CINXE.COM

Reposit贸rio Comum: Enhancing breast cancer diagnosis : a mammogram retrieval system and ground truth application

<!DOCTYPE html> <html> <head prefix="dspace: https://comum.rcaap.pt"> <title>Reposit贸rio Comum: Enhancing breast cancer diagnosis : a mammogram retrieval system and ground truth application</title> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <meta name="Generator" content="DSpace 5.2" /> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- RCCAP - Open Graph Protocol implementation--> <meta property="og:title" content="Enhancing breast cancer diagnosis : a mammogram retrieval system and ground truth application" /> <meta property="og:type" content="dspace:page" /> <meta property="og:url" content="https://comum.rcaap.pt/handle/10400.26/51441" /> <meta property="og:image" content="https://comum.rcaap.pt/image/logos/logo.png" /> <!-- /RCCAP - Open Graph Protocol implementation--> <!-- Stylesheets --> <link rel="shortcut icon" href="/favicon.ico" type="image/x-icon"/> <link rel="stylesheet" href="/static/css/jquery-ui-1.10.3.custom/redmond/jquery-ui-1.10.3.custom.css" type="text/css" /> <link rel="stylesheet" href="/static/css/bootstrap/layout2.css" type="text/css" /> <link rel="stylesheet" href="/static/css/bootstrap/dspace-theme.css" type="text/css" /> <!-- RSS --> <link rel="search" type="application/opensearchdescription+xml" href="/open-search/description.xml" title="Comum"/> <link rel="schema.DCTERMS" href="http://purl.org/dc/terms/" /> <link rel="schema.DC" href="http://purl.org/dc/elements/1.1/" /> <meta name="DC.contributor" content="Domingues, In锚s Campos Monteiro Sabino" /> <meta name="DC.creator" content="Roriz, C谩tia In锚s Melo" /> <meta name="DCTERMS.dateAccepted" content="2024-07-31T12:03:30Z" scheme="DCTERMS.W3CDTF" /> <meta name="DCTERMS.available" content="2024-07-31T12:03:30Z" scheme="DCTERMS.W3CDTF" /> <meta name="DCTERMS.issued" content="2024-01-29" scheme="DCTERMS.W3CDTF" /> <meta name="DC.identifier" content="http://hdl.handle.net/10400.26/51441" scheme="DCTERMS.URI" /> <meta name="DCTERMS.abstract" content="Breast cancer is a significant global health concern, affecting thousands of individuals,&#xD;&#xA;primarily women, with estimated cases expected to climb by 2040. Early-stage diagnosis&#xD;&#xA;is essential for effective treatment and better patient outcomes. This dissertation&#xD;&#xA;presents a mammogram retrieval system based on the aggregation of image classifiers&#xD;&#xA;to aid specialists in diagnosing breast cancer. The system uses a retrieval model that&#xD;&#xA;combines the output of multiple classifiers, each targeting different dimensions related&#xD;&#xA;to breast cancer diagnosis. These dimensions include breast density, asymmetries, BIRADS&#xD;&#xA;classification, calcifications, distortions, laterality, masses, and image incidence.&#xD;&#xA;This dissertation also describes the creation of an application to collect ground truth&#xD;&#xA;data to aid engineers in the development of a mammography retrieval system. The&#xD;&#xA;application is built upon OutSystems, a low-code application platform. Key features&#xD;&#xA;of the application include allowing experts to view probe images and associate them&#xD;&#xA;with relevant images from the database. Additionally, the platform allows image filtering&#xD;&#xA;based on eight mammogram dimensions. While the ultimate goal is to create&#xD;&#xA;a system for medical specialists, the current platform represents a step in the process,&#xD;&#xA;facilitating the acquisition of ground truth. As for