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Dissertations / Theses on the topic 'Acoustic radiation force impulse'

Author: Grafiati

Published: 4 June 2021

Last updated: 30 January 2023

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1

Trindade, Ana Filipa Parrano. "Aplicação clínica - avaliação da técnica acoustic radiation force impulse." Master's thesis, Faculdade de Ciências e Tecnologia, 2013. http://hdl.handle.net/10362/11401.

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Dissertação para obtenção do Grau de Mestre em Engenharia Biomédica<br>Introdução & Objectivos: A elastografia é uma área da ultra-sonografia que muito tem beneficiado com os avanços tecnológicos da última década, sendo isto traduzido por uma grande inovação nesta área. A técnica ARFI surge neste panorama como uma nova técnica ultra-sonográfica de quantificação efectiva de rigidez de tecidos em comparação com as técnicas existentes que apenas permitiam a quantificação relativa. A realização deste projecto tem como objectivo avaliar a técnica ARFI na quantificação da rigidez hepática, em partic

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Diogo, Lucia Maria Izique. "Elastografia Acoustic Radiation Force Impulse (ARFI) das estruturas do joelho canino /." Jaboticabal, 2018. http://hdl.handle.net/11449/153996.

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Orientador: Bruno Watanabe Minto<br>Resumo: O presente estudo objetiva estabelecer padrões elastográficos normais das principais estruturas da articulação femorotibiopatelar (joelho) de cães saudáveis, em diferentes faixas etárias. Foram examinados 30 cães (60 articulações) da raça Beagle sem alterações musculoesqueléticas, os quais foram distribuídos em três grupos: jovens, adultos e idosos. Realizou-se elastografia ARFI do ligamento patelar, menisco medial, ligamento cruzado caudal e ligamento cruzado cranial de cada articulação. Análises qualitativas e quantitativas detectaram correlação po

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3

Abreu, Thais Guimarães Morato. "Elastografia acoustic radiation force impulse (ARFI) em lentes de cães com catarata /." Jaboticabal, 2019. http://hdl.handle.net/11449/181665.

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Orientador: Marcus Antônio Rossi Feliciano<br>Resumo: Os objetivos deste estudo foram avaliar a acurácia da elastografia Acoustic Radiation Force Impulse na diferenciação entre lentes normais e com catarata, além de correlacionar o grau de rigidez da lente intraocular com os parâmetros avaliados durante a facoemulsificação (tempo de ultrassom, controle de vácuo e quantitativo de solução salina balanceada). No total, 145 olhos de 98 cães foram avaliados e divididos em grupos de lentes normais e de acordo com o estágio da catarata.. A velocidade de cisalhamento (VC) (m/s) do núcleo foi estatisti

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Hübner, Janina. "Nicht-invasive Evaluation der chronischen Transplantatnephropathie mittels Acoustic Radiation Force Impulse (ARFI) - Elastographie." Doctoral thesis, Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-202643.

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Das terminale Nierenversagen ist infolge von chronischen Erkrankungen wie beispielsweise Diabetes mellitus oder Glomerulonephritiden von besonderer klinischer Bedeutung. Die Nierentransplantation stellt für diese Patienten die einzige kurative Therapieoption dar, die zu einer verbesserten Lebensqualität und erhöhten Lebenserwartung führt. Nichtsdestotrotz besteht die Gefahr eines Transplantatverlustes. Organabstoßung oder chronische Transplantatschädigungen können zu chronischer Transplantatnephropathie mit interstitieller Fibrose und Tubulusatrophie führen. Diese werden im aktuellen klinische

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Maronezi, Marjury Cristina [UNESP]. "Elastografia acoustic radiation force impulse (ARFI), doppler e ultrassonografia contrastada do baço canino." Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/135871.

