imagens Usando a Fun??o de Peano e a Transformada Wavelet 1D." Universidade Federal do Rio Grande do Norte, 2012. http://repositorio.ufrn.br:8080/jspui/handle/123456789/12973.

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Made available in DSpace on 2014-12-17T14:08:51Z (GMT). No. of bitstreams: 1 DanielTS_DISSERT.pdf: 2906320 bytes, checksum: 0844f1ce3a3b057671d92efe62faa050 (MD5) Previous issue date: 2012-04-06<br>Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior<br>In this work, spoke about the importance of image compression for the industry, it is known that processing and image storage is always a challenge in petrobr?s to optimize the storage time and store a maximum number of images and data. We present an interactive system for processing and storing images in the wavelet domain and an inte

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Valente, M. A. "Fricke gel dosimetry for 3D imaging of absorbed dose in radiotherapy." Doctoral thesis, Università degli Studi di Milano, 2007. http://hdl.handle.net/2434/41638.

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The overall aim of this thesis was to develop improvements for 3D dosimetry system, based on Fricke solution, in order to achieve accurate 3D absorbed dose distributions by means of visible light transmittance analysis. Such a system would represent a useful tool for 3D treatment planning verification. In particular, the main objectives were: To make a Fricke gel dosimeter selecting proper gelling substance and optimizing gel quantity according to the dosimeter response. To develop a Fricke gel dosimeter preparation protocol in order to establish an optimal elaboration process. To evaluate

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FEDON, CHRISTIAN. "Simulations and experimental assessment of dosimetric evaluations for breast imaging studies with Synchrotron Radiation." Doctoral thesis, Università degli Studi di Trieste, 2016. http://hdl.handle.net/11368/2908074.

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Nel migliorare la diagnosi precoce del tumore al seno, a partire dal 2006, è attivo a Trieste uno studio clinico che utilizza la luce di sincrotrone come sorgente di raggi x per eseguire l’esame mammografico (Castelli and et al., 2011). Il sincrotrone Elettra (situato sull’altopiano carsico di Basovizza, Trieste) ospita infatti una facility per l’esecuzione dell’esame mammografico lungo la linea di luce SYRMEP (SYnchrotron Radiation for MEdical Physics). A partire dal 2013 è attivo il progetto SYRMA-CT (finanziato dall’Istituto Nazionale di Fisica Nucleare) che ha come principale obbiettivo qu

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Fontana, Cristiano Lino. "An Imaging Camera for Biomedical Application Based on Compton Scattering of Gamma Rays." Doctoral thesis, Università degli studi di Padova, 2013. http://hdl.handle.net/11577/3423412.

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In this thesis we present the R&D of a Compton Camera (CC) for small object imaging. The CC concept requires two detectors to obtain the incoming direction of the gamma ray. This approach, sometimes named ``Electronic Collimation,'' differs from the usual technique that employs collimators for physically selecting gamma-rays of a given direction. This solution offers the advantage of much greater sensitivity and hence smaller doses. We propose a novel design, which uses two similar Position Sensitive Photomultipliers (Hamamatsu 8500) coupled to different scintillators (one plastic and one

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Howard, Aimee Kay. "Characterization of sarcopenic skeletal muscle using MR imaging and spectroscopy." Tallahassee, Fla. : Florida State University, 2009. http://purl.fcla.edu/fsu/lib/digcoll/undergraduate/honors-theses/244574.

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Thesis (Honors paper)--Florida State University, 2009.<br>Advisor: Dr. Samuel Grant, Florida State University, College of Engineering, Dept. of Biomedical Engineering. Includes bibliographical references.

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DE, VITO GIUSEPPE. "Label-free polarisation-resolved optical imaging of biological samples." Doctoral thesis, Scuola Normale Superiore, 2016. http://hdl.handle.net/11384/78768.

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Myelin is a biological structure present in all the gnathostomata. It is a highly- ordered structure, in which many lipid-enriched and densely compacted phospho- lipid bilayers are rolled up in a cylindrical symmetry around a subgroup of axons. The myelin sheath increases the electrical transverse resistance and reduces the ca- pacitance making the saltatory conduction of action potentials possible and therefore leading to a critically improved performance in terms of nervous impulse conduc- tion speeds and travel lengths. Myelin pathologies are a large group of neurological diseases that oft

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Regazzoni, Veronica. "Development of a Gamma-Ray Detector based on Silicon Photomultipliers for Prompt Gamma Imaging and High-Energy Spectroscopy." Doctoral thesis, University of Trento, 2017. http://eprints-phd.biblio.unitn.it/2706/1/Disclaimer_Veronica_Regazzoni_.pdf.

