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Dissertations / Theses on the topic 'Mammogram'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Carlsson, Hampus. "Fully Convolutional Networks for Mammogram Segmentation." Thesis, Linköpings universitet, Statistik och maskininlärning, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-158127.

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Segmentation of mammograms pertains to assigning a meaningful label to each pixel found in the image. The segmented mammogram facilitates both the function of Computer Aided Diagnosis Systems and the development of tools used by radiologists during examination. Over the years many approaches to this problem have been presented. A surge in the popularity of new methods to image processing involving deep neural networks present new possibilities in this domain, and this thesis evaluates mammogram segmentation as an application of a specialized neural network architecture, U-net. Results are prod

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2

Riley, Graeme Alexander. "Optimised mammogram displays for improved breast cancer detection." Thesis, University of Plymouth, 2016. http://hdl.handle.net/10026.1/5150.

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In current mammography practice, radiologists typically view mammograms in a symmetric, side-by-side, configuration in the belief that abnormalities will be made salient because they break the perceived symmetry. The literature on the use of symmetry as an aid to signal detection is limited and this thesis has taken a psychophysical approach to investigate the radiologist’s task of detecting a small mass (a blob) in paired mammogram backgrounds. Initial experiments used Gaussian white noise and synthetic mammogram backgrounds to test observer performance for the radiologist’s task using symmet

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3

Stewart, Brian D. "Automatic mammogram interpretation using knowledge-based computer vision." Thesis, University of Dundee, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333875.

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4

Copeland, Valerie Anne. "Factors that influence follow-up after an abnormal mammogram." [College Station, Tex. : Texas A&M University, 2006. http://hdl.handle.net/1969.1/ETD-TAMU-1130.

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5

Kok-Wiles, Siewli. "Comparing mammogram pairs in the detection of mammographic lesions." Thesis, University of Oxford, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298421.

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6

Majeed, Taban Fouad. "Segmentation, super-resolution and fusion for digital mammogram classification." Thesis, University of Buckingham, 2016. http://bear.buckingham.ac.uk/162/.

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Mammography is one of the most common and effective techniques used by radiologists for the early detection of breast cancer. Recently, computer-aided detection/diagnosis (CAD) has become a major research topic in medical imaging and has been widely applied in clinical situations. According to statics, early detection of cancer can reduce the mortality rates by 30% to 70%, therefore detection and diagnosis in the early stage are very important. CAD systems are designed primarily to assist radiologists in detecting and classifying abnormalities in medical scan images, but the main challenges hi

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7

Alshabibi, Abdulaziz Saad Abdullah. "Factors Causing Variability When Reading Mammograms." Thesis, The University of Sydney, 2022. https://hdl.handle.net/2123/29415.

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Aims: This thesis investigated the impacts on radiologist performance of 1) the time of day at which an image is read, 2) how long a radiologist has been awake and the hours slept the night before and 3) the number of cases read without a break. Studies 2 and 3 also examined whether the influence of the studied factors varied according to reader experience. Methods: Data were collected during conference workshops, and radiologist accuracy was evaluated with BreastScreen Reader Assessment Strategy test sets, each containing 60 digital mammography cases. In study 1, 197 reader assessments wer

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8

Azevedo, Roger. "Expert problem solving in mammogram interpretation, a visual cognitive task." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0002/NQ44353.pdf.

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9

McLoughlin, Kirstin J. "Computer aided detection of microcalcification clusters in digital mammogram images." Thesis, University of Canterbury. Electrical and Computer Engineering, 2004. http://hdl.handle.net/10092/6536.

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Recent advancements in computer technology have ensured that early detection of breast cancer, via computer aided detection (CAD) schemes, has become a rapidly expanding field of research. There is a desire to improve the detection accuracy of breast cancer without increasing the number of falsely identified cancers. The CAD scheme considered here is intended to assist radiologists in the detection of micro calcification clusters, providing a real contribution to the mammography screening process. Factors that affect the detection accuracy of micro calcifications in digital mammograms include

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10

Kulkarni, Pradnya. "Pixel N-grams for Mammographic Image Classification." Thesis, Federation University Australia, 2017. http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/160424.