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Submitted by MARJURY CRISTINA MARONEZI null (marjury_mah@hotmail.com) on 2016-03-03T18:59:26Z No. of bitstreams: 1 Dissertação Marjury.pdf: 1008361 bytes, checksum: 61c06a0623c77a91cd63571d5a013b0d (MD5)<br>Approved for entry into archive by Sandra Manzano de Almeida (smanzano@marilia.unesp.br) on 2016-03-04T12:49:29Z (GMT) No. of bitstreams: 1 maronezi_mc_me_jabo.pdf: 1008361 bytes, checksum: 61c06a0623c77a91cd63571d5a013b0d (MD5)<br>Made available in DSpace on 2016-03-04T12:49:29Z (GMT). No. of bitstreams: 1 maronezi_mc_me_jabo.pdf: 1008361 bytes, checksum: 61c06a0623c77a91cd63571d5a013b

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Maronezi, Marjury Cristina. "Elastografia acoustic radiation force impulse (ARFI), doppler e ultrassonografia contrastada do baço canino /." Jaboticabal, 2016. http://hdl.handle.net/11449/135871.

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Orientador: Marcus Antônio Rossi Feliciano<br>Coorientador: Wilter Ricardo Russiano Vicente<br>Coorientador: Júlio Carlos Canola<br>Banca: Leandro Zuccolotto Crivellenti<br>Banca: Eliandra Antônia Pires Buttler<br>Resumo: O baço é um órgão que desenvolve inúmeras funções importantes no organismo e é um dos principais locais para o desenvolvimento de tumores primários, metastáticos e afecções do sistema hematopoiético, por isso realizar uma avaliação apurada neste órgão é de suma importância, em Medicina veterinária, particularmente em cães devido à importância econômica, afetiva e de similarid

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Fernandez, Stephanie [UNESP]. "Elastografia Acoustic Radiation Force Impulse (ARFI) e Doppler na avaliação das glândulas adrenais de cães hígidos." Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/141982.

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Submitted by STEPHANIE FERNANDEZ null (stephanie-fernandez@bol.com.br) on 2016-07-29T13:40:35Z No. of bitstreams: 1 Dissertação_Stephanie_Fernandez.pdf: 1446827 bytes, checksum: 925299d17e87eff77a5da3fc85cde694 (MD5)<br>Approved for entry into archive by Ana Paula Grisoto (grisotoana@reitoria.unesp.br) on 2016-08-02T13:12:03Z (GMT) No. of bitstreams: 1 fernandez_s_me_jabo.pdf: 1446827 bytes, checksum: 925299d17e87eff77a5da3fc85cde694 (MD5)<br>Made available in DSpace on 2016-08-02T13:12:03Z (GMT). No. of bitstreams: 1 fernandez_s_me_jabo.pdf: 1446827 bytes, checksum: 925299d17e87eff77a5da

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Garcia, Paulo Henrique de Souza [UNESP]. "Ultrassonografia convencional e elastografia ARFI (Acoustic Radiation Force Impulse) na avaliação renal de gatos adultos hígidos." Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/143065.

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Submitted by PAULO HENRIQUE DE SOUZA GARCIA null (paulousvet@gmail.com) on 2016-08-16T11:40:16Z No. of bitstreams: 1 Ultrassonografia convencional e Elastografia ARFI na aaliação renal e gatos adultos hígidos.pdf: 2204900 bytes, checksum: 6acbf410866645d13616b8dc7610bd26 (MD5)<br>Approved for entry into archive by Ana Paula Grisoto (grisotoana@reitoria.unesp.br) on 2016-08-16T14:18:14Z (GMT) No. of bitstreams: 1 garcia_phs_me_jabo.pdf: 2204900 bytes, checksum: 6acbf410866645d13616b8dc7610bd26 (MD5)<br>Made available in DSpace on 2016-08-16T14:18:14Z (GMT). No. of bitstreams: 1 garcia_phs_

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Garcia, Paulo Henrique de Souza. "Ultrassonografia convencional e elastografia ARFI (Acoustic Radiation Force Impulse) na avaliação renal de gatos adultos hígidos /." Jaboticabal, 2016. http://hdl.handle.net/11449/143065.

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Orientador: Marcus Antônio Rossi Feliciano<br>Coorientador: Wilter Ricardo Russiano Vicente<br>Coorientador: Ciblele Figueira de Carvalho<br>Banca: Eliandra Antonia Pires Buttler<br>Banca: Leandro Zuccolotto Crivellenti<br>Resumo: O exame ultrassonográfico convencional tem baixa especificidade para detecção de alterações difusas, no entanto, o aumento da ecogenicidade renal é um dos achados mais comuns em cães e gatos com nefropatia. O objetivo deste estudo foi descrever a técnica de elastografia por irradiação da força de impulso acústico (ARFI) na avaliação dos rins de gatos adultos hígidos,

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Fernandez, Stephanie. "Elastografia Acoustic Radiation Force Impulse (ARFI) e Doppler na avaliação das glândulas adrenais de cães hígidos /." Jaboticabal, 2016. http://hdl.handle.net/11449/141982.

