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Dissertations / Theses on the topic 'Interventional radiology'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Berry, Max. "Virtual reality simulations and interventional radiology /." Göteborg : Department. of Radiology, Institute of Clinical Sciences, The Sahlgrenska Academy at Göteborg University, 2007. http://hdl.handle.net/2077/3188.

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2

Fermor, Paul Elliot. "Image driven fluoroscopy for interventional radiology." Thesis, University of Surrey, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.250820.

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3

Bianchini, David <1983&gt. "Dose Optimization in Cardiovascular Interventional Radiology." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amsdottorato.unibo.it/7270/1/Bianchini_PhD_Thesis.pdf.

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The thesis treat the patient dose optimization in Carbon Dioxide Angiography and dose reduction with the using of Clarity Philips in EP procedures. Carbon dioxide angiography is based on the visualization (i.e., the radiographic contrast) of gas bubbles injected in blood vessels. By using an experimental X-ray bench, it has been measured the energy response of a flat panel detector (Varian CB4030) and, with a dedicated phantom and a software simulation, the image contrast of vessels injected with Iodine and CO2. The results show that the contrast generated by carbon dioxide is about one fou

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4

Lindgren, Johanna, and Erika Gustavsson. "Strålskydd för personal som arbetar inom Interventionell Radiologi." Thesis, Umeå universitet, Institutionen för omvårdnad, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-89179.

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Bakgrund: Trots en snabb utveckling av undersökningsmetoderna inom IR har inte strålskydden utvecklats i samma takt. Den joniserande strålning som förekommer på modaliteten kan medföra en hälsorisk för personalen därav finns det stråldosgränser att hålla sig inom för att minimera risken för yrkesrelaterade strålskador. För att förebygga risken för strålningsrelaterade skador är det viktigt att undersöka olika metoder av skydd för att optimera personalens strålsäkerhet.Syfte: Syftet med studien var att belysa metoder för att reducera stråldosen för personal verksam vid interventionell radiologi

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5

De, Vos Hendrik Johannes. "Radiation dose optimization in interventional radiology and cardiology using diagnostic reference levels." Master's thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/20928.

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The International Commission of Radiological Protection (ICRP) advises that in principle Diagnostic Reference Levels (DRL) could be used in fluoroscopically guided interventional procedures to avoid unnecessary stochastic radiation risk. The increase in complexity of interventional procedures, combined with a lack of specialist training on radiation techniques, poses a significant risk to patients. These risks have not gone unnoticed by government authorities worldwide and in 2015 the South African Department of Health: Directorate Radiation Control issued requirements to license holders of in

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6

Chisha, Mike. "CT angiographic detection of cerebral aneurysms in patients with subarachnoid haemorrhage in a South African institution." Master's thesis, Faculty of Health Sciences, 2021. http://hdl.handle.net/11427/32572.

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Study rationale The incidence, location, morphology and size characteristics of cerebral aneurysms in patients presenting to Groote Schuur hospital with either subarachnoid haemorrhage or 3 rd nerve palsy have not been established by a formal audit. Objectives To determine the patient demographics, frequency of CT angiographic detection of cerebral aneurysms and aneurysmal characteristics in patients presenting to Groote Schuur Hospital with sub-arachnoid haemorrhage and /or 3 rd nerve palsy Materials and methods Computed tomographic angiographic reports of cerebral vessels of patients who pre

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7

Corbin, Nadège. "Interventional magnetic resonance elastography dedicated to the monitoring of percutaneous thermal ablations." Thesis, Strasbourg, 2015. http://www.theses.fr/2015STRAD047/document.

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Les ablations thermiques percutanées guidées par IRM sont actuellement contrôlées en temps réel grâce à la thermométrie IRM. Cependant, aucune information directement associée aux changement de propriétés intrinsèques du tissu n’est disponible pendant la procédure. Ces travaux offrent la possibilité d’un monitorage plus complet des ablations thermiques grâce à l’Elastographie par Résonance Magnétique (ERM) combinée à la thermométrie IRM. Le système proposé est composé d’un excitateur à aiguille, d’une séquence d’encodage du mouvement synchronisée sur la respiration et d’une méthode de reconstr

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8

Ahluwalia, Vishwadeep. "Optimization of Functional MRI methods for olfactory interventional studies at 3T." VCU Scholars Compass, 2009. http://scholarscompass.vcu.edu/etd/1953.