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X-ray screening for breast cancer is an important public health initiative in the management of a leading cause of death for women. However, screening is expensive if mammograms are required to be manually assessed by radiologists. Moreover, manual screening is subject to perception and interpretation errors. Computer aided detection/diagnosis (CAD) systems can help radiologists as computer algorithms are good at performing image analysis consistently and repetitively. However, image features that enhance CAD classification accuracies are necessary for CAD systems to be deployed. Many CAD syst

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11

Al-Hinnawi, Abdel-Razzak. "Computer aided detection of clustered micro-calcifications in the digitised mammogram." Thesis, University of Aberdeen, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301076.

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The presence of distributed micro-calcifications can be an indicator of early breast cancer. On the mammogram, they appear as bright smooth particles superimposed on the normal breast image background. Radiologists determine the occurrence of this lesion by detecting the individual micro-calcifications and then examining their distribution within the breast tissue. Due to the visual complexity of the mammogram, the detection sensitivity is usually less than 100%. The digital environment has the potential to increase the radiologist's accuracy. We have developed a computer aided detection (CAD)

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12

Larmond-Hyman, Lorretta. "Health Seeking Behavior in African American Women." ScholarWorks, 2018. https://scholarworks.waldenu.edu/dissertations/6056.

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Disparities exist in the health-seeking behavior of African American (AA) women in the United States. Specifically, AA women 40 years and older often do not adhere to guidelines for breast cancer screening because of demographic and socioeconomic factors that have impacted health disparities. The purpose of this study was to research negative health-seeking behavior toward early-stage breast cancer detection in AA women 40 years and older. The main research questions addressed whether there is a relationship between negative health-seeking behavior, operationally defined as lack of a personal

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13

McNeill, Kathryn Bond. "Communication cues to action prompting central Appalachian women to have a mammogram." [Johnson City, Tenn. : East Tennessee State University], 2004. http://etd-submit.etsu.edu/etd/theses/available/etd-0430104-084147/unrestricted/McNeill061704f.pdf.

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Thesis (M.A.)--East Tennessee State University, 2004.<br>Title from electronic submission form. ETSU ETD database URN: etd-0430104-084147 Includes bibliographical references. Also available via Internet at the UMI web site.

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14

George, Marshalee. "Experiences of Older African American Women With Breast Cancer Screening and Abnormal Mammogram Results." ScholarWorks, 2011. https://scholarworks.waldenu.edu/dissertations/966.

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Even with access to well-known breast cancer treatment centers, older African American women continue to have higher breast cancer mortality compared to their European American counterparts. Researchers have theorized relationships among diagnostic delay, socioeconomic status (SES) factors, beliefs, culture, and breast cancer mortality in African American women ages 40 to 64, but these same relationships among African American women ages 65 to 80 have not been investigated. The purpose of this qualitative study was to describe older African American women's experiences with abnormal mammograms

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15

Alnass, Fatimah A. "ASSOCIATIONS BETWEEN PREDISPOSING, ENABLING AND NEED FACTORS ON INTENTION FOR MAMMOGRAM SCREENING AMONG SAUDI WOMEN." Case Western Reserve University School of Graduate Studies / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=case1616183751282223.

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16

Rystedt, Beata. "Breast Cancer Risk Localization in Mammography Images using Deep Learning." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-279577.

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Breast cancer is the most common form of cancer among women, with around 9000 new diagnoses in Sweden yearly. Detecting and localizing risk of breast cancer could give the opportunity for individualized examination programs and preventative measures if necessary, and potentially be lifesaving. In this study, two deep learning methods have been designed, trained and evaluated on mammograms from healthy patients whom were later diagnosed with breast cancer, to examine how well deep learning models can localize suspicious areas in mammograms. The first proposed model is a ResNet-18 regression mod

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17

Ding, J. J. "Case control study on the effectiveness of using standard mammogram form to predict breast cancer risk." Thesis, University of Cambridge, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.598545.