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Orientador: Marcus Antonio Rossi Feliciano<br>Coorientador: Wilter Ricardo Russiano Vicente<br>Coorientador: Sofia Borin Crivellenti<br>Banca: Eliandra Antônia Pires Buttler<br>Banca: Lenadro Zuccolotto Crivellenti<br>Resumo: As glândulas adrenais exercem papel fundamental na manutenção da homeostasia tanto em humanos, como nos animais, logo a avaliação ultrassonográfica dessas glândulas deve ser rotina, uma vez que pode auxiliar no diagnóstico de uma dada afecção, principalmente o hiperadrenocorticismo, doença relativamente comum principalmente nos cães, cujo diagnóstico baseia-se na avaliaçã

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Schulze-Zachau, Victor [Verfasser]. "Acoustic Radiation Force Impulse Elastographie : Nutzen bei metastasensuspekten Leberläsionen sowie Präsentation einer neuen Referenzmethode / Victor Schulze-Zachau." Ulm : Universität Ulm, 2018. http://d-nb.info/1162193557/34.

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Zangirolami, Michelle Avante. "Elastografia ARFI (acoustic radiation force impulse), doppler e ultrassonografia contrastada por microbolhas para avaliação do pâncreas canino /." Jaboticabal, 2019. http://hdl.handle.net/11449/181999.

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Orientador: Marcus Antonio Rossi Feliciano<br>Resumo: Atualmente, a ultrassonografia é o método de escolha para avaliação pancreática, sendo imprescindível como auxílio diagnóstico na detecção de anormalidades. Com a tecnologia inovadora dos equipamentos, surgiram técnicas complementares à ultrassonografia modo-B, que contribuem para o diagnóstico de alterações pancreáticas. O objetivo deste estudo foi avaliar se a elastografia, a ultrassonografia Doppler e contraste por microbolhas permitem identificar alterações pancreáticas de cães. Foram selecionados 25 cães, machos e fêmeas, com idade ent

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Berner, Christian [Verfasser], Mireen [Gutachter] Friedrich-Rust, and Frank [Gutachter] Grünwald. "Acoustic Radiation Force Impulse Imaging zur Differenzierung von Schilddrüsenknoten / Christian Berner ; Gutachter: Mireen Friedrich-Rust, Frank Grünwald." Frankfurt am Main : Universitätsbibliothek Johann Christian Senckenberg, 2021. http://d-nb.info/1228432503/34.

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Abreu, Thais Guimarães Morato. "Ultrassonografias Modo-A, Modo-B e elastografia 'acoustic radiation force impulse' do bulbo ocular de cães braquicefálicos /." Jaboticabal, 2017. http://hdl.handle.net/11449/150118.

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Orientador: José Luiz Laus<br>Coorientador: Marcus Antônio Rossi Feliciano<br>Banca: Ivan Ricardo Martinez Padua<br>Banca: Aline Adriana Bolzan<br>Resumo: Estudaram-se olhos de cães braquicefálicos por elastografia "acoustic radiation force impulse" (ARFI) estabelecendo-se padrões de referência qualiquantitativos relacionados com a rigidez de estruturas oculares. Compararam-se imagens obtidas à ultrassonografia ocular convencional com às geradas pelo método elastográfico ARFI. Quarenta e dois cães braquicefálicos (16 Shih Tzus, 11 Buldogues Ingleses, 11 Buldogues Franceses e 4 Pugs), adultos,

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Rönsch, Martin [Verfasser]. "Lebergewebecharakterisierung mittels Acoustic Radiation Force Impulse-Elastographie und Zone Speed Index im Kindes- und Jugendalter / Martin Rönsch." Halle, 2017. http://d-nb.info/1143595890/34.

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Yoshino, Kenji. "The efficiency of acoustic radiation force impulse imaging for the staging of graft fibrosis after liver transplantation." Kyoto University, 2019. http://hdl.handle.net/2433/242376.