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Functional MRI technique is vital in investigating the effect of an intervention on cortical activation in normal and patient population. In many such investigations, block stimulation paradigms are still the preferred method of inducing brain activation during functional imaging sessions because of the high BOLD response, ease in implementation and subject compliance especially in patient population. However, effect of an intervention can be validly interpreted only after reproducibility of a detectable BOLD response evoked by the stimulation paradigm is first verified in the absence of the i

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9

Benmakhlouf, Hamza. "Key Data for the Reference and Relative Dosimetry of Radiotherapy and Diagnostic and Interventional Radiology Beams." Doctoral thesis, Stockholms universitet, Fysikum, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-114413.

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Accurate dosimetry is a fundamental requirement for the safe and efficient use of radiation in medical applications. International Codes of Practice, such as IAEA TRS-398 (2000) for radiotherapy beams and IAEA TRS-457 (2007) for diagnostic radiology beams, provide the necessary formulation for reference and relative dosimetry and the data required for their implementation. Research in recent years has highlighted the shortage of such data for radiotherapy small photon beams and for surface dose estimations in diagnostic and interventional radiology, leading to significant dosimetric errors tha

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10

Mont'Alverne, Francisco José Arruda. "Resultados da vertebroplastia percutânea na doença vertebral cervical." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/5/5151/tde-13022009-141428/.

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A vertebroplastia percutânea (VP) consiste na injeção de polimetilmetacrilato (PMMA) no corpo vertebral para alívio da dor e estabilização vertebral, porém seu uso na região cervical é restrito. No intuito de avaliar a efetividade e a segurança da VP na região cervical (VPC), foram avaliados 75 pacientes que se submeteram à VPC (n=101) por doença maligna (n=69) ou hemangioma vertebral (n=6) no período de janeiro de 1994 a outubro de 2007. A VPC foi realizada por uma abordagem ântero-lateral guiada por fluoroscopia. A dor foi graduada por uma escala variando de 0 a 10. O seguimento clinico (per

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11

Culver, Britt Wayne. "Technique for Repeatable Hyperosmotic Blood-Brain Barrier Disruption in the Dog." Thesis, Virginia Tech, 1997. http://hdl.handle.net/10919/36884.

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Reversible hyperosmotic blood-brain barrier disruption (BBBD) has been used in pharmaceutical research as well as human medicine to enhance drug delivery across the blood-brain barrier. However a technique for repeatable BBBD in the canine has not been described. This study describes a repeatable technique for BBBD in the dog and evaluates the clinical and morphological effects of BBBD. Using fluoroscopic guidance, an arterial catheter was directed into the internal carotid artery via the femoral artery in ten dogs. BBBD was achieved in 5 dogs using 25% mannitol while 5 control dogs received

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12

Rehn, Emelie. "Modeling of scatter radiation during interventional X-ray procedures." Thesis, Linköpings universitet, Avdelningen för radiologiska vetenskaper, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-119694.

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During catheterized x-ray interventions the patient and medical staff is exposed to scatter radiation, as a consequence of tissue interactions. Ionizing radiation for medical purpose is potentially dangerous and can cause malignancy, skin damage and more. Studies have suggested an increase in the prevalence of eye lens cataract, thyroid cancer and left sided brain tumors in doctors. Therefore, it is mandatory to reduce the radiation dose in medicine, a principle known as ALARA (as low as Reasonably Achievable). Lead aprons, collars and shieldings are safety precautions to protect the team in t

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13

Kamran, Mudassar. "Applications of novel imaging protocols and devices in interventional neuroradiology." Thesis, University of Oxford, 2015. http://ora.ox.ac.uk/objects/uuid:ccb2550c-cb28-42f1-bd95-4dcee4ec1ff4.

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The historical development, current practice, and the future of interventional neuroradiology are intricately linked to the advancements in the imaging and devices used for neuroendovascular treatments. This thesis explores the advanced imaging potential of the C-arm imaging systems used in the neurointerventional suite and investigates the initial clinical experience with a new flow diverter device to treat the intracranial aneurysms. A cohort of aneurysmal SAH patients who developed delayed cerebral ischaemia (DCI) were prospectively studied with a new parenchymal blood volume (PBV) research

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14

Hunter, Morris. "The development of a baccalaureate degree program in medical imaging technology." CSUSB ScholarWorks, 1999. https://scholarworks.lib.csusb.edu/etd-project/1857.