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The aim of my project was to associate breast density with cancer risk by comparing SMF to the conventional density measurement methods. This case control study comprised cancers with age-matched controls from the Cambridge and Norwich Breast Screening Programmes. Data collection involved assessing the films based on Wolfe’s patterns, SCC and 21-categorisation classification, and then digitising the films for computer analyses (Cumulus and SMF). Conditional logistic regression was used to produce odds ratios associated with mammographic density. Results from a pilot study of 220 cancers and 22

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18

Song, Hae Jin S. M. Massachusetts Institute of Technology. "Non-rigid registration of mammogram images using large displacement optical flow with extended flexibility for manual interventions." Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/119572.

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Thesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2018.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 43-44).<br>This thesis presents a registration method for mammogram images with extended flexibility for manual inputs from medical specialists. The algorithm was developed as part of the Mammography project led by Professor

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19

Shon, En-Jung Shon. "Psychosocial Predictors of Never Having a Mammogram Among Chinese, Vietnamese, and Korean Immigrant Women in the U.S." Case Western Reserve University School of Graduate Studies / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=case1528399335116383.

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20

Utin, Enobong Clement. "Breast Cancer Screening Knowledge and Beliefs of Nigerian Women Living in the United States." ScholarWorks, 2019. https://scholarworks.waldenu.edu/dissertations/7515.

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Breast cancer is one of the leading causes of death and disability globally. Although mammogram has been identified as a significant breast screening tool in the United States, researchers have indicated that African-born women in the United States are diagnosed with advanced stages of breast cancer because of underutilization of mammogram from diverse reasons. The purpose of this quantitative study was to determine the association of demographic factors, breast cancer knowledge, health beliefs, and the utilization of mammogram among Nigerian women, 40 years and older in the United States (N=2

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21

Qiu, Yan. "Three dimensional finite element model for lesion correspondence in breast imaging." [Tampa, Fla.] : University of South Florida, 2003. http://purl.fcla.edu/fcla/etd/SFE0000192.

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22

Masek, Martin. "Hierarchical segmentation of mammograms based on pixel intensity." University of Western Australia. School of Electrical, Electronic and Computer Engineering, 2004. http://theses.library.uwa.edu.au/adt-WU2003.0033.

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Mammography is currently used to screen women in targeted risk classes for breast cancer. Computer assisted diagnosis of mammograms attempts to lower the workload on radiologists by either automating some of their tasks or acting as a second reader. The task of mammogram segmentation based on pixel intensity is addressed in this thesis. The mammographic process leads to images where intensity in the image is related to the composition of tissue in the breast; it is therefore possible to segment a mammogram into several regions using a combination of global thresholds, local thresholds and high

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23

Qiu, Yan 1973. "Three dimensional finite element model for lesion correspondence in breast imaging [electronic resource] / by Yan Qiu." University of South Florida, 2003. http://purl.fcla.edu/fcla/etd/SFE0000192.

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Title from PDF of title page.<br>Document formatted into pages; contains 64 pages.<br>Thesis (M.S.C.S.)--University of South Florida, 2003.<br>Includes bibliographical references.<br>Text (Electronic thesis) in PDF format.<br>ABSTRACT: Predicting breast tissue deformation is of great significance in several medical applications such as surgery, biopsy and imaging. In breast surgery, surgeons are often concerned with a specific portion of the breast, e.g., tumor, which must be located accurately beforehand. Also clinically it is important for combining the information provided by images from se

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24

Carrass-Milling, Anders, and Camilla Johansson. "Artificiell intelligens inom mammografiscreening : En litteraturstudie." Thesis, Jönköping University, Hälsohögskolan, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-49092.

