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Dissertations / Theses on the topic 'Breast masses'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Khan, Fyzodeen. "Detection of masses in x-ray mammograms /." View online ; access limited to URI, 2003. http://0-wwwlib.umi.com.helin.uri.edu/dissertations/dlnow/3103706.

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2

Bovis, Keir Jonathan. "An adaptive knowledge-based model for detecting masses in screening mammograms." Thesis, University of Exeter, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.269735.

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von, Lavante Etienne. "Segmentation and sizing of breast cancer masses with ultrasound elasticity imaging." Thesis, University of Oxford, 2009. http://ora.ox.ac.uk/objects/uuid:81225f61-6b83-405b-aed5-17b316ed586a.

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Uncertainty in the sizing of breast cancer masses is a major issue in breast screening programs, as there is a tendency to severely underestimate the sizing of malignant masses, especially with ultrasound imaging as part of the standard triple assessment. Due to this issue about 20% of all surgically treated women have to undergo a second resection, therefore the aim of this thesis is to address this issue by developing novel image analysis methods. Ultrasound elasticity imaging has been proven to have a better ability to differentiate soft tissues compared to standard B-mode. Thus a novel seg

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Rojas, Dominguez Alfonso. "Automated detection, segmentation and classification of breast masses in digitised mammograms." Thesis, University of Liverpool, 2007. http://livrepository.liverpool.ac.uk/375/.

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A method for automatic detection of mammographic masses is presented. As part of this method, an enhancement algorithm is proposed that improves image contrast based on local statistical measures of the mammograms. After enhancement, regions are segmented via thresholding at multiple levels, and a set of features is computed from each of the segmented regions. A region-ranking system is also presented that identifies the regions most likely to represent abnormalities based on the features computed. The method was tested on 57 mammographic images of masses and achieved a sensitivity of 80% at 2

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5

Jirari, Mohammed. "Computer Aided System For Detecting Masses In Mammograms." Kent State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=kent1212099614.

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6

Tortajada, Giménez Meritxell. "Case-level detection of mammographic masses." Doctoral thesis, Universitat de Girona, 2017. http://hdl.handle.net/10803/620783.

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This thesis is focused on the automatic detection of masses in FFDM images by using case-level information which includes bilateral, temporal and/or ipsilateral information. As a first step, FFDM images are preprocessed to improve image quality. A novel enhancement method is applied to compensate the thickness reduction in peripheral edges of the breast. Following, B-Splines image registration with Affine initialisation is used to obtain bilateral and temporal information that is incorporated in the detection stage. Finally, CC/MLO correspondence approach based on using curved epipolar lines i

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Silva, Leandro Augusto da. "Classificação de nódulos mamográficos utilizando um comitê de redes neurais artificiais." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/3/3142/tde-05092006-203231/.

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Este trabalho apresenta uma nova estratégia computacional para classificar nódulos mamográficos, que podem ser identificados por radiologistas nos exames de mamografia, em benignos ou malignos. Para a realização dos experimentos computacionais, foram utilizados 57 regiões suspeitas de câncer (ROIs) encontrados pelo radiologista nos exames de mamografia. Das 57 ROIs, 37 foram identificadas como nódulos benignos e 20 identificadas como nódulos malignos, após o exame de biópsia. Com base nestas 57 ROIs são aplicadas técnicas de processamento de imagens para extrair determinadas características qu

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8

Barnabò, Andrea. "Machine learning techniques for mammography applications." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.

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During this work we will use machine learning and deep learning techniques in order to face up to some medical problems where they can play a basic role. In particular we will apply these algorithms to some mammography issues. The thesis presents three main experiments that are described below. The first one consists of a classification between nipples and non-nipples images. In this part of the work we will build a dataset composed by images belonging to these two classes. The main purpose here will be to build a classifier able to distinguish between nipple and non-nipple images. Several mac

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9

Cavdarli, Sumeyye. "Deciphering biosynthesis mechanisms of O-acetylated GD2 in breast cancer." Thesis, Lille 1, 2020. http://www.theses.fr/2020LIL1S100.

