Academic literature on the topic 'Respiratory imaging'

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Dissertations / Theses on the topic "Respiratory imaging"

1

Boucneau, Tanguy. "Magnetic resonance imaging of respiratory mechanics." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS165.

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La fonction respiratoire chez l'homme est indissociable du mouvement de déformation du poumon : les échanges gazeux entre l'organisme et son environnement sont rendus possibles, lors de l'inspiration, par le gonflement des alvéoles du parenchyme pulmonaire, et lors de l'expiration, par un retour passif à l'état d'équilibre statique du poumon. Les propriétés viscoélastiques des tissus pulmonaires jouent un rôle clé dans la fonction même de cet organe. Ces éléments de la mécanique respiratoire pourraient être des biomarqueurs très sensibles de l'état physiopathologique du poumon puisqu'ils dépen
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2

Schleyer, Paul. "Respiratory motion correction in PET/CT imaging." Thesis, King's College London (University of London), 2012. https://kclpure.kcl.ac.uk/portal/en/theses/respiratory-motion-correction-in-petct-imaging(001f09fd-b405-4cbf-9ff7-9ba6541f3dab).html.

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In dual modality PET-CT imaging, respiratory motion can introduce blurring in PET images and create a spatial mismatch between the PET and CT datasets. Attenuation correction errors can result from this mismatch, which can produce severe artefacts that potentially alter the clinical interpretation of the images. Various approaches of reducing these effects have been developed. Many involve respiratory gated acquisitions which generally require a measure of the respiratory cycle throughout imaging. In this work, a retrospective respiratory gating technique was devel¬oped for both PET and CT whi
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3

Fry, Michael W. "Multiphase assessment of respiratory function." Thesis, California State University, Long Beach, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1596462.

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<p> The emergence of more sophisticated full body plethysmograph systems has occurred over recent years and called for broader testing of respiratory functions. Specific airway resistance and intrathoracic gas volume or functional residual capacity can provide more accurate measure of lung function utilizing a computerized full body plethysmograph. Clinics or specialized test facilities today could use this type of system for testing, evaluation, and long term monitoring of patients suspected of suffering from pulmonary disease of which there is no cure. A virtual machine was used for pulmo
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4

Baumgartner, Christian. "Manifold alignment for imaging and modelling respiratory motion." Thesis, King's College London (University of London), 2016. https://kclpure.kcl.ac.uk/portal/en/theses/manifold-alignment-for-imaging-and-modelling-respiratory-motion(a20491dc-7894-485b-a833-57fa57d62e2a).html.

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Respiratory motion a ects a wide range of techniques in the eld of medical image acquisition and analysis. In image-guided interventions it may cause misalignment of static road maps with the patient's anatomy. In imaging such as magnetic resonance (MR) imaging or positron emission tomography (PET) it may cause the images to appear blurred which may impede disease diagnosis and staging. Manifold learning is a powerful tool for the non-linear dimensionality reduction of imaging data, which can be used to uncover the data's dominating sources of motion. By aligning low-dimensional embeddings of
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5

Lidegran, Marika. "Advanced radiological imaging in patients treated with extracorporeal membrane oxygenation /." Stockholm, 2006. http://diss.kib.ki.se/2006/91-7140-933-5/.

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6

Craven, Thomas Henry John. "Resolving uncertainty in acute respiratory illness using optical molecular imaging." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/29507.

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Ventilator associated pneumonia (VAP) and acute respiratory distress syndrome (ARDS) are two respiratory conditions unique to mechanically ventilated patients. The diagnosis of these conditions, and therefore any subsequent treatment, are befuddled by uncertainty. VAP rates vary considerably according to the diagnostic or surveillance criteria used. The pathogenesis of ARDS is well understood but when the internationally agreed consensus criteria are employed, the histological hallmarks are absent about half the time, indicating a disconnection between the clinical diagnosis and what is known
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7

Ooi, Gaik Cheng, and 黃玉清. "Role of imaging in evaluation of lung involvement in severe acute respiratory syndrome (SARS)." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2010. http://hub.hku.hk/bib/B47468713.

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Diagnostic imaging played a substantial role in the management and treatment of patients during the Severe Acute Respiratory Syndrome (SARS) outbreak when daily chest radiographs were performed as a measure of disease severity and respiratory status. This thesis was performed to address several issues relating to the radiological spectrum of SARS, its temporal pattern on chest radiograph and high resolution computed tomography (HRCT) during the course of disease, and relationships between severity of opacities quantified on chest radiographs and clinical parameters including treatment
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8

Scott-Jackson, William. "Marker-less respiratory gating for PET imaging with intelligent gate optimisation." Thesis, University of Surrey, 2018. http://epubs.surrey.ac.uk/849418/.

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PET image degradation imposed by patient respiratory motion is a well-established problem in clinical oncology; strategies exist to study and correct this. Some attempt to minimise or arrest patient motion through restraining hardware; their effectiveness is subject to the comfort and compliance. Another practice is to gate PET data based on signals acquired from an external device. This thesis presents several contributions to the field of respiratory motion correction research in PET imaging. First and foremost, this thesis presents a framework which allows a researcher to process list mode
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9

Fayad, Hadi. "Respiratory motion modeling for use in diagnostic imaging and radiation therapy." Brest, 2011. http://www.theses.fr/2011BRES2058.

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Les déformations associées au mouvement respiratoire sont l’un des paramètres principaux réduisant la sensibilité et la spécificité au niveau thoracique et abdominal. En outre, le mouvement respiratoire diminue la précision dans la fusion d’images acquises en utilisant un système combiné tomographie à émission de positron / tomodensitométrie (TEP/TDM). Les solutions existantes à jour incluent l’acquisition des images TDM et TEP synchronisées avec la respiration. Cependant, les différences entre l'acquisition 4D TEP et 4D TDM, dues aux conditions de respiration différentes pour ces deux modalit
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10

Lenk, Mary Claire. "Respiratory Motion Tracking in Magnetic Resonance Imaging with Pilot Tone Technology." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1531838630931375.

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