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Den senaste utvecklingen av artificiell intelligens (AI) och djupinlärning (DL) har gjort bild- och funktionsmedicin till en högst trolig kandidat att tidigt anta tekniken. AI inom mammografiscreening syftar till hälsofrämjande effekter genom en förhoppning om säkrare bilddiagnostik. Röntgensjuksköterskans (RSS) arbete präglas av korrekt utförd bildtagning och ett aktivt aktualiserande av den egna yrkesrollen gällande såväl tekniska framsteg som förnyade arbetssätt. Litteraturstudien har upprättats i syfte att belysa potentiella effekter av AI på bilddiagnostik inom mammografiscreening. Genom

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25

Assi, Valentina. "Clinical and epidemiological issues and applications of mammographic density." Thesis, Queen Mary, University of London, 2014. http://qmro.qmul.ac.uk/xmlui/handle/123456789/7855.

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Mammographic density, the amount of radiodense tissue on a mammogram, is a strong risk factor for breast cancer, with properties that could be an asset in screening and prevention programmes. Its use in risk prediction contexts is currently limited, however, mainly due to di culties in measuring and interpreting density. This research investigates rstly, the properties of density as an independent marker of breast cancer risk and secondly, how density should be measured. The rst question was addressed by analysing data from a chemoprevention trial, a trial of hormonal treatment, and a cohort s

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26

Somayaji, Kamila. "Breast and Cervical Cancer Screening in Virginia: The Impact of Insurance Coverage and the Every Woman's Life Screening Program." VCU Scholars Compass, 2007. http://hdl.handle.net/10156/1890.

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27

Steffens, Rachel Fancher. "DISTRESS AND HEALTH INFORMATION INTERESTS OF WOMEN FOLLOWING A BENIGN BREAST BIOPSY." UKnowledge, 2008. http://uknowledge.uky.edu/gradschool_theses/577.

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Benign breast biopsy (BBB) can be a stressful experience for many women. Few studies have examined the specific aspects of the BBB more and less distressing. However, no research studies have examined demographic and clinical variables as they relate to distress associated with specific aspects of the BBB or the informational interests of women following a BBB. This study evaluated the magnitude of distress associated with each aspect of the BBB (additional mammography, waiting for the results of the mammography, being informed of needing a biopsy, etc.) as well as the clinical (family history

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28

Heimdahl, Maria, and Eva Johansson. "Information inför mammografi som hälsokontroll." Thesis, Uppsala universitet, Institutionen för folkhälso- och vårdvetenskap, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-225273.

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Bakgrund: I Sverige inbjuds alla kvinnor i åldern 40 till 74 år regelbundet till mammografi som hälsokontroll. Undersökningen är frivillig och syftet är att minska dödligheten i bröstcancer. För att kvinnor ska kunna fatta ett välgrundat beslut om att medverka vid mammografi som hälsokontroll eller inte, bör informationen vara relevant och sanningsenlig. Evidensbaserad information som beskriver både för- och nackdelar med mammografi som hälsokontroll är därför av stor vikt. Syftet: Syftet med denna studie var att undersöka innehållet i den information som skickas till kvinnor i Sverige i samb

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Wang, Lei, Syeda Zakia Hossain, and Lynette Mackenzie. "Breast Cancer Screening Practices and Associated Factors among Chinese-Australian Women Living in Sydney." Thesis, Discipline of Occupational Therapy, 2017. http://hdl.handle.net/2123/16304.

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In Australia, early detection plays a leading role in reducing mortality from breast cancer. Little is known about how Chinese-Australian women engage in breast cancer screenings. This study aimed to investigate breast cancer screening practices and the associated factors amongst Chinese-Australian women. A cross-sectional quantitative method including convenient and snowball sampling was used to recruit 115 Chinese-Australian women living in Sydney (aged 35 years and older). The data was collected by self-administered questionnaires between July and September 2016. The results showed that the

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30

Uher, Václav. "Zjišťování příznaků z obrazových dat." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-219307.

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Image processing is one area of signal analysis. This thesis is involved in feature extraction from image data and its implementation using Java programming language. The main contribution of this thesis lies in develop features extractors and their implementation in the program RapidMiner. The result is a robust tool for image analysis. The functionality of each operator is tested on mammogram images. A function model was developed for the removal of artifacts from the mammography images. The success rate of removal is comparable with other similar works. Furthermore, learning algorithms were

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Rouyer, Julien. "Tomographie ultrasonore dédiée à l'imagerie anatomique du sein : Validation expérimentale du projet ANAIS." Thesis, Aix-Marseille, 2012. http://www.theses.fr/2012AIXM4798/document.