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Le ganglioside GD2, ré-exprimé dans les cancers d’origine neuro-ectodermique, a été caractérisé comme un antigène oncofetal constituant une cible pour l’immunothérapie. L’anticorps anti-GD2 dinutuximab (Unitixin, TM) a récemment obtenu l’agrément de la Food Drug Administration et de l’Agence Européenne du Médicament pour le traitement des neuroblastomes pédiatriques. Cependant, l’utilisation de cet anticorps se heurte à de forts problèmes de toxicité due à l’expression du GD2 dans les nerfs périphériques sains. La forme O-acétylée du GD2 (OAcGD2) n’est exprimé que dans les tissus cancéreux rep

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SILVA, Luis Claudio de Oliveira. "Método de detecção de massas em mamas densas usando análise de componentes independentes." Universidade Federal do Maranhão, 2017. http://tedebc.ufma.br:8080/jspui/handle/tede/1897.

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Submitted by Rosivalda Pereira (mrs.pereira@ufma.br) on 2017-09-04T18:08:18Z No. of bitstreams: 1 LuisClaudioSilva.pdf: 4393489 bytes, checksum: 5c3cb715bd7992ba1cc5380c1a940f32 (MD5)<br>Made available in DSpace on 2017-09-04T18:08:18Z (GMT). No. of bitstreams: 1 LuisClaudioSilva.pdf: 4393489 bytes, checksum: 5c3cb715bd7992ba1cc5380c1a940f32 (MD5) Previous issue date: 2017-07-27<br>Breast cancer is the second type of cancer that most a ects women in the world, losing only for non melanoma skin cancer. Breast density can hinder the location of masses, especially in early stages. In this w

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Franco, Fátima Cristina Silva. "Viabilidade tecnológica da incorporação de levedura excedentária de cerveja em massas panares." Master's thesis, ISA, 2014. http://hdl.handle.net/10400.5/7059.

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Mestrado em Engenharia Alimentar - Instituto Superior de Agronomia<br>The present work had as main objective the possibility of valorize spent brewer’s yeast in food through the incorporation of Saccharomyces pastorianus in wheat flour-based doughs. Spent brewer’s yeast presents a considerable nutritional value being generally used as animal feed. In assessing of produced dough behavior, at different stages, empirical and non-empirical methods were used. Initially, formulations were studied at different substitution levels between 5 and 20% of wheat flour using spray dried spent yeast. As

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Ericeira, Daniel Rodrigues. "DETECÇÃO DE REGIÕES SUSPEITAS E CLASSIFICAÇÃO DE MASSAS EM MAMOGRAFIAS DIGITAIS UTILIZANDO DESCRIÇÃO ESPACIAL COM FUNÇÃO VARIOGRAMA." Universidade Federal do Maranhão, 2011. http://tedebc.ufma.br:8080/jspui/handle/tede/461.

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Made available in DSpace on 2016-08-17T14:53:15Z (GMT). No. of bitstreams: 1 Daniel Rodrigues Ericeira.pdf: 2002346 bytes, checksum: df76ac081a5d0e5816a81b5699935561 (MD5) Previous issue date: 2011-03-17<br>Mammography is the exam of the breast, used as breast cancer prevention and also as a diagnostic method. This exam, which consists in an X-Ray of the breast, allows cancer detection. The purpose of this work is to use image processing techniques and computer vision to help specialists in detecting suspect regions and masses in digital mammographies. The first stage of the methodology co

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Juventin, Gérard Marc. "Le contact Jura-Bresse : étude stratigraphique et tectonique de la région d'Ambérieu (Jura méridional)." Lyon 1, 1985. http://www.theses.fr/1985LYO11683.

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Zambelli, Rafael Audino. "Desenvolvimento de massas congeladas de pães tipo forma contendo ingredientes funcionais." reponame:Repositório Institucional da UFC, 2014. http://www.repositorio.ufc.br/handle/riufc/14871.