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Simon, Annika Kristina [Verfasser], Hans-Joachim [Gutachter] Mentzel, Ulrike [Gutachter] John, and Joachim [Gutachter] Böttcher. "Acoustic Radiation Force Impulse Imaging der Niere / Annika Kristina Simon ; Gutachter: Hans-Joachim Mentzel, Ulrike John, Joachim Böttcher." Jena : Friedrich-Schiller-Universität Jena, 2018. http://d-nb.info/1177388200/34.

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Eiler, Jessika [Verfasser]. "Ultraschall Elastographie der Leber bei Kindern und Jugendlichen - Normwerterstellung für Acoustic Radiation Force Impulse (ARFI) Elastographie / Jessika Eiler." Gießen : Universitätsbibliothek, 2018. http://d-nb.info/1167682890/34.

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Stark, Juliane Hannah [Verfasser]. "Charakterisierung des Lebergewebes von Patienten mit zystischer Fibrose mithilfe von Acoustic Radiation Force Impulse (ARFI) / Juliane Hannah Stark." Gießen : Universitätsbibliothek, 2016. http://d-nb.info/1090784295/34.

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Silva, Priscila Del Aguila da. "Ultrassonografia modo b e elastografia Acoustic Radiation Force Impulse (ARFI) de tecidos materno fetais durante a gestação em ovinos /." Jaboticabal, 2017. http://hdl.handle.net/11449/150173.

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Orientador: Marcus Antonio Rossi Feliciano<br>Coorientador: Wilter Ricardo Russiano Vicente<br>Coorientador: Ricardo Andres Ramirez Uscategui<br>Banca: Felipe Farias Pereira da Câmara Barros<br>Banca: Eliandra Antonia Pires Buttler<br>Resumo: O objetivo deste estudo foi avaliar a rigidez de tecidos materno fetais em ovinos a partir da décima semana de gestação, por meio da elastografia ARFI (Acoustic Radiation Force Impulse), determinando padrões qualitativos e quantitativos, com o intuito de verificar a aplicabilidade da técnica elastográfica no estudo do desenvolvimento desses tecidos. Foram

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Ormachea, Quispe Juvenal. "Evaluation of shear wave speed measurements using crawling waves sonoelastography and single tracking location acoustic radiation force impulse imaging." Master's thesis, Pontificia Universidad Católica del Perú, 2015. http://tesis.pucp.edu.pe/repositorio/handle/123456789/6195.

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Many pathological conditions are closely related with an increase in tissue sti ness. For many years, experts performed manual palpation in order to measure elasticity changes, however, this method can only be applied on superficial areas of the human body and provides crude sti ness estimation. Elastography is a technique that attempts to characterize the elastic properties of tissue in order to provide additional and useful information for clinical diagnosis. For more than twenty years, di erent research groups have developed various elastography modalities with a strong interest for quantit

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Kunde, Jacqueline. "Klinischer Nutzen von Abdomensonographie und Leberelastographie zur Prädiktion und Diagnostik von Komplikationen bei allogener Stammzelltransplantation." Doctoral thesis, Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-196965.

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Die vorliegende medizinische Dissertation untersucht nicht-invasive bildgebende Verfahren wie die konventionelle Sonographie, die Acoustic radiation force impulse (ARFI)-Elastographie sowie die Transiente Elastographie (TE) zur Detektion von Komplikationen in der Frühphase nach allogener Stammzelltransplantation. Dem kurativen Therapieansatz der Stammzelltransplantation steht ein hohes Komplikationspotential gegenüber. Besonders hepatobiliär treten Graft-versus-host Erkrankungen (GvHD) sowie Gefäßkomplikationen (VOD) auf. Der bisherige diagnostische Goldstandard, die Leberbiopsie, ist als inva

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Bernardi, Nara Saraiva. "Estudo exploratório da elastografia 'Acoustic Radiation Force Impulse (ARFI)' sobre estruturas flexoras da porção distal dos membros torácicos de equinos /." Jaboticabal, 2017. http://hdl.handle.net/11449/150959.