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Rosenqvist, Kerstin. "Transjugular intrahepatic portosystemic shunt in the treatment of symptomatic portal hypertension." Doctoral thesis, Uppsala universitet, Radiologi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-321538.

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Portal hypertension (PHT) is a condition with serious complications, such as variceal bleeding, refractory ascites and bowel ischemia. The cause of PHT may be pre-, intra- or post-hepatic. Initial treatment is pressure-reducing drugs and the treatment of acute symptoms. Ten patients presented with severe abdominal pain and acute portomesenteric venous thrombosis. Their response to systemic anticoagulation was insufficient. Treatment with primary continuous thrombolysis by a transhepatic or transjugular approach in four patients resulted in major complications, incomplete recanalization and a 7

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Ferguson, Mark R., Jason N. Wright, Anh-Vu Ngo, Sarah M. Desoky, and Ramesh S. Iyer. "Imaging of Acute Appendicitis in Children." GEORG THIEME VERLAG KG, 2017. http://hdl.handle.net/10150/625179.

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Acute appendicitis is a common cause of abdominal surgery in children, and is the result of appendiceal luminal obstruction and subsequent inflammation. The clinical presentation is often variable, allowing imaging to play a central role in disease identification and characterization. Ultrasound is often the modality of choice for diagnosis of appendicitis in children. Ready availability and lack of ionizing radiation are attractive features of sonography, though operator dependence is a potential barrier. Computed tomography (CT) was historically the preferred modality in children, as in adul

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17

Deschler, Thomas. "Développement d'un système dosimétrique pour la radiologie interventionnelle." Thesis, Strasbourg, 2018. http://www.theses.fr/2018STRAE016.

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La prévention des effets biologiques radio-induits en radiologie interventionnelle nécessite une estimation complète de l’exposition à la peau et aux organes du patient. Dans ce contexte, un logiciel permettant une reconstruction post-opératoire précise et rapide de la dosimétrie du patient par méthode Monte Carlo, a été développé. L’utilisation de techniques de réduction de variance et de navigation voxélisée avancées permet une amélioration significative du temps de calcul. Des fantômes anthropomorphes de dernière génération, couplés à la lecture des paramètres d’irradiation, permettent une

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Barbosa, Leandro de Assis. "Estudo experimental dos efeitos da embolização renal com partículas de trisacryl e de polivinil acetato recoberto com polivinil álcool." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/5/5151/tde-24022010-143511/.

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A embolização intra-arterial é rotineiramente utilizada na prática clinica como co-adjuvante pré-operatório ou controle de tumores, tratamento de malformações arteriovenosas e outras doenças vasculares. Em vários casos é realizada com uso de partículas de diferentes formas e composições. Um agente embolizante esférico e utilizado com bons resultados é o trisacryl (Embosphere®; BioSphere® Medical). Um novo agente embólico - polivinil acetato esférico cobertas com polivinil álcool (PVAc) foi desenvolvido recentemente no Brasil. Este trabalho tem objetivo de avaliar, após embolização renal, o gr

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Vouche, Michael. "Radiation Segmentectomy, Radiation Lobectomy and Response Assessment after 90Yttrium Radioembolization for Hepatocellular carcinoma: Imaging and Clinical Implications." Doctoral thesis, Universite Libre de Bruxelles, 2017. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/241979.

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Hepatocellular carcinoma is a primary liver cancer.Among treatment options for hepatocellular carcinoma, Yttrium-90 radioembolization is a promising transarterial therapy.This thesis investigates potential clinical applications of radioembolization in the treatment of the hepatocellular carcinoma (techniques of radiation segmentectomy and radiation lobectomy), and adress the problematic of the response Assessment after radioembolization.<br>Doctorat en Sciences médicales (Médecine)<br>info:eu-repo/semantics/nonPublished

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Daniels, Barret R. "Magnetic Resonance Guided Nasojejunal Feeding Tube Placement for Neonates." University of Cincinnati / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1439281638.

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21

Arvellos, André Noronha. "Avaliação tomográfica dos parâmetros anatômicos relevantes na punção renal percutânea nos decúbitos ventral e dorsal." Universidade Federal de Juiz de Fora, 2011. https://repositorio.ufjf.br/jspui/handle/ufjf/2118.