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ZAMBELLI, R. A. Desenvolvimento de massas congeladas de pães tipo forma contendo ingredientes funcionais. 2014. 202 f. Dissertação (Mestrado em Ciência e Tecnologia de Alimentos) - Centro de Ciências Agrárias, Universidade Federal do Ceará, Fortaleza, 2014.<br>Submitted by Daniel Eduardo Alencar da Silva (dealencar.silva@gmail.com) on 2015-01-26T18:26:59Z No. of bitstreams: 1 2014_dis_razambelli.pdf: 6374950 bytes, checksum: 348c1b31cefbbeba9afa961b46d52a4d (MD5)<br>Approved for entry into archive by José Jairo Viana de Sousa(jairo@ufc.br) on 2016-01-21T17:45:09Z (GMT) No. of bitstreams: 1 20

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Viera, Mariela de Souza. "Determinação de POPs e agrotóxicos em leite materno empregando cromatografia a gás acoplada à espectrometria de massas com ionização química negativa (GC-NCI-MS)." Universidade Federal de Santa Maria, 2016. http://repositorio.ufsm.br/handle/1/4282.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>The Stockholm Convention was the first global attitude trying to preserve human health and the environment of the indiscriminate use of persistent organic pollutants (POPs), especially pesticides, which are characterized by being lipophilic and can bioaccumulate in fatty tissues including breast milk. However, POPs represent only a part of the chemicals with the potential for environmental pollution and human as new substances are constantly being developed and released into the environment. In this work, the sample preparation ste

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Silva, Luis Claudio de Oliveira. "IMPLEMENTAÇÃO DE UM SISTEMA DE TELEDIAGNÓSTICO PARA CLASSIFICAÇÃO DE MASSAS EM IMAGENS MAMOGRÁFICAS USANDO ANÁLISE DE COMPONENTES INDEPENDENTES." Universidade Federal do Maranhão, 2012. http://tedebc.ufma.br:8080/jspui/handle/tede/491.

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Made available in DSpace on 2016-08-17T14:53:22Z (GMT). No. of bitstreams: 1 dissertacao Luis Claudio.pdf: 2055680 bytes, checksum: 4e51c93fd4aa6edfad51ab54ad4044f6 (MD5) Previous issue date: 2012-07-24<br>This thesis proposes the modeling and implementation of a telediagnostic system for analysis and detection of lesions in mammographic images based on independent component analysis and support vector machine. The system analyzes images from digital mammography sent over the Internet and provides a diagnostic, indicating the presence of suspicious regions, which can be confirmed by a spec

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Sousa, Ulysses Santos. "CLASSIFICAÇÃO DE MASSAS NA MAMA A PARTIR DE IMAGENS MAMOGRÁFICAS USANDO ÍNDICE DE DIVERSIDADE DE SHANNON-WIENER." Universidade Federal do Maranhão, 2011. http://tedebc.ufma.br:8080/jspui/handle/tede/467.

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Made available in DSpace on 2016-08-17T14:53:17Z (GMT). No. of bitstreams: 1 Ulysses Santos Sousa.pdf: 1410915 bytes, checksum: 88235f7f4a3bc07a4da1b27c23dc71ca (MD5) Previous issue date: 2011-05-13<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Cancer is one of the biggest health problems worldwide, and the breast cancer is the one that causes more deaths among women. Also it is the second most frequent type in the world. The chances of survival for a patient with breast cancer increases the sooner this disease is discovered. Several Computer Aided Detection/Diagnosis S

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Marques, Fabiana Aparecida. "Abordagem bioanalítica para busca de biomarcadores tumorais em modelo animal." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/75/75135/tde-22052018-102429/.

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Atualmente, os estudos Ômicos, principalmente no campo da metabolômica, têm tido grandes avanços contribuindo para a descoberta de novos biomarcadores e consequentemente aumentando a eficiência do tratamento do câncer. A lipidômica é um novo ramo da metabolômica que visa o estudo abrangente dos lipídeos presentes em um determinado organismo dando ênfase ao metabolismo dos lipídeos e como estão relacionados à progressão da doença. A utilização da espectrometria de massas aliada a abordagens bionalíticas tem progredido rapidamente nos últimos anos, possibilitando a análise e compreensão de peque

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ROCHA, Simara Vieira da. "Diferenciação do padrão de malignidade e benignidade de massas em imagens de mamografias usando padrões locais binários, geoestatística e índice de diversidade." Universidade Federal do Maranhão, 2014. http://tedebc.ufma.br:8080/jspui/handle/tede/1822.