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Orientador: José Corrêa de Lacerda Neto<br>Coorientador: Marcus Antonio Rossi Feliciano<br>Banca: Deborah Penteado Martins Dias<br>Banca: Raquel Mincarelli Albernaz<br>Banca: Paulo Aléscio Canola<br>Banca: Márcia Rita Fernandes Machado<br>Resumo: A elastografia ARFI é uma técnica de imagem por ultrassom capaz de avaliar qualitativa e quantitativamente a rigidez dos tecidos. Não existe até o momento aplicação dessa técnica aos tendões e ligamentos de equinos e sob este aspecto o trabalho é inédito. Objetivou-se avaliar a rigidez dos tendões flexores digitais superficial (TFDS) e profundo (TFDP)

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Boretzki, Simon [Verfasser]. "Acoustic Radiation Force Impulse Imaging der Niere: Generierung von Normwerten in der ShearWave Elastographie mittels Virtual Touch Tissue Quantification / Simon Boretzki." Ulm : Universität Ulm, 2017. http://d-nb.info/1122644868/34.

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Wakker, Jonas [Verfasser]. "Generierung von Normwerten für die Acoustic Radiation Force Impulse (ARFI) Shear-Wave-Elastographie an der Achillessehne, Fascia thoracolumbalis und Aponeurosis plantaris / Jonas Wakker." Ulm : Universität Ulm, 2018. http://d-nb.info/1151938440/34.

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Schuderer, Johanna [Verfasser], Rüdger [Akademischer Betreuer] Görtz, and Rüdiger [Gutachter] Görtz. "Acoustic radiation force impuls (ARFI)-Elastographie des Pankreas / Johanna Schuderer ; Gutachter: Rüdiger Görtz ; Betreuer: Rüdger Görtz." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2019. http://d-nb.info/1199110140/34.

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Neuschulz, Marie. "Nicht-invasive Evaluation der Lebermanifestation der Zystischen Fibrose (CFLD) bei Erwachsenen mit Acoustic Radiation Force Impulse (ARFI) - Imaging, Transienter Elastographie (TE) und verschiedenen Fibrosescores." Doctoral thesis, Universitätsbibliothek Leipzig, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-160226.

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In der vorliegenden medizinischen Promotionsschrift werden verschiedene nicht-invasive Untersuchungsverfahren bei erwachsenen Patienten mit Zystischer Fibrose (CF) zur Detektion einer Leberbeteiligung (CFLD) evaluiert. Das diagnostische Standard-verfahren bei vielen Hepatopathien, die Leberbiopsie, ist auf Grund der fokalen Manifestation der CFLD und der häufigen pulmonalen Begleiterkrankung bei CF nicht Bestandteil der Routinediagnostik. CF- Patienten werden daher im Rahmen der vorliegenden Studie mittels konventionellen Ultraschalls, Acoustic Radiation Force Impulse (ARFI) - Imagings, Transi

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Karlas, Thomas, Arne Dietrich, Veronica Peter, et al. "Evaluation of transient elastography, acoustic radiation force impulse imaging (ARFI), and enhanced liver function (ELF) score for detection of fibrosis in morbidly obese patients." Universitätsbibliothek Leipzig, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-189067.

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Background: Liver fibrosis induced by non-alcoholic fatty liver disease causes peri-interventional complications in morbidly obese patients. We determined the performance of transient elastography (TE), acoustic radiation force impulse (ARFI) imaging, and enhanced liver fibrosis (ELF) score for fibrosis detection in bariatric patients. Patients and Methods: 41 patients (median BMI 47 kg/m2) underwent 14-day low-energy diets to improve conditions prior to bariatric surgery (day 0). TE (M and XL probe), ARFI, and ELF score were performed on days -15 and -1 and compared with intraoperative liver

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Hübner, Janina [Verfasser], Tom [Akademischer Betreuer] Lindner, Volker [Akademischer Betreuer] Keim, Thomas [Gutachter] Berg, and Frank [Gutachter] Lehner. "Nicht-invasive Evaluation der chronischen Transplantatnephropathie mittels Acoustic Radiation Force Impulse (ARFI) - Elastographie / Janina Hübner ; Gutachter: Thomas Berg, Frank Lehner ; Tom Lindner, Volker Keim." Leipzig : Universitätsbibliothek Leipzig, 2016. http://d-nb.info/1240481373/34.