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Proton therapy is a recent type of radiotherapy that uses high-energy proton beams, and more recently carbon ion beams, to benefit of their physical selectivity. The energy deposited by these particle beams is inversely proportional to their velocity. Therefore they release most of the energy at the end of their path into the tissue. The energy is deposited in a few millimeters, in a zone called the Bragg peak. Before and after the Bragg peak the energy deposition is minimal. The depth and the width of the Bragg peak depends on the beam energy and on the density of tissues located along the

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MARINI, MARIO. "Development and applications of super-resolution photo-thermal imaging." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2022. http://hdl.handle.net/10281/365167.

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L'imaging termico foto-attivato è una tecnica largamente impiegata per la caratterizzazione non invasiva di campioni sintetici e tessuti biologici. Tuttavia, la termografia nel lontano infrarosso risulta limitata da (i) risoluzione spaziale nell'intervallo ~0.1-1 mm, a causa della diffrazione della radiazione termica e agli effetti di diffusione del calore nel campione, e (ii) la difficoltà nel convertire il segnale di temperatura in mappe quantitative delle proprietà termiche (ad esempio, la conducibilità termica) dei campioni in esame. Il mio lavoro di dottorato è stato rivolto ad affrontare

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Brunner, Clément. "Functional ultrasound imaging (fUSi) to assess brain function in physiological and pathological conditions : application to stroke." Thesis, Sorbonne Paris Cité, 2016. http://www.theses.fr/2016USPCB123/document.

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Depuis le milieu du XXème siècle, les techniques d’imagerie fonctionnelles ont un rôle grandissant dans notre compréhension sur les fonctions du cerveau en conditions physiologique et pathologique. Bien que l’IRMf fasse partie des techniques les plus communément utilisées pour l’imagerie du cerveau complet lors d’études préclinique et clinique, cette modalité souffre de sa résolution spatiotemporelle et sa sensibilité pour enregistrer finement les fonctions et activités cérébrales. Récemment l’imagerie fonctionnelle par ultrason (ifUS) a subi des développements permettant d’être complémentaire

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Morgan, John <1981&gt. "Very Long Baseline Interferometry in Italy Wide-field VLBI imaging and astrometry and prospects for an Italian VLBI network including the Sardinia Radio Telescope." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2010. http://amsdottorato.unibo.it/2830/2/thesis.pdf.

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In this thesis the use of widefield imaging techniques and VLBI observations with a limited number of antennas are explored. I present techniques to efficiently and accurately image extremely large UV datasets. Very large VLBI datasets must be reduced into multiple, smaller datasets if today’s imaging algorithms are to be used to image them. I present a procedure for accurately shifting the phase centre of a visibility dataset. This procedure has been thoroughly tested and found to be almost two orders of magnitude more accurate than existing techniques. Errors have been found at the level

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Morgan, John <1981&gt. "Very Long Baseline Interferometry in Italy Wide-field VLBI imaging and astrometry and prospects for an Italian VLBI network including the Sardinia Radio Telescope." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2010. http://amsdottorato.unibo.it/2830/.

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In this thesis the use of widefield imaging techniques and VLBI observations with a limited number of antennas are explored. I present techniques to efficiently and accurately image extremely large UV datasets. Very large VLBI datasets must be reduced into multiple, smaller datasets if today’s imaging algorithms are to be used to image them. I present a procedure for accurately shifting the phase centre of a visibility dataset. This procedure has been thoroughly tested and found to be almost two orders of magnitude more accurate than existing techniques. Errors have been found at the level

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COLOMBO, ALESSANDRO. "HIGH PERFORMANCE COMPUTATIONAL INTELLIGENCE FOR COHERENT DIFFRACTION DATA ANALYSIS AND IMAGING." Doctoral thesis, Università degli Studi di Milano, 2018. http://hdl.handle.net/2434/607138.