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La tomographie ultrasonore assistée par ordinateur possède un fort potentiel en tant que moyen d'inspection des tissus mammaires pour le dépistage du cancer du sein; cette technique permet de réduire la dépendance à l'opérateur constatée avec l'échographie conventionnelle. Une antenne de transducteurs (3 MHz) à géométrie semi-circulaire conformée à l'anatomie du sein a été développée pour réaliser une imagerie de réflectivité des structures d'intérêt en employant une procédure de reconstruction tomographique. L'antenne comporte 1024 éléments répartis sur un arc de 190 degrés ayant un rayon de

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Campos, Lúcio Flávio de Albuquerque. "MÉTODO DE DETECÇÃO DE CÂNCER EM MAMAS DENSAS UTILIZANDO DIAGNÓSTICO AUXILIADO POR COMPUTADOR." Universidade Federal do Maranhão, 2013. http://tedebc.ufma.br:8080/jspui/handle/tede/65.

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Made available in DSpace on 2016-08-16T18:18:41Z (GMT). No. of bitstreams: 1 TESE Lucio Flavio de Albuquerque Campos.pdf: 2195360 bytes, checksum: 81d7dbefdd6a7602831593716a16b445 (MD5) Previous issue date: 2013-06-14<br>Breast Cancer remains the type of cancer with the largest incidence and mortality in women. The best method of prevention is early diagnosis, which is carried out with mammography. However, a mammogram is not effective when the breast has a composition of greater than 50% fibroglandular tissue, or dense tissue. Studies show that high breast density is identified as a risk

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Amorim, Vivian Mae Schmidt Lima. "As praticas preventivas para o cancer de mama e do colo do utero pelas mulheres de 40 anos ou mais de idade no municipio de Campinas, SP." [s.n.], 2005. http://repositorio.unicamp.br/jspui/handle/REPOSIP/311172.

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Orientador: Marilisa Berti de Azevedo Barros<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Ciencias Medicas<br>Made available in DSpace on 2018-08-06T03:54:48Z (GMT). No. of bitstreams: 1 Amorim_VivianMaeSchmidtLima_M.pdf: 4488126 bytes, checksum: 21881a106ebbf7f21647cafe00bfac77 (MD5) Previous issue date: 2005<br>Resumo:Justificativa: O câncer de mama e do colo de útero são neoplasias com altas taxas de incidência e mortalidade no Brasil e que dispõem de métodos eficazes de rastreamento para detecção precoce, oferecidos pelo Sistema Único de Saúde. Existe a nec

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Janan, Faraz. "Shape analysis in mammograms." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:96aaecce-a7bd-404f-9916-778603dbb396.

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The number of women diagnosed with the breast cancer continues to rise year on year. Breast cancer is now the most common type of cancer in the UK, with over 55000 cases reported last year. In most cases, mammography is the first step towards diagnosing breast cancer. However, it continues to have many practical limitations as compared to more sophisticated modalities such as MRI. The relatively low cost of mammography, together with the ever increasing risk of women contracting the disease, has led to many developed countries having a breast screening program. These routine breast screens are

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Obikunle, Abosede Francisca. "Barriers to Breast Cancer Prevention and Screening among African American Women." ScholarWorks, 2016. https://scholarworks.waldenu.edu/dissertations/1979.

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Breast cancer is a serious illness that often has fatal consequences. Adherence to the recommendations for breast cancer surveillance is poorly practiced among African American women. The purpose of this phenomenological study was to seek individual professed barriers to breast cancer screening among African American women to better understand why breast cancer continues to be one of the principal basis of mortality among African American women. The theoretical framework for this study was the behavioral model of health services use. Purposeful selection was used to invite 14 African American

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Sá, Amandia de Oliveira. "Detecção de agrupamento de microcalcificações em imagens de mamogramas digitalizados usando a transformada wavelet complexa de árvore dupla." Universidade Federal de São Carlos, 2016. https://repositorio.ufscar.br/handle/ufscar/7845.