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Submitted by Rosivalda Pereira (mrs.pereira@ufma.br) on 2017-08-14T19:19:25Z No. of bitstreams: 1 SimaraRocha.pdf: 3984461 bytes, checksum: 04243e2b6ab9b63b0b73e436ebc9fc23 (MD5)<br>Made available in DSpace on 2017-08-14T19:19:25Z (GMT). No. of bitstreams: 1 SimaraRocha.pdf: 3984461 bytes, checksum: 04243e2b6ab9b63b0b73e436ebc9fc23 (MD5) Previous issue date: 2014-05-22<br>Breast cancer is the second most frequent type of cancer in the world, being more common among women, and representing 22% of the new cases every year. A precocious diagnosis improves the chances of a successful treatment.

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Carvalho, Juliano Daloia de. "Métodos para aproximação poligonal e o desenvolvimento de extratores de características de forma a partir da função tangencial." Universidade Federal de Uberlândia, 2008. https://repositorio.ufu.br/handle/123456789/12463.

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Whereas manually drawn contours could contain artifacts related to hand tremor, automatically detected contours could contain noise and inaccuracies due to limitations or errors in the procedures for the detection and segmentation of the related regions. To improve the further step of description, modeling procedures are desired to eliminate the artifacts in a given contour, while preserving the important and significant details present in the contour. In this work, are presented a couple of polygonal modeling methods, first a method applied direct on the original contour and other derived fro

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Zaoui, Maurice. "Influence fonctionnelle de l’IMC, de la densité mammaire et du statut ménopausique sur le dialogue entre adipocytes et cellules tumorales mammaires." Thesis, Sorbonne université, 2018. http://www.theses.fr/2018SORUS325.

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Le cancer du sein est le cancer le plus fréquent et le plus meurtrier chez la femme. L’indice de masse corporelle (IMC), l’imprégnation œstrogènique et la densité mammaire (DM), facteurs connus pour influencer l’adiposité mammaire représentent également des facteurs de risque. Notre objectif est d’étudier l’influence de l’adiposité dans les mécanismes d’initiation et de progression tumorale mammaire. Nous avons comparé les effets des sécrétions des adipocytes différenciés à partir d’ASCs mammaires normaux ou isolés à partir de tissu adipeux mammaires adjacent à la tumeur. Les deux types de mil

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Gruel, Nadège. "Etude des altérations de la polarité et de l’adhésion cellulaire dans les cancers du sein." Thesis, Paris 11, 2013. http://www.theses.fr/2013PA11T033/document.

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La polarité apico-basale des cellules épithéliales est maintenue au niveau cellulaire par l’implication de plusieurs complexes protéiques, PAR, SCRIBBLE et CRUMBS, et par l’intégrité des jonctions serrées et adhérentes. La polarité apico-basale est essentielle au bon déroulement des processus de division, d’apoptose et de migration cellulaire, et de nombreuses études montrent que les perturbations de la polarité interviennent dans la progression tumorale. Notre travail a porté sur la recherche d’anomalies biologiques modifiant la polarité apico basale et l’adhésion cellulaire dans les carcinom

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Ferreira, Pablo Gomes. "Atividade de extratos de soja enriquecidos em isoflavonas agliconas na síntese e degradação de óxido nítrico e no controle da proliferação de células de carcinoma de mama in vitro." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/314342.

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Orientador: Ione Salgado<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Biologia<br>Made available in DSpace on 2018-08-16T09:04:27Z (GMT). No. of bitstreams: 1 Ferreira_PabloGomes_D.pdf: 2361486 bytes, checksum: bf9d8999e1dba8973f99ba609fa1a033 (MD5) Previous issue date: 2010<br>Resumo: Embora as isoflavonas de soja naturalmente se acumulem nas formas glico- emalonil-conjugadas, os efeitos benéficos dos alimentos a base de soja para a saúde humana tem sido creditados às formas agliconas. O presente trabalho teve como objetivo desenvolver uma metodologia para produção

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Gocko, Xavier Pierre Antoine. "Dépistage organisé du cancer du sein et décision partagée." Thesis, Lyon, 2020. http://www.theses.fr/2020LYSES005.