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Principi, Sara. "Development of methodologies for estimating the dose to the eye lens in interventional radiology : operational implications of the eye lens new dose limit." Doctoral thesis, Universitat Politècnica de Catalunya, 2017. http://hdl.handle.net/10803/620729.

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Recent epidemiological evidences on very late opacities or cataract manifestation, has led to a review of the actual limit for the eye lens (150 mSv/year) for workers exposed to ionizing radiation. ICRP 118 recommends reducing the limit to 20 mSv per year. This drastic change in the dose limit has been incorporated into the revised European and International Basic Safety Standards (European Commission 2013, International Atomic Energy Agency 2014) and it should be implemented in national legislation of member states in 2018. Up to now, eye lens dose is not routinely measured and there are no g

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Aberdour, Mark J. "Changes in Platelet Aggregation and Activation in Patients Undergoing Interventional Neuroradiology Procedures: Can Point-Of-Care Devices Assist in Predicting Complications?" Thesis, Griffith University, 2019. http://hdl.handle.net/10072/389745.

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Introduction/Aims: Patients undergoing interventional neuroradiology (IVN) procedures to treat intracranial aneurysms experience a minor, but potentially life threatening risk of thromboembolic or haemorrhagic complications. Antiplatelet medications, such as clopidogrel and aspirin, are routinely administered pre-operatively for elective IVN procedures to reduce the risk of thromboembolic events. There are known hyper- or hypo-effective responses to these pre-operative antiplatelet medications, notably clopidogrel, which may insufficiently inhibit platelet function in some patients and increas

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Hernández, Cabrera Wendy. "Páncreas Porcino: Modelo anatómico y Abordaje Endovascular para Terapias Celular y Génica." Doctoral thesis, Universidad de Murcia, 2010. http://hdl.handle.net/10803/10720.

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El uso de modelos animales constituye una herramienta esencial para investigar la etiología y patogenia de la diabetes, así como para desarrollar tratamientos efectivos: el transplante de islotes pancreáticos o ingeniería genética. El éxito de estas terapias depende en gran medida de la correcta elección de la vía de administración. Objetivos: 1.- Estudiar la anatomía e histología del páncreas porcino; 2.- Describir la anatomía seccional de la región pancreática mediante RM y secciones anatómicas plastinadas; 3.- Confirmar que las arterias pancreáticas terminales en el cerdo constituyen una r

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Yabuta, Minoru. "Long-term Outcome of Percutaneous Interventions for Hepatic Venous Outflow Obstruction after Pediatric Living Donor Liver Transplantation: Experience from a Single Institute." Kyoto University, 2015. http://hdl.handle.net/2433/199187.

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Iqeilan, Nabil. "Entrance Skin Dose Measurement Using GafChromic Dosimetry Film for Patients Undergoing Coronary Angiography (CA) and Percutaneous Transluminal Coronary Angiography (PTCA) Procedures." Thesis, Stockholm University, Medical Radiation Physics (together with KI), 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-7213.

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<p>Interventional radiological procedures often require long fluoroscopic exposure times and high levels of radiation exposure to patients, which often are higher than most radiological examinations except for computed tomography (CT) whose effective doses can be higher, and in addition to having radiation risks that are higher for both patient and medical staff. Therefore it is important to monitor and map the radiation entrance exposure to the patients, to minimize the probability of skin injury, and to detect areas of overlapping radiation fields. The aim of this thesis is to evaluate patie

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Wiippa, Beatrice, and Sadaf Azarnia. "Förebygger kirurgiska munskydd infektion hos patienten vid interventionell radiologi? : en litteraturöversikt." Thesis, Luleå tekniska universitet, Institutionen för hälsovetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-71783.

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Introduktion: Ett av röntgensjuksköterskans ansvarsområden är att förebygga spridning av vårdrelaterade infektioner, och inom interventionell radiologi innebär detta att arbeta med aseptisk teknik. Munskydd har varit standard inom kirurgi i ett århundrade men inom interventionell radiologi saknas nationella riktlinjer för dess användande, trots att den sterila tekniken i övrigt är densamma. Syfte: Syftet med denna litteraturöversikt var att klargöra huruvida kirurgiska munskydd kan förebygga infektion hos patienten vid interventionell radiologi. Metod: Studien genomfördes som en allmän littera

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Mignot, Leo. "Sociogenèse d’une spécialité médicale : le cas de radiologie interventionnelle." Thesis, Bordeaux, 2017. http://www.theses.fr/2017BORD0902.