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Submitted by Luciana Sebin (lusebin@ufscar.br) on 2016-10-06T13:19:49Z No. of bitstreams: 1 DissAOS.pdf: 12231590 bytes, checksum: 0d013d4adc46d9e7c5828719c8c6951f (MD5)<br>Approved for entry into archive by Marina Freitas (marinapf@ufscar.br) on 2016-10-13T20:24:59Z (GMT) No. of bitstreams: 1 DissAOS.pdf: 12231590 bytes, checksum: 0d013d4adc46d9e7c5828719c8c6951f (MD5)<br>Approved for entry into archive by Marina Freitas (marinapf@ufscar.br) on 2016-10-13T20:25:09Z (GMT) No. of bitstreams: 1 DissAOS.pdf: 12231590 bytes, checksum: 0d013d4adc46d9e7c5828719c8c6951f (MD5)<br>Made available in

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Cerneaz, Nicholas J. "Model-based analysis of mammograms." Thesis, University of Oxford, 1994. http://ora.ox.ac.uk/objects/uuid:a8d91bb2-429c-4da3-9f1b-6209771c61b5.

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Metastasised breast cancer kills. There is no known cure, there are no known preventative measures, there are no drugs available with proven capacity to abate its effects. Early identification and excision of a malignancy prior to metastasis is the only method currently available for reducing the mortality due to breast disease. Automated analysis of mammograms has been proposed as a tool to aid radiologists detect breast disease earlier and with greater efficiency and success. This thesis addresses some of the major difficulties associated with the automated analysis of mammograms, in particu

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Betal, Dibendu. "Segmentation and numerical analysis of microcalcifications using mathematical morphology." Thesis, University of Liverpool, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.307626.

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Dissanayake, Lekamlage Dilukshi Charitha Subashini Dissanayake, and Fabia Afzal. "AI-based Age Estimation from Mammograms." Thesis, Blekinge Tekniska Högskola, Institutionen för datavetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-20108.

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Background: Age estimation has attracted attention because of its various clinical and medical applications. There are many studies on human age estimation from biomedical images such as X-ray images, MRI, facial images, dental images etc. However, there is no research done on mammograms for age estimation. Therefore, in our research, we focus on age estimation from mammogram images. Objectives: The purpose of this study is to make an AI-based model for estimating age from mammogram images based on the pectoral muscle segment and check its accuracy. At first, we segment the pectoral muscle fro

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Naram, Hari Prasad. "Classification of Dense Masses in Mammograms." OpenSIUC, 2018. https://opensiuc.lib.siu.edu/dissertations/1528.

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This dissertation material provided in this work details the techniques that are developed to aid in the Classification of tumors, non-tumors, and dense masses in a Mammogram, certain characteristics such as texture in a mammographic image are used to identify the regions of interest as a part of classification. Pattern recognizing techniques such as nearest mean classifier and Support vector machine classifier are also used to classify the features. The initial stages include the processing of mammographic image to extract the relevant features that would be necessary for classification and d

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Kwok, Sze Man Simon. "Attribute-driven segmentation and analysis of mammograms." University of Western Australia. Centre for Intelligent Information Processing Systems, 2005. http://theses.library.uwa.edu.au/adt-WU2005.0010.

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[Truncated abstract] In this thesis, we introduce a mammogram analysis system developed for the automatic segmentation and analysis of mammograms. This original system has been designed to aid radiologists to detect breast cancer on mammograms. The system embodies attribute-driven segmentation in which the attributes of an image are extracted progressively in a step-by-step, hierarchical fashion. Global, low-level attributes obtained in the early stages are used to derive local, high-level attributes in later stages, leading to increasing refinement and accuracy in image segmentation and anal

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Tromans, Christopher E. "Measuring breast density from X-ray mammograms." Thesis, University of Oxford, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.558699.