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Contexte. Participer au dépistage organisé du cancer du sein s’inscrit dans un processus de décision partagée avec une information délivrée claire loyale et appropriée. Ce processus repose sur les connaissances, les représentations et les valeurs des femmes et des professionnels. Les controverses autour de ce dépistage compliquent la décision des femmes. Dans ce contexte l’Institut national du cancer (INCa) a organisé la première concertation citoyenne sur ce dépistage en octobre 2015. Objectifs. Ce travail a cherché à nourrir le processus de décision partagée dans le cadre du dépistage en étu

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Steele, Aaron. "Ontological lockdown assessment : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science in Information Technology at Massey University, Palmerston North, New Zealand." Massey University, 2008. http://hdl.handle.net/10179/946.

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In order to keep shared access computers secure and stable system administrators resort to locking down the computing environment in order to prevent intentional and unintentional damage by users. Skilled attackers are often able to break out of locked down computing environments and intentionally misuse shared access computers. This misuse has resulted in cases of mass identity theft and fraud, some of which have had an estimated cost ranging in millions. In order to determine if it is possible to break out of locked down computing environments an assessment method is required. Although a num

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Silveira, Gabriela de Oliveira. "Avaliação da exposição de crianças a substâncias psicoativas durante a lactação através da análise toxicológica em leite materno." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/9/9141/tde-12082016-091919/.

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O aleitamento materno está associado a benefícios de ordem nutricional, imunológica, afetiva, econômica e social. Grande parte das drogas lícitas e ilícitas consumidas pela lactante pode ser transferida para o leite, o que pode representar potenciais efeitos nocivos para a criança em curto e longo prazos. Embora o conhecimento a respeito de substâncias psicoativas durante a lactação venha sendo ampliado, ainda há poucas informações sobre as concentrações de substâncias excretadas por essa via e muitas dúvidas sobre os efeitos delas em crianças durante o período de amamentação. O leite materno

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Mais, Anton. "Utilization of sweet potato starch, flour and fibre in bread and biscuits : physico-chemical and nutritional characteristics : a thesis submitted in partial fulfilment of the requirements for the degree of Master of Technology in Food Technology, Massey University." Massey University, 2008. http://hdl.handle.net/10179/921.

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Sweet-potato contains a limited amount of protein, although rich in dietary fibre content and carbohydrate, so a successful combination with wheat flour for bread and biscuit production would be nutritionally advantageous. In particular, the role of these ingredients in relating to acceptability of breads and biscuit with higher percentage of sweet potato starch, flour in wheat flour. In this study, starch, flour and residue fibre of three sweet-potato varieties (red, orange and white -types) were studied. The 5 -10% combination levels for biscuit-making were found to be acceptable, without af

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Lagache, Laurine. "Visualizing the molecular interaction networklevel heterogeneity of malignant tumors by mass spectrometry imaging." Electronic Thesis or Diss., Université de Lille (2022-....), 2024. https://pepite-depot.univ-lille.fr/ToutIDP/EDBSL/2024/2024ULILS111.pdf.

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Le cancer est la deuxième cause de décès dans le monde, avec 10 millions de morts et 19 millions de nouveaux cas en 2020. Le cancer du sein, le plus fréquent chez les femmes, comptait 2,26 millions de cas et près de 685 000 décès cette même année, soulignant l'urgence de recherches ciblées. Le diagnostic repose souvent sur des biopsies analysées histopathologiquement pour identifier les caractéristiques moléculaires des cellules cancéreuses. En fonction de l'expression de certains biomarqueurs (récepteurs hormonaux, oncoprotéines, récepteurs de facteurs de croissance), les sous-types de cancer

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Berthelot, Vivien. "Biochimie analytique de complexes de réparation de l'ADN : élaboration d'un système analytique intégré." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112386/document.