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Hempel, Maria. "Nicht-invasive Evaluation der hepatischen Manifestation bei Patienten mit Morbus Wilson mittels Transienter Elastographie, Acoustic Radiation Force Impulse (ARFI)-Elastographie und verschiedener laborbasierter Fibrose-Indices." Doctoral thesis, Universitätsbibliothek Leipzig, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-160102.

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Die vorliegende medizinische Dissertation beschäftigt sich mit der Evaluation nicht-invasiver Diagnostikverfahren zur Detektion einer Leberfibrose bei Patienten mit Morbus Wilson. Untersucht wurden die Transiente Elastographie (TE), die Acoustic Radiation Force Impulse (ARFI)-Elastographie sowie verschiedene laborbasierte Fibrose-Indices bezüglich der Anwendbarkeit und ihres diagnostischen Nutzens. Der Morbus Wilson ist eine seltene hereditäre Kupferspeicherkrankheit, die über Kupferakkumulation im Leberparenchym zur Ausbildung einer Zirrhose führen kann. Die Kenntnis des Leberfibrosegrades is

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Wüstefeld, Steffen Verfasser], Andreas [Akademischer Betreuer] [Stallmach, Michael [Akademischer Betreuer] Hocke, and Bernd [Akademischer Betreuer] Kronenberger. "Erfassung der Lebersteifigkeit mittels der "Acoustic Radiation Force Impulse" Bildgebung bei Patienten mit chronisch-entzündlichen Darmerkrankungen / Steffen Wüstefeld. Gutachter: Andreas Stallmach ; Michael Hocke ; Bernd Kronenberger." Jena : Thüringer Universitäts- und Landesbibliothek Jena, 2016. http://d-nb.info/1090877307/34.

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Weinitschke, Kristin [Verfasser], Rolf Peter [Akademischer Betreuer] Spielmann, Gerhard [Akademischer Betreuer] Alzen, and Hans-Joachim [Akademischer Betreuer] Mentzel. "Vergleichswerterstellung für die Acoustic-Radiation-Force-Impulse-Elastographie der Leber im Kinder- und Jugendalter / Kristin Weinitschke. Betreuer: Rolf Peter Spielmann ; Gerhard Alzen ; Hans-Joachim Mentzel." Halle, Saale : Universitäts- und Landesbibliothek Sachsen-Anhalt, 2015. http://d-nb.info/1078505047/34.

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Wüstefeld, Steffen [Verfasser], Andreas [Akademischer Betreuer] Stallmach, Michael [Akademischer Betreuer] Hocke, and Bernd [Akademischer Betreuer] Kronenberger. "Erfassung der Lebersteifigkeit mittels der "Acoustic Radiation Force Impulse" Bildgebung bei Patienten mit chronisch-entzündlichen Darmerkrankungen / Steffen Wüstefeld. Gutachter: Andreas Stallmach ; Michael Hocke ; Bernd Kronenberger." Jena : Thüringer Universitäts- und Landesbibliothek Jena, 2016. http://d-nb.info/1090877307/34.

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Gaßmann, Luise [Verfasser], Rüdiger [Akademischer Betreuer] Görtz, Rüdiger [Gutachter] Görtz, and Lukas [Gutachter] Pfeifer. "Scherwellenelastographie (Acoustic radiation force impulse) bei autoimmunen und cholestatischen Lebererkrankungen (AIH, PBC, PSC, Overlap-Syndrom) / Luise Gaßmann ; Gutachter: Rüdiger Görtz, Lukas Pfeifer ; Betreuer: Rüdiger Görtz." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2020. http://d-nb.info/1213979285/34.

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Klein, Bettina Sylvia [Verfasser], Konrad [Akademischer Betreuer] Stock, CHRISTIAN [Akademischer Betreuer] LERSCH, and Uwe [Akademischer Betreuer] Heemann. "Elastizitäts-Quantifizierung mittels Acoustic Radiation Force Impulse Elastographie: Werte in nephrologischen Normkollektiven und erste Erfahrungen bei Nierenerkrankungen / Bettina Sylvia Klein. Gutachter: Christian Lersch ; Uwe Heemann. Betreuer: Konrad Stock." München : Universitätsbibliothek der TU München, 2013. http://d-nb.info/1046939769/34.