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Initiée dans les années 1960, la radiologie interventionnelle comprend les actes médicaux invasifs ayant pour but le traitement ou le diagnostic d’une pathologie réalisés sous guidage ou sous contrôle d’un moyen d’imagerie. L’enjeu de la thèse est de développer l’analyse sociohistorique de l’émergence d’une spécialité médicale – la radiologie interventionnelle – et d’en étudier les stratégies de légitimation. Trois axes d’investigation interdépendants sont plus particulièrement privilégiés. Le premier d’entre eux vise à comprendre comment est née cette pratique médicale en établissant l’archéo

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Tacher, Vania. "Optimisation du guidage tri-dimensionel en radiologie interventionnelle." Thesis, Paris Est, 2017. http://www.theses.fr/2017PESC0020.

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L’optimisation du guidage en radiologie interventionnelle implique de simplifier les gestes, d’améliorer la qualité d’images et leur précision tout en réduisant l’exposition aux rayons X du personnel soignants et des patients et l’usage du produit de contraste iodé, néphrotoxique. Elle implique un travail sur chacune des quatre étapes fondamentales de chaque intervention que sont : « voir », « atteindre », « intervenir » et « contrôler » le succès de l’intervention et l’absence de complication.L’étape « voir » la cible a fait l’objet de 3 études : la première, animale, portait sur l’améliorati

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Muller, Henra. "Patient radiation dose ranges for procedures in Universitas Hospital vascular laboratories." Thesis, Bloemfontein: Central University of Technology, Free State, 2014. http://hdl.handle.net/11462/674.

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Thesis (M. Tech. (Diagnostic Radiography)) Central University of Technology, Free State, 2014<br>Over the past two decades, interventional radiology has been a fast developing field with great advances in technology in the diagnosing and treatment of patients. Interventional radiology procedures are minimally invasive and require little to no hospitalisation time. These procedures are fluoroscopically guided and serial runs are used for documentation, so they have the potential to deliver high doses to patients. Reports about deterministic skin reactions resulting from interventional radiology

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Bacchim, Neto Fernando Antonio. "Caracterização das exposições ocupacionais e eficiência da dosimetria pessoal em radiologia intervencionista vascular." Botucatu, 2017. http://hdl.handle.net/11449/190996.

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Orientador: Diana Rodrigues Pina<br>Resumo: A Radiologia Intervencionista (RI) é a área da medicina que proporciona as maiores exposições ocupacionais. Os valores de dose aos quais os intervencionistas são expostos são difíceis de padronizar. Nesta pesquisa apresentamos uma avaliação completa das exposições ocupacionais e determinamos a eficiência de distintos métodos de dosimetria pessoal utilizados na RI. Essa pesquisa foi abordada em 2 etapas, conforme descrito a seguir: A primeira etapa se baseou em caracterizar as exposições ocupacionais em diferentes modalidades de procedimentos de RI va

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Izaaryene, Jalal-Jean. "Etude expérimentale de l'apport de nouvelles techniques dans les ablatermies tumorales percutanées pulmonaires." Thesis, Aix-Marseille, 2017. http://www.theses.fr/2017AIXM0195/document.

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Les techniques d’ablations percutanées sont des procédés de radiologie interventionnelle ayant pour objectif la prise en charge mini invasive des pathologies tumorales. La technique la plus répandue est la radiofréquence. De nouvelles techniques (micro-ondes et la cryothérapie) ont fait leur apparition récemment élargissent le champ des possibles. A travers ce travail nous avons mis en avant différentes innovations significatives dans la prise en charge des patients tout au long de leur parcours. Nous avons tenté de montrer que les techniques émergentes telle que les micro-ondes sont des techn

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Silva, André Goyanna Pinheiro. "Tratamento endovascular das fístulas carotidocavenosas indiretas." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/5/5151/tde-16102014-094552/.