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Dans les cellules eucaryotes, les cassures double-brin sont réparée selon deux voies principales : la recombinaison homologue et la jonction des extrémités non homologues, toutes deux bien connues dans la littérature. Cependant quelques zones d'ombres persistent quant à deux aspects singuliers de leur mise en œuvre :- Si ces deux mécanismes peuvent opérer dans les cellules, quels sont les déterminismes qui président au choix d'une voie de réparation plutôt que de l'autre ?- Dans le cas où les cassures double-brin sont induites dans l'ADN par des rayonnements ionisants – comme ceux employés en

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Carsin, Jean-Louis. "Contribution aux etudes de pollution marine. Eutrophisation des eaux de clipperton et de la rade de brest. Marees noires apres les naufrages de l'amoco cadiz, du tanio et du gino. Discussions generales, aspects juridiques et reglementaires pour la protection du milieu marin." Paris 6, 1987. http://www.theses.fr/1987PA066298.

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Houard, Jonathan. "Effet de champ sous éclairement ultra-bref "Application à la sonde atomique"." Phd thesis, Université de Rouen, 2010. http://tel.archives-ouvertes.fr/tel-00607299.

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De nombreuses techniques d'étude ou de structuration des matériaux sont basées sur l'interaction entre la lumière et une pointe dont l'extrémité est sub-longueur d'onde (pointe nanométrique). La sonde atomique tomographique (La-APT) est une de ces techniques. Un laser à impulsions femtosecondes (1015s), focalisé sur un échantillon mis sous la forme d'une pointe nanométrique, déclenche l'évaporation par effet de champ des atomes situés à la surface de l'extrémité de la pointe. Cette technique, mise au point récemment, permet l'analyse tomographique à l'échelle nanométrique de matériaux aussi bi

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Carrier, Marilyn. "Dérégulation du phosphoprotéome dans les cancers : conséquences sur l'activité transcriptionnelle et la dégradation des récepteurs de l'acide rétinoïque (RAR)." Thesis, Strasbourg, 2015. http://www.theses.fr/2015STRAJ012/document.

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L’acide rétinoïque (AR) agit via des récepteurs nucléaires (RAR) qui sont des facteurs de transcription inductibles par le ligand. Il active aussi des cascades de kinases qui ciblent les RAR et modulent leur activité transcriptionnelle. Cependant, l’ensemble des protéines phosphorylées en réponse à l’AR de même que les conséquences des dérégulations du « kinome » sur les effets l’AR et le fonctionnement des RAR demeurent mal connus. J’ai comparé les effets de l’AR sur le phosphoprotéome de deux lignées de cellules de cancer du sein : MCF7, qui est sensible à l’AR, et BT474, qui surexprime le r

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Houard, Jonathan. "Effet de champ sous éclairement ultra-bref. Application à la sonde atomique." Phd thesis, Rouen, 2010. http://www.theses.fr/2010ROUES031.

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De nombreuses techniques d'étude ou de structuration des matériaux sont basées sur l'interaction entre la lumière et une pointe dont l'extrémité est sub-longueur d'onde (pointe nanométrique). La sonde atomique tomographique (La-APT) est une de ces techniques. Un laser à impulsions femtosecondes (10-15 seconde), focalisé sur un échantillon mis sous la forme d'une pointe nanométrique, déclenche l'évaporation par effet de champ des atomes situés à la surface de l'extrémité de la pointe. Cependant, la nature exacte du phénomène était méconnue. Les expériences réalisées au sein d'une sonde atomique

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Regard, Vincent. "Variations temporelle et spatiale de la transition subduction-collision : tectonique de la transition Zagros-Makran (Iran) et modélisation analogique." Phd thesis, Aix-Marseille 3, 2003. http://tel.archives-ouvertes.fr/tel-00003777.

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Les transitions spatiale et temporelle de la subduction à la collision sont des charnières géodynamiques. Nous précisons dans ce travail le rôle et le devenir de ces zones grâce à des modèles analogiques et l'étude tectonique d'un cas réel. La modélisation a montré qu'une transition temporelle entre subduction et collision est toujours marquée par une phase de subduction continentale. La durée de cette phase dépend de la façon dont se déforme la lithosphère subductée en profondeur. Plus elle se déforme, plus courte est la subduction continentale. Dans le cas d'une transition latérale entre sub

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Yang, Sheng-Chih, and 楊勝智. "Computer-Aided System for Diagnosis of Masses in Breast Medical Images." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/02825080601909681691.