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Neuschulz, Marie [Verfasser], Volker [Akademischer Betreuer] Keim, Thomas [Akademischer Betreuer] Karlas, Thomas [Gutachter] Kahn, and Jochen [Gutachter] Mainz. "Nicht-invasive Evaluation der Lebermanifestation der Zystischen Fibrose (CFLD) bei Erwachsenen mit Acoustic Radiation Force Impulse (ARFI) - Imaging, Transienter Elastographie (TE) und verschiedenen Fibrosescores / Marie Neuschulz ; Gutachter: Thomas Kahn, Jochen Mainz ; Volker Keim, Thomas Karlas." Leipzig : Universitätsbibliothek Leipzig, 2015. http://d-nb.info/1239423292/34.

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Hempel, Maria [Verfasser], Volker [Akademischer Betreuer] Keim, Thomas [Akademischer Betreuer] Karlas, Thomas [Gutachter] Kahn, and Dominik [Gutachter] Huster. "Nicht-invasive Evaluation der hepatischen Manifestation bei Patienten mit Morbus Wilson mittels Transienter Elastographie, Acoustic Radiation Force Impulse (ARFI)-Elastographie und verschiedener laborbasierter Fibrose-Indices / Maria Hempel ; Gutachter: Thomas Kahn, Dominik Huster ; Volker Keim, Thomas Karlas." Leipzig : Universitätsbibliothek Leipzig, 2015. http://d-nb.info/1239423225/34.

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Hoppe, Daniel [Verfasser], Martin-Walter [Gutachter] Welker, and Frank [Gutachter] Grünwald. "Nichtinvasive Evaluation von Fibroseregression und Rückbildung der portalen Hypertension mittels transienter Elastographie und Acoustic Radiation Force Impulse-Elastographie bei Patienten mit Hepatitis C Virus-assoziierter Leberzirrhose nach Interferon-freier, antiviraler Therapie / Daniel Hoppe ; Gutachter: Martin-Walter Welker, Frank Grünwald." Frankfurt am Main : Universitätsbibliothek Johann Christian Senckenberg, 2018. http://d-nb.info/1172500533/34.

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Frew, Samuel Mark. "Viscoelastic imaging methods using acoustic radiation force." Thesis, University of British Columbia, 2010. http://hdl.handle.net/2429/30398.

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Elastography is a method of imaging the viscoelastic properties of soft tissue and similar media. It can be used for identifying various forms of cancer and fibrosis in soft tissue. Elastography can thus aid in diagnosis of such diseases, and in treatment procedures, such a biopsy needle guidance. Acoustic radiation force (ARF) imaging is one form of elastography whereby the ARF of focused ultrasound displaces the medium at an internal, localised position. The same ultrasound system can be used to monitor the displacement, from which the viscoelastic properties can be recovered. This work pre

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Li, Sinan. "Laser speckle contrast detection of acoustic radiation force response." Thesis, Imperial College London, 2015. http://hdl.handle.net/10044/1/34931.

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Light and ultrasound are both non-ionizing radiations, ideal for biomedical applications. Recent studies on combining ultrasound and light for biomedical imaging show new promises in improving imaging quality and/or providing complementary imaging contrast. Among a variety of the imaging modalities that simultaneously use ultrasound and light, this work focuses on optical detection of tissue responses to acoustic radiation force (ARF). The applications include optical shear wave elastography and ultrasound modulated optical tomography. The first half of the thesis provides a systematic study o

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Li, Rui. "Ultrasound modulated optical tomography in optical diffuse medium using acoustic radiation force." Thesis, Imperial College London, 2011. http://hdl.handle.net/10044/1/6967.

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Ultrasound modulated optical tomography (UOT) is a hybrid technique which combines optical contrast with ultrasound (US) resolution to achieve deeper tissue imaging. However, the technique is currently limited due to the weak modulation signal strength and consequently a low Signal-to-Noise Ratio (SNR). One potential way to increase the SNR of UOT is to increase the ultrasound induced particle displacement, by either increasing the ultrasound amplitude or using the acoustic radiation force (ARF). In this thesis, I theoretically studied the relationship between the scatterers‘ displacements and

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Andrade, José Henrique Araújo Lopes de. "Acoustic radiation force and torque on suspended objects in an inviscid fluid." Universidade Federal de Alagoas, 2014. http://www.repositorio.ufal.br/handle/riufal/1694.