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Coherent Diffraction Imaging (CDI) is a lens-less technique that allows imaging of matter at a spatial resolution not limited by lens aberrations. This technique exploits the measured diffraction pattern of a coherent beam scattered by periodic and non–periodic objects to retrieve spatial information. The diffracted intensity, for weak–scattering objects, is proportional to the modulus of the Fourier Transform of the object density distribution. Any phase information, needed to retrieve the sample density, has to be retrieved by means of suitable algorithms. This work presents a new approach b

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BROMBAL, LUCA. "X-ray Phase-Contrast Tomography: Underlying Physics and Developments for Breast Imaging." Doctoral thesis, Università degli Studi di Trieste, 2020. http://hdl.handle.net/11368/2960312.

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X-ray phase-contrast tomography is a powerful tool to dramatically increase the visibility of features exhibiting a faint attenuation contrast within bulk samples, as is generally the case of light (low-Z) materials. For this reason, the application to clinical tasks aiming at imaging soft tissues, as e.g., breast imaging, has always been a driving force in the development of this field. In this context, the SYRMA-3D project, which constitutes the framework of the present work, aims to develop and implement the first breast computed tomography system relying on the propagation-based phase-cont

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Schultz, C. H. E. "Development of New Composite Mirrors for Imaging Cherenkov Telescopes and Observations of the Two Blazar Objects 1ES 0806+524 and 1ES 1011+496 with MAGIC." Doctoral thesis, Università degli studi di Padova, 2013. http://hdl.handle.net/11577/3423409.

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This PhD thesis is addressed to the technical and scientific studies carried out in the research field of very high energy (VHE, E > 100GeV) gamma-ray astronomy, a promising discipline which is extending the frontier of our knowledge of the emission by extraterrestrial sources to the highest observable energies of the electromagnetic spectrum. Radio--loud active galactic nuclei (AGNs) are astronomical objects whose emission along relativistic jets is powered by the accretion of matter onto the disk of a supermassive black hole. Depending on the orientation of their relativistic jets, radio

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Pernuš, Agata [Verfasser], and Jörg [Akademischer Betreuer] Langowski. "Imaging mobility and interaction of c-Fos and c-Jun transcription factors in live cells: A SPIM-FCCS study / Agata Pernus ; Betreuer: Jörg Langowski." Heidelberg : Universitätsbibliothek Heidelberg, 2015. http://d-nb.info/1180500849/34.

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UBEIRA, GABELLINI MARIA GIULIA. "THE ROLE OF (SUB-)STELLAR COMPANIONS ON THE DYNAMICAL EVOLUTION OF PROTOPLANETARY DISCS." Doctoral thesis, Università degli Studi di Milano, 2020. http://hdl.handle.net/2434/798394.

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The study of planet formation has become progressively more important in the last few years given the great number of diverse exoplanets recently discovered. It is, indeed, only by studying extrasolar planetary systems embedded in their natal (protoplanetary) discs that we can make statistical studies of the range of outcomes of the planet formation process. In particular, the discs that present a cavity (transitional discs) or a gap in the dust radial profile are related to disc clearing mechanisms by young giant planets. In this Thesis, we analyze observations taken with the most advanc

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GEBBIA, ANDREA. "Analisi delle variazioni nella qualità immagine di esami di risonanza magnetica per pazienti dotati di dispositivi impiantabili attivi MR-conditional." Doctoral thesis, Università degli Studi di Milano, 2020. http://hdl.handle.net/2434/905729.

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DASGUPTA, SHUDDHA SHANKAR. "Particle Identification with the Cherenkov imaging technique using MPGD based Photon Detectors for Physics at COMPASS Experiment at CERN." Doctoral thesis, Università degli Studi di Trieste, 2017. http://hdl.handle.net/11368/2908118.

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A novel technology for the detection of single photons has been developed and implemented in 2016 in the Ring Imaging Cherenkov (RICH) detector of the COMPASS Experiment at CERN SPS. Some basic knowledge in the field of particle identification and RICH counters, Micro Pattern Gaseous Detectors (MPGDs) in general and their development for photon detection applications are provided. The characteristics of the COMPASS setup are summarized and the COMPAS RICH-1 detector is described and shown to provide hadron identification in the momentum range between 3 and 55 GeV/c. The THGEM technology is dis

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