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The study of the correlation between the radiological characteristics of the breast and the likelihood of the breast containing, or subsequently developing, a malignant lesion is termed breast density. In this thesis, a technique is developed for measuring the x-rav attenuation properties of breast tissue from an x-ray mammogram. The measure is independent of the characteristics and configuration of the x-ray equipment used to acquire the image. The intention is to provide a tool which facilitates the study of breast density by providing quantitative measurements of tissue characteristics, whi

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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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Debono, Josephine. "Accuracy evaluation of radiographers screen reading mammograms." Thesis, The University of Sydney, 2012. http://hdl.handle.net/2123/10540.

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This thesis evaluated the accuracy of radiographers screen-reading mammograms. This was undertaken as a potential solution to current radiologist workforce shortages that may contribute to delays in women receiving their screening mammogram results. This large, well-designed Australian study undertook extensive analysis and imparts evidence that even prior to any formal reading training, radiographers have good accuracy levels when screen-reading mammograms. It is expected that with formal screen-reading training these accuracy levels will further improve, such that radiographers have the pote

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Jonsson, Joanne, and Joakim Magnusson. "Kvinnors upplevelser av mammografi." Thesis, Umeå universitet, Institutionen för omvårdnad, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-89196.

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Bakgrund: Bröstcancer är den allra vanligaste cancerformen hos kvinnor. I Sverige drabbas omkring 8000 kvinnor av denna sjukdom varje år och cirka 1500 avlider. Från och med 1986 erbjuds alla kvinnor mellan 40-74 år att delta i regelbundna mammografikontroller. Det har gjort att allt fler kvinnor diagnostiseras tidigt i sjukdomsförloppet och att antalet dödsfall reducerats. Trots fördelarna med mammografi upplever många kvinnor undersökningen som smärtsam och påfrestande. Det är därför viktigt att få en ökad förståelse för kvinnors upplevelser för att på så sätt skapa en förutsättning för ökat

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Poissonier, Maud Beatrix. "Iconic normalisation and segmentation in x-ray mammograms." Thesis, University of Oxford, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.289122.

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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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Campos, Lucio Flavio de Albuquerque. "Classificação de Lesões em Mamografias Digitais Utilizando Análise de Componentes Independentes e Perceptron Multicamadas." Universidade Federal do Maranhão, 2006. http://tedebc.ufma.br:8080/jspui/handle/tede/344.

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Made available in DSpace on 2016-08-17T14:52:50Z (GMT). No. of bitstreams: 1 Lucio Flavio de Albuquerque Campos.pdf: 558329 bytes, checksum: 1be43a8cd03ed147f8b5187d7e538e5a (MD5) Previous issue date: 2006-03-24<br>We propose a method for discrimination and classification of mammograms with benign, malignant and normal tissues using independent component analysis and neural networks. The method was tested for a mammogram set from MIAS database, and multilayer perceptron. The method obtained a success rate of 97.83% , with 97.5% of specificity and 98% of sensitivity.<br>Neste trabalho, prop

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Zeigler, Gary Boyce. "Direct Detection of Microcalcification Pairs in Simulated Digital Mammograms." NCSU, 2002. http://www.lib.ncsu.edu/theses/available/etd-09302002-095022/.

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Using the MCMIS (Monte Carlo for Mammography Image Simulation) code, several possible scenarios of microcalcification images were simulated for the Fischer SenoscanTM digital mammography system, which has been approved for clinical use by the F.D.A. The cases simulated included detectors that have 100 ?Ým x 100 ?Ým, 50 ?Ým x 50 ?Ým, and 25 ?Ým x 25 ?Ým pixels in order to determine how much improvement can be obtained through decreased pixel size in the detection of microcalcification clusters in mammograms. Breast thickness was also varied for each modality from 4 to 7 cm in order to determine

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Lindvall, Karolina. "Simulation of lesion characterization in real and generated mammograms." Thesis, KTH, Fysik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-118438.

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