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Recent advances and interest in ultrasound particle manipulation calls for theoretical understanding of acoustic radiation force and torque exerted on a configuration of multiple particles. In this thesis we theoretically study the acoustic radiation force and torque exerted by an arbitrary acoustic beam on a cluster of spherical particles in an inviscid fluid. The method is based on the partial-wave expansion (PWE) and the translational addition theorem for spherical wave functions. The combination of (PWE) and addition theorem Method enable us to solve the associated multiple scattering pr

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Wanis, Sameh Sadarous. "Tailored Force Fields for Flexible Fabrication." Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/10540.

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The concept of tailored force fields is seen as an enabler for the construction of large scale space structures. Manufacturing would take place in space using in-situ resources thereby eliminating the size and weight restriction commonly placed on space vehicles and structures. This thesis serves as the first investigation of opening the way to a generalized fabrication technology by means of force fields. Such a technology would be non-contact, flexible, and automated. The idea is based on the principle that waves carry momentum and energy with no mass transport. Scattering and gradient f

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Dadakova, Tetiana [Verfasser]. "New MR Technologies for MR-guided Thermometry and Acoustic Radiation Force Imaging / Tetiana Dadakova." München : Verlag Dr. Hut, 2017. http://d-nb.info/1126297607/34.

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Saunders, Catherine. "Asymptotic methods applied to problems of steady-streaming flows and acoustic radiation forces." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/asymptotic-methods-applied-to-problems-of-steadystreaming-flows-and-acoustic-radiation-forces(7c4856bd-5d9d-44b5-bac7-d2aed745f258).html.

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Small-amplitude, high-frequency (ultrasound) forcing of fluid/particle systems is being used in a number of applications associated with non-destructive fluid mixing and the movement/manipulation of particles in suspension. Of most importance in this context are the second-order, steady, effects arising from the nonlinear interaction of a leading-order oscillatory field with itself. In this thesis we consider some of these steady effects in both incompressible and compressible fluids. We first consider the axisymmetric steady streaming generated in an incompressible, viscous fluid contained be

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Rösch, Lara [Verfasser], and Deike [Gutachter] Strobel. "Stellenwert der Leberelastometrie (Acoustic Radiaion Force Impulse) während antiviraler Tripeltherapie bei chronischer Hepatitis C / Lara Rösch ; Gutachter: Deike Strobel." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2017. http://d-nb.info/1133362451/34.

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Haydock, David. "Lattice Boltzmann simulations of acoustic streaming and the radiation force on objects in a sound field." Thesis, University of Oxford, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.403738.

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Neuwirt, Christine [Verfasser]. "Acoustic Radiation Force Imaging der Schilddrüse: Generierung von Normwerten mittels Virtual TouchTM Imaging and Quantification / Christine Neuwirt." Ulm : Universität Ulm, 2017. http://d-nb.info/1129258483/34.

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Mulvana, Helen. "The potential for parametric acoustic radiation force generation for elasticity estimation to aid in lower limb prosthesis fitting." Thesis, University of Strathclyde, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.501649.

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Tissue elasticity assessment is is used in clinical applications from cancer diagnosis to prosthesis fitting. Elastography, using ultrasound to image tissue elasticity to replace digital palpation, includes methods which measure small volume tissue response to high-frequency acoustic excitation and bulk responses following quasi-static loading. Such techniques are well explored and used clinically; however, the goal of quantitative elasticity estimation remains unfulfilled. Additionally, tissue's elastic nonlinearity prevents either approach from providing elasticity information relevant to lo

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Andrade, Marco Aurélio Brizzotti. "Estudo da força de radiação acústica em partículas produzida por ondas progressivas e estacionárias." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/3/3152/tde-11082010-164959/.

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O objetivo deste trabalho é estudar o fenômeno da força de radiação acústica produzida por ondas progressivas e estacionárias. Neste trabalho o estudo da força produzida por ondas estacionárias é aplicado na análise de um levitador acústico e o estudo da força de radiação acústica por ondas progressivas é feito visando a futura construção de um separador acústico. Neste trabalho é utilizado o método dos elementos finitos para simular o comportamento de um levitador acústico. Primeiramente, é feita a simulação de um levitador acústico que consiste de um transdutor de Langevin com uma face de e

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