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博士<br>國立成功大學<br>電機工程學系碩博士班<br>94<br>Abstract 　Breast masses generally present as the major symptom of breast cancer. In order to assist radiologists in detecting masses in the early stage of breast cancer, it is highly desirable to develop a reliable computer aided diagnostic system as an assistant. This dissertation presents a computer-aided diagnostic system for mass screening, classification and localization, which performs mass screening in both of mammograms and the breast magnetic resonance imaging (MRI) followed by the classification and localization on those detected masses. Entire pro

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Liao, Yin-Yin, and 廖尹吟. "Combine Nakagami parameter and edge feature to classify breast masses by ultrasound." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/67020346254745412204.

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碩士<br>國立清華大學<br>生醫工程與環境科學系<br>97<br>Breast cancer is the most common cancer in women worldwide. According to the lately statistics in Taiwan, the mortality from breast cancer has become the fourth of cancerous diseases among women. In addition, younger women tend to have dense breasts and Asian women tend to have denser ones. Not only ultrasound is capable of detecting masses even in dense breasts, but also more convenient, safer, and forming the images in real-time tool for patient in regularly physical examination. Computer-aided diagnosis (CAD) has been used to discriminate between benign a

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"Computer Aided Detection of Masses in Breast Tomosynthesis Imaging Using Information Theory Principles." Diss., 2008. http://hdl.handle.net/10161/917.

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Singh, Swatee. "Computer Aided Detection of Masses in Breast Tomosynthesis Imaging Using Information Theory Principles." Diss., 2008. http://hdl.handle.net/10161/917.

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<p>Breast cancer screening is currently performed by mammography, which is limited by overlying anatomy and dense breast tissue. Computer aided detection (CADe) systems can serve as a double reader to improve radiologist performance. Tomosynthesis is a limited-angle cone-beam x-ray imaging modality that is currently being investigated to overcome mammography's limitations. CADe systems will play a crucial role to enhance workflow and performance for breast tomosynthesis.</p><p>The purpose of this work was to develop unique CADe algorithms for breast tomosynthesis reconstructed volumes. Unlike

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Hsieh, Chia-Ying, and 謝佳穎. "Impact of manual operations of Ultrasound Elastography on differentiating between benign and malignant breast masses." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/6z5e2e.

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碩士<br>高雄醫學大學<br>醫學影像暨放射科學系碩士班<br>103<br>The breast ultrasound gray-scale image is evaluated according to the shape, margin, echo pattern, posterior acoustic features and calcification of the lesion, so as to distinguish whether the lesion is benign or malignant. Its sensitivity of detecting breast tumor is high, but the specificity is much lower, which causes the patients to have many unnecessary biopsies. As the benign or malignant breast lesion is highly correlated with the hardness of the tissues, the breast elastography has emerged in recent years to assist in improving the specificity of

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Yang, Wei-Jyun, and 楊韙駿. "A CAD System for Breast Masses Detection in Mammograms Using Wavelet Analysis and Texture Features." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/29747162645775815732.

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碩士<br>國立中正大學<br>電機工程所<br>98<br>The mortality rate of breast cancer has surpassed that of carcinoma of cervix in recent years. Now a days, mammogram is the most effective tumor detection method. Detection of tumor by using mammogram is effective and is capable of discovering tumors 1.7 years earlier then self-examination method. Therefore periodical inspection can facilitate, the discovery and treatment of the tumors in their early stage and thus, may prevent the cancer cell to proliferate and decrease the mortality rate. The purpose of this study is to develop a computer-aided design (CAD) sys

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Chen, Hong-Ting, and 陳泓庭. "Characterization of Benign and Malignant Solid Breast Masses Using Vascular Morphology in 3D Power Doppler Ultrasound Images." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/88559894157270666937.