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As fístulas arteriovenosas da região do seio cavernoso constituem as fístulas carotidocavernosas que podem ser diretas ou indiretas. As indiretas são raras, a sua sintomatologia é variada e o tratamento é controverso. Este estudo compreendeu a análise prospectiva de 44 pacientes portadores de fístulas carotidocavernosas indiretas (FCCI) no período de 01 de janeiro de 1994 e 31 de janeiro de 2004, 42 com etiologia espontânea e dois pacientes com etiologia traumática, sendo estes analisados separadamente. Doze (12) pacientes foram submetidos à conduta expectante e orientados a realizar manobras

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Conti, Mario Luiz Marques. "Tratamento endovascular das malformações arteriovenosas raquimedulares: resultados clínicos e angiográficos." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/5/5151/tde-10102014-122816/.

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Trinta e cinco pacientes com malformações arteriovenosas raquimedulares (MAVR) foram tratados por via endovascular. Foram analisados os tipos de MAVR, bem como os aspectos clínicos e angiográficos pré e pós-tratamento endovascular. As MAVR mais freqüentes foram as fístulas arteriovenosas durais (FAD), com 17 pacientes, seguidas das malformações arteriovenosas intramedulares (MAI), fístulas arteriovenosas perimedulares (FAVP) e malformações arteriovenosas metaméricas (MAVM). A avaliação do resultado do tratamento foi dividida em sucesso técnico e clínico, sendo que o primeiro foi subdividido em

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Stroszczynski, Christian. "Einsatz der Magnetresonanztomographie zur Laser-induzierten Thermotherapie." Doctoral thesis, Humboldt-Universität zu Berlin, Medizinische Fakultät - Universitätsklinikum Charité, 2002. http://dx.doi.org/10.18452/13821.

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Thermoablationsverfahren werden in der klinischen Routine zur Therapie bei Patienten mit primären Lebertumoren und Lebermetastasen eingesetzt, bei denen von einer Operation abgesehen wird. Die laserinduzierte Thermotherapie (LITT) ist ein minimal invasives radiologisches Verfahren zur perkutanen Tumorablation. Mit der Magnetresonanztomographie (MRT) am Hochfeldtomographen (1.5 Tesla) steht eine radiologische Methode mit der Option einer präzisen Prozesskontrolle der Thermoablation und einer suffizienten Erfolgskontrolle zur Verfügung. Ziel dieser Arbeit war es, im Tierexperiment die Anwendung

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Nevala, T. (Terhi). "Endovascular treatment of an abdominal aortic aneurysm:mid-term results and management of a type II endoleak." Doctoral thesis, University of Oulu, 2010. http://urn.fi/urn:isbn:9789514261343.

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Abstract Endovascular aneurysm repair (EVAR) is a minimally invasive alternative to open surgery to exclude an abdominal aortic aneurysm from the circulation to avert a rupture. The aim of this thesis was to evaluate the early and mid-term results of EVAR using the Zenith® stent-graft (Cook Inc, Bloomington, IN, USA) in asymptomatic and symptomatic abdominal aortic aneurysm (AAA) patients in three Finnish university hospitals. Furthermore, the aim was to study whether preoperative embolization of the inferior mesenteric artery (IMA) before EVAR decreases the incidence of a type II endoleak or

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Gonçalves, Octavio Meneghelli Galvão. "Estudo comparativo entre microesferas de 100-300um e 300-500um utlizadas na embolização das artérias prostáticas para o tratamento dos sintomas urinários decorrentes da hiperplasia prostática benigna." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/5/5151/tde-08052018-112846/.

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Introdução: O desenvolvimento de novos procedimentos cirúrgicos minimamente invasivos para o tratamento dos sintomas do trato urinário inferior (LUTS), relacionados à hiperplasia prostática benigna (HPB), está se tornando importante campo de pesquisa, na medida em que tenta minimizar os efeitos adversos e complicações decorrentes dos tratamentos convencionais. A embolização das artérias prostáticas (EAP) vem sendo utilizada como alternativa para o tratamento de pacientes com HPB. O objetivo deste trabalho é avaliar e comparar a segurança e eficácia da EAP para o tratamento dos LUTS em paciente

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Kastler, Adrian. "Presentation, optmization and result of new methods of infiltration and neurolysis under CT guidance in the management of pain." Thesis, Besançon, 2014. http://www.theses.fr/2014BESA3017/document.