the results obtained from the individual&#xD;&#xA;models, in the training set, for the models of each dimension, they reach an&#xD;&#xA;average accuracy of around 99.3%, while in the test set, the average accuracy is around&#xD;&#xA;78%. Four approacheswere then developed for the final retrieval model, one assigning&#xD;&#xA;equal weights to every dimension, another with empirically defined weights, a third&#xD;&#xA;where the weights were defined according to the literature, and a final one where the&#xD;&#xA;values of the weights were defined by a specialist. The quantitative results of the final&#xD;&#xA;retrieval model according to the four approaches represent the similarity between&#xD;&#xA;the probe image and the most similar image (the first image in the top-5). The similarity&#xD;&#xA;results are the result of using the individual models in a weighted sum. The first&#xD;&#xA;approach scored 0.319, the second 0.191, the third 0.197 and finally the last 0.292" xml:lang="pt_PT" /> <meta name="DC.language" content="eng" xml:lang="pt_PT" scheme="DCTERMS.RFC1766" /> <meta name="DC.rights" content="openAccess" xml:lang="pt_PT" /> <meta name="DC.subject" content="Mammogram retrieval" xml:lang="pt_PT" /> <meta name="DC.subject" content="Breast cancer" xml:lang="pt_PT" /> <meta name="DC.subject" content="Image classification" xml:lang="pt_PT" /> <meta name="DC.subject" content="Deep learning" xml:lang="pt_PT" /> <meta name="DC.subject" content="Software" xml:lang="pt_PT" /> <meta name="DC.title" content="Enhancing breast cancer diagnosis : a mammogram retrieval system and ground truth application" xml:lang="pt_PT" /> <meta name="DC.type" content="masterThesis" xml:lang="pt_PT" /> <meta name="DC.identifier" content="203531108" xml:lang="pt_PT" /> <meta name="citation_author" content="Roriz, C谩tia In锚s Melo" /> <meta name="citation_date" content="2024-01-29" /> <meta name="citation_abstract_html_url" content="https://comum.rcaap.pt/handle/10400.26/51441" /> <meta name="citation_language" content="eng" /> <meta name="citation_pdf_url" content="https://comum.rcaap.pt/bitstream/10400.26/51441/1/C%c3%a1tia%20In%c3%aas%20Melo_Roriz.pdf" /> <meta name="citation_keywords" content="Mammogram retrieval; Breast cancer; Image classification; Deep learning; Software; masterThesis" /> <meta name="citation_title" content="Enhancing breast cancer diagnosis : a mammogram retrieval system and ground truth application" /> <meta name="citation_dissertation_name" content="Enhancing breast cancer diagnosis : a mammogram retrieval system and ground truth application" /> <!-- JS --> <script type='text/javascript' src="/static/js/jquery/jquery-1.10.2.min.js"></script> <script type='text/javascript' src='/static/js/jquery/jquery-ui-1.10.3.custom.min.js'></script> <script type='text/javascript' src='/static/js/bootstrap/bootstrap.min.js'></script> <script type='text/javascript' src='/static/js/holder.js'></script> <script type="text/javascript" src="/utils.js"></script> <script type="text/javascript" src="/static/js/choice-support.js"> </script> <script type="text/javascript"> var _gaq = _gaq || []; _gaq.push(['_setAccount', 'UA-19965733-1']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); </script> <!-- HTML5 shim and Respond.js IE8 support of HTML5 elements and media queries --> <!--[if lt IE 9]> <script src="/static/js/html5shiv.js"></script> <script src="/static/js/respond.min.js"></script> <![endif]--> <!