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碩士<br>東海大學<br>資訊工程學系<br>98<br>Angiogenesis is a popular issue and indicator in the assessment of tumor’s growth and metastasis. Three-dimensional (3-D) power Doppler ultrasound images could characterize benign and malignant breast masses. Therefore, this study extracts the features vascularization from 3-D ultrasound images and selects seven morphological features to diagnose benign and malignant breast tumors by using support vector machine (SVM). These features are trained by the Az value under the receiver operating characteristic (ROC) curve to distinguish the more important features from

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Chuang, Hsien-Chang, and 莊憲章. "Using Tumor Morphology to Classify Benign and Malignant Solid Breast Masses: Speckle Reduction Imaging (SRI) versus Non-SRI Ultrasound Imaging." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/72526718721215787575.

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碩士<br>東海大學<br>資訊工程與科學系<br>97<br>Nowadays, there are many clinical diagnostic techniques for breast cancer, ultrasound is the most acceptable methods of diagnosis. Patients without worrying about the effects of radiation, inspection costs are also lower, and without pre-preparation work. From physician’s viewpoint, with progress of ultrasound technology, ultrasound equipment has developed high-resolution diagnostic tools. This technique may obtain more precise visualization of breast tumor and help physicians to make diagnostic decisions. However, the cost of US machine with the speckle reducti

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Koehn, Henning. "Differentially regulated proteins in breast cancer chemotherapy : a thesis presented to Massey University in partial fulfilment of the requirement for the degree of Doctor of Philosophy in Biochemistry." 2005. http://hdl.handle.net/10179/1554.

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Intrinsic or acquired drug resistance of tumours is a major problem for successful therapy of breast cancer patients. The efficacy of doxorubicin, one of the most important and commonly used drugs in chemotherapy, can be severely compromised by a variety of unspecific mechanisms rendering tumours drug resistant. Little is known however, about the specific events taking place in response to doxorubicin treatment, which may repair doxorubicin-induced damage, leading to drug resistance. Doxorubicin is a topoisomerase II poison, which interferes with topoisomerase II enzymes during DNA replication

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Plouffe, Laurence. "Évaluation de l’association entre l’exposition postnatale aux p,p’-DDT et p,p’-DDE et l’indice de masse corporelle chez les enfants japonais." Thesis, 2018. http://hdl.handle.net/1866/23975.

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Les enfants sont exposés au p,p’-dichlorodiphényltrichloroéthane (p,p’-DDT) et au p,p’-dichlorodiphényldichloroéthylène (p,p’-DDE) par transfert placentaire et par le lait maternel. Plusieurs études laissent croire que cette exposition pourrait avoir un impact sur l’indice de masse corporelle (IMC) pendant l’enfance. Le but de notre étude était d’évaluer l’association entre l’exposition par le lait maternel et l’IMC des enfants japonais âgés de 42 mois. Nous avons utilisé les données d’une étude pilote (n=290) de la Japan Environment and Children Study (JECS). Le p,p’-DDT et le p,p’-DDE ont ét

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East, Andrew Richard. "The influence of breaks in optimal storage conditions on "Cripps Pink" apple physiology and quality : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Food Technology at Massey University, Palmerston North, New Zealand." 2006. http://hdl.handle.net/10179/727.

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Apples stored onshore in Australia and New Zealand, are maintained at optimal storage conditions with the aid of low temperatures; controlled atmospheres (CA) and new technologies that retard the production or effect of ethylene (AVG and 1-MCP respectively). These technologies allow distribution of the highest quality apples to local and export markets on a year round basis. However, during distribution, maintenance of optimal storage conditions may be lost due to refrigeration system breakdown, operational constraints or management decisions. This thesis quantifies the influence of commercial

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Ang, Ee Kheng. "Career break or broken career? : mothers' experiences of returning to paid work : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy at School of Sociology, Social Policy and Social Work, Massey University, Palmerston North, New Zealand." 2007. http://hdl.handle.net/10179/1671.

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Servicemen returning from two World Wars were granted assistance in finding work, retraining and other benefits in recognition of the sacrifices they had made. Yet mothers' returning to work after time out bearing and raising children are reliant on a booming economy to obtain even limited entry to the labour market, and the work obtained is very often inferior to the jobs held by women before becoming mothers. Currently due to lower fertility rates and the ageing populations of the world's richer nations, a shortage of working-age people is predicted to continue into at least the middle of th

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