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Au cours des 20 dernières années, l'utilisation de méthode de guidage par imagerie s'est progressivemen imposé comme gold standar dans nombre d'indications Interventionel antidouleur. Les modalités de guidage els plus utilisés sont la fluoroscopie et l'échographie. Le Scanner est relativement sous-utilisé dans le domaine de la prise en charge interventionnelle de la douleur, principalement en raison des difficultés d'accès et de Disponibilités pour les praticiens de la douleur. Au travers de cette thèse, nous avons montré l'intérêt du guidage scanner dans plusieurs indications avec de bons rés

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Azevedo, Luiz Lanziotti de. "Injetor intravascular de CO2: estudo in vivo de viabilidade inicial do dispositivo e de qualidade de imagem." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/5/5132/tde-08042016-122000/.

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INTRODUÇÃO: Durante procedimentos endovasculares, estão presentes os riscos relacionados ao uso dos contrastes iodados, tais como a nefropatia por contraste, uma vez que é fundamental o emprego de um meio de contraste para a obtenção das imagens radiológicas vasculares. A injeção intravascular de gás CO2 purificado é reconhecidamente uma alternativa relativamente mais segura ao contraste iodado, contudo, seu manuseio artesanal pode também trazer dificuldades técnicas e riscos aos pacientes. Para contemplar estas questões, foi desenvolvido o protótipo de um injetor intravascular de CO2

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Júnior, Antenor Tavares de Sá. "Alterações de difusão e perfusão cerebral por RM em angioplastia carotídea com \"stent\" sob proteção cerebral por filtros." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/5/5151/tde-22022010-171639/.

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INTRODUÇÃO: A angioplastia carotídea com stent (ACS) sob proteção cerebral é opção terapêutica em pacientes com estenose carotídea. Existe o risco de embolia apesar da utilização do filtro e as modificações na perfusão cerebral após tratamento da estenose carotídea não são claras. O propósito deste estudo é avaliar, após ACS sob proteção cerebral por filtros, modificações nas seqüências de RM de difusão (DWI) e perfusão (PWI), correlacionando-as com os aspectos técnicos da ACS, com as características da estenose e com dados demográficos dos pacientes. MÉTODO: Trinta e seis pacientes portadores

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Hermansson, Adriana, and Elvira Hjelm. "Reducering av stråldos vid angiografi/intervention." Thesis, Uppsala universitet, Radiologi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-351518.

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Bakgrund: Utvecklingen av genomlysnings-baserade interventioner har varit framgångsrika de senaste årtiondena, då det gäller behandling av patienter. Införandet av genomlysning har dock medfört risker, för både patient och personal. Detta på grund av att stråldoser ökat i takt med en större efterfrågan på genomlysning och en utveckling av mer avancerade undersökningar. Med tanke på att stråldosen från intervention har en biologisk långtidseffekt, så är strålskydd ett upp-märksammat och återkommande ämne då det påverkar både sjukvårdspersonal, patienter och sam-hället. Brist på strålskydd och o

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Carnevale, Francisco Cesar. "Terapêutica endovascular percutânea na oclusão arterial ilíaca crônica." Universidade de São Paulo, 1999. http://www.teses.usp.br/teses/disponiveis/5/5151/tde-08012007-133924/.

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A revascularização da oclusão arterial ilíaca crônica com implante de endoprótese vascular é uma nova modalidade terapêutica para os pacientes com aterosclerose obliterante das extremidades. Os objetivos deste trabalho são verificar: os resultados clínico e radiológico do tratamento percutâneo com implante de endoprótese vascular nas oclusões arteriais crônicas do território ilíaco; a influência da aterosclerose e seus principais fatores de risco; os principais sintomas clínicos segundo os estágios de Fontaine e o comportamento das endopróteses vasculares, avaliando as permeabilidades primária

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Spencer, Benjamin. "On-line C-arm intrinsic calibration by means of an accurate method of line detection using the radon transform." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAS044/document.

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Les ``C-arm'' sont des systémes de radiologie interventionnelle fréquemment utilisés en salle d'opération ou au lit du patient. Des images 3D des structures anatomiques internes peuvent être calculées à partir de multiples radiographies acquises sur un ``C-arm mobile'' et isocentrique décrivant une trajectoire généralement circulaire autour du patient. Pour cela, la géométrie conique d'acquisition de chaque radiographie doit être précisément connue. Malheureusement, les C-arm se déforment en général au cours de la trajectoire. De plus leur motorisation engendre des oscillations non reproductib

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Barbé, Laurent De Mathelin Michel. "Téléopération avec retour d'efforts pour les interventions percutanées." Strasbourg : Université Louis Pasteur, 2007. http://eprints-scd-ulp.u-strasbg.fr:8080/836/01/BARBE_Laurent_2007.pdf.

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Fernandez-Gutierrez, Fabiola. "Workflow analysis, modelling and simulation for improving conventional and MRI-guided vascular interventions." Thesis, University of Dundee, 2014. https://discovery.dundee.ac.uk/en/studentTheses/6b7fca49-19ba-47b0-831a-ca9677084a7a.

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This thesis proposes a multidirectional methodological framework for a comprehensive ergonomic analysis and modelling of workflow for multi-modal vascular image-guided procedures (IGPs). Two approaches are employed to analyse the workflow: Discrete Event Simulation (DES) and purpose-oriented physical models. In contrast to previous studies, the proposed methodology looks in detail the actions carried out within the intervention rooms and the clinical experience during the procedures with three main objectives: to provide a deeper understanding of vascular procedures, to predict the impact of p

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Abdelaziz, Salih. "Développement d'un système robotique pour la radiologie interventionnelle sous IRM." Phd thesis, Université de Strasbourg, 2012. http://tel.archives-ouvertes.fr/tel-00801844.

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La réalisation de gestes percutanés dans l'IRM ouvre la voie à des pratiques médicales prometteuses. En revanche, l'utilisation de l'IRM reste à ce jour limitée, et ce malgré l'intérêt en terme de qualité d'image. Cela est dû principalement à l'étroitesse du tunnel et à la complexité des gestes réalisés. Pour rendre accessibles de telles pratiques, une assistance robotique semble très pertinente. Pour le concepteur, la réalisation d'un système robotisé compatible IRM n'est pas une tâche facile, étant donné l'espace disponible et la présence d'un champ magnétique intense. C'est dans ce contexte

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Cavalcante, Fernanda Rocha. "Simulação Monte Carlo de cenários de radiologia intervencionista pediátrica no código MCNPX." Universidade Federal de Sergipe, 2017. https://ri.ufs.br/handle/riufs/5271.

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Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq<br>Interventional radiology consists of minimally invasive procedures guided by real-time X-ray imaging of a region of the patient to be diagnosed or treated. Since it is a practice that uses ionizing radiation, performing these procedures should follow the three basic principles of radioprotection, which are justification, optimization (medical exposure), and dose limitation (occupational exposure). Interventional procedures in children with congenital heart defects are justified b

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Nicolau, Stephane. "Un système de réalité augmentée pour guider les opérations du foie en radiologie interventionnelle." Phd thesis, Université de Nice Sophia-Antipolis, 2004. http://tel.archives-ouvertes.fr/tel-00000006.

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En radiologie interventionnelle, le praticien se sert actuellement de plusieurs acquisitions scanner (coupes 2D) pour pouvoir atteindre sa cible au cours d'une ponction percutanée dans la zone abdominale. Notre objectif est de concevoir un système de guidage minimisant ces acquisitions et donc le temps de l'intervention. Pour cela, nous proposons un système de réalité augmentée superposant des reconstructions 3D pré-opératoires des structures abdominales du patient dans des images vidéo externes de son corps. En plus d'être précis, rapide et fiable, cet outil devra pouvoir être introduit aisém

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Geijer, Håkan. "Radiation dose and image quality in diagnostic radiology : optimization of the dose - image quality relationship with clinical experience from scoliosis radiography, coronary intervention and a flat-panel digital detector /." Linköping : Univ, 2001. http://www.bibl.liu.se/liupubl/disp/disp2001/med706s.htm.

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Ojala, R. (Risto). "MR-guided interventions at 0.23T:facilities, user interface, guiding technology and musculoskeletal applications." Doctoral thesis, University of Oulu, 2002. http://urn.fi/urn:isbn:9514266382.

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Abstract Magnetic resonance imaging (MRI) has excellent soft tissue contrast, which can be enhanced by different contrast agents, multiplanar imaging capability and high temporal and spatial resolution. Even blood vessels can be easily visualised, and MRI parameters are sensitive to temperature. Therefore, MRI has the greatest potential for guiding and monitoring interventional and surgical procedures. The aim of this study was to design and evaluate new solutions for MR-guided procedures and surgery, to develop the technique and to assess the feasibility of MR-guided nerve root infilt

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