-- Begin Cookie Consent plugin by Silktide - http://silktide.com/cookieconsent --> <link rel="stylesheet" type="text/css" href="/static/css/cookieconsent.min.css" /> <script src="/static/js/cookieconsent.min.js"></script> <script> window.addEventListener("load", function(){ window.cookieconsent.initialise({ "palette": { "popup": { "background": "#000" }, "button": { "background": "#f1d600" } }, "showLink": false, "theme": "classic", "content": { "message": "Este website usa cookies para lhe garantir a melhor experi锚ncia poss铆vel.", "dismiss": "Entendi!" } })}); </script> <!-- End Cookie Consent plugin --> </head> <body class="undernavigation"> <a class="sr-only" href="#content">Skip navigation</a> <header class="navbar navbar-inverse navbar-fixed-top"> <div class="container"> <div class="navbar-header"> <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse"> <span class="icon-bar"></span> <span class="icon-bar"></span> <span class="icon-bar"></span> </button> </div> <nav class="collapse navbar-collapse bs-navbar-collapse" role="navigation"> <ul class="nav navbar-nav"> <li class=""><a href="/"><span class="glyphicon glyphicon-home"></span> P谩gina principal</a></li> <li class="dropdown"> <a href="#" class="dropdown-toggle" data-toggle="dropdown">Percorrer: <b class="caret"></b></a> <ul class="dropdown-menu"> <li><a href="/community-list">Comunidades<br/>&amp;&nbsp;Colec莽玫es</a></li> <li class="divider"></li> <li class="dropdown-header">Percorrer Itens por:</li> <li><a href="/browse?type=dateissued">Data de publica莽茫o</a></li> <li><a href="/browse?type=author">Autor</a></li> <li><a href="/browse?type=advisor">Orientador</a></li> <li><a href="/browse?type=title">T铆tulo</a></li> <li><a href="/browse?type=subject">Assunto</a></li> <li><a href="/browse?type=type">Tipo de Documento</a></li> <li><a href="/browse?type=rights">Tipo de Acesso</a></li> <li><a href="/browse?type=lcAuthor">&Iacute;ndice de Autoridade</a></li> </ul> </li> <li class=""><script type="text/javascript"> <!-- Javascript starts here document.write('<a href="#" onClick="var popupwin = window.open(\'/help_pt/index.html\',\'dspacepopup\',\'height=600,width=550,resizable,scrollbars\');popupwin.focus();return false;">Ajuda<\/a>'); // --> </script><noscript><a href="/help_pt/index.html" target="dspacepopup">Ajuda</a></noscript></li> </ul> <div class="nav navbar-nav navbar-right"> <ul class="nav navbar-nav navbar-right"> <li class="dropdown"> <a href="#" class="dropdown-toggle" data-toggle="dropdown">Idioma<b class="caret"></b></a> <ul class="dropdown-menu"> <li> <a onclick="javascript:document.repost.locale.value='pt_PT'; document.repost.submit();" href="?locale=pt_PT"> portugu锚s </a> </li> <li> <a onclick="javascript:document.repost.locale.value='en'; document.repost.submit();" href="?locale=en"> english </a> </li> </ul> </li> </ul> </div> <div class="nav navbar-nav navbar-right"> <ul class="nav navbar-nav navbar-right"> <li class="dropdown"> <a href="#" class="dropdown-toggle" data-toggle="dropdown"><span class="glyphicon glyphicon-user"></span> Entrar: <b class="caret"></b></a> <ul class="dropdown-menu"> <li><a href="/mydspace">脕rea Pessoal</a></li> <li><a href="/subscribe">Servi莽o de alertas</a></li> <li><a href="/profile">Editar conta</a></li> </ul> </li> </ul> </div> </nav> </div> </header> <main id="content" role="main"> <div class="container banner"> <div class="row"> <div class="col-md-8 brand"> <a href="/"><img class="img-responsive" src="/image/logos/logo.png" alt="Reposit贸rio Comum logo" /></a> </div> <div class="col-md-4 search"> <form method="get" action="/simple-search" class="navbar-form navbar-right"> <div class="form-group"> <input type="text" class="form-control" placeholder="Pesquisa r谩pida" name="query" id="tequery" size="25"/> </div> <button type="submit" class="btn btn-primary"><span class="glyphicon glyphicon-search"></span></button> </form> </div> </div><!-- /row --> </div><!-- /container /banner --> <div class="container"> <ol class="breadcrumb"> <li><a href="/">Reposit贸rio Comum</a></li> <li><a href="/community-list">Comunidades &amp; Colec莽玫es</a></li> <li><a href="/handle/10400.26/2665">IPC - Instituto Polit茅cnico de Coimbra</a></li> <li><a href="/handle/10400.26/2725">IPC - ISEC - Instituto Superior de Engenharia de Coimbra</a></li> <li><a href="/handle/10400.26/8940">ISEC - Trabalhos de Projeto | Relat贸rios de Est谩gio | Projetos de Investiga莽茫o</a></li> </ol> </div> <div class="container"> <div class="well">Utilize este identificador para referenciar este registo: <code>http://hdl.handle.net/10400.26/51441</code></div> <table class="table itemDisplayTable"> <tr><td class="metadataFieldLabel">T铆tulo:&nbsp;</td><td class="metadataFieldValue">Enhancing&#x20;breast&#x20;cancer&#x20;diagnosis&#x20;:&#x20;a&#x20;mammogram&#x20;retrieval&#x20;system&#x20;and&#x20;ground&#x20;truth&#x20;application</td></tr> <tr><td class="metadataFieldLabel">Autor:&nbsp;</td><td class="metadataFieldValue"><a class="author"href="/browse?type=author&amp;value=Roriz%2C+C%C3%A1tia+In%C3%AAs+Melo">Roriz,&#x20;C谩tia&#x20;In锚s&#x20;Melo</a></td></tr> <tr><td class="metadataFieldLabel">Orientador:&nbsp;</td><td class="metadataFieldValue"><a class="advisor"href="/browse?type=advisor&amp;value=Domingues%2C+In%C3%AAs+Campos+Monteiro+Sabino">Domingues,&#x20;In锚s&#x20;Campos&#x20;Monteiro&#x20;Sabino</a></td></tr> <tr><td class="metadataFieldLabel">Palavras-chave:&nbsp;</td><td class="metadataFieldValue">Mammogram&#x20;retrieval<br />Breast&#x20;cancer<br />Image&#x20;classification<br />Deep&#x20;learning<br />Software</td></tr> <tr><td class="metadataFieldLabel">Data de Defesa:&nbsp;</td><td class="metadataFieldValue">29-Jan-2024</td></tr> <tr><td class="metadataFieldLabel">Resumo:&nbsp;</td><td class="metadataFieldValue">Breast&#x20;cancer&#x20;is&#x20;a&#x20;significant&#x20;global&#x20;health&#x20;concern,&#x20;affecting&#x20;thousands&#x20;of&#x20;individuals,&#x0D;&#x0A;primarily&#x20;women,&#x20;with&#x20;estimated&#x20;cases&#x20;expected&#x20;to&#x20;climb&#x20;by&#x20;2040.&#x20;Early-stage&#x20;diagnosis&#x0D;&#x0A;is&#x20;essential&#x20;for&#x20;effective&#x20;treatment&#x20;and&#x20;better&#x20;patient&#x20;outcomes.&#x20;This&#x20;dissertation&#x0D;&#x0A;presents&#x20;a&#x20;mammogram&#x20;retrieval&#x20;system&#x20;based&#x20;on&#x20;the&#x20;aggregation&#x20;of&#x20;image&#x20;classifiers&#x0D;&#x0A;to&#x20;aid&#x20;specialists&#x20;in&#x20;diagnosing&#x20;breast&#x20;cancer.&#x20;The&#x20;system&#x20;uses&#x20;a&#x20;retrieval&#x20;model&#x20;that&#x0D;&#x0A;combines&#x20;the&#x20;output&#x20;of&#x20;multiple&#x20;classifiers,&#x20;each&#x20;targeting&#x20;different&#x20;dimensions&#x20;related&#x0D;&#x0A;to&#x20;breast&#x20;cancer&#x20;diagnosis.&#x20;These&#x20;dimensions&#x20;include&#x20;breast&#x20;density,&#x20;asymmetries,&#x20;BIRADS&#x0D;&#x0A;classification,&#x20;calcifications,&#x20;distortions,&#x20;laterality,&#x20;masses,&#x20;and&#x20;image&#x20;incidence.&#x0D;&#x0A;This&#x20;dissertation&#x20;also&#x20;describes&#x20;the&#x20;creation&#x20;of&#x20;an&#x20;application&#x20;to&#x20;collect&#x20;ground&#x20;truth&#x0D;&#x0A;data&#x20;to&#x20;aid&#x20;engineers&#x20;in&#x20;the&#x20;development&#x20;of&#x20;a&#x20;mammography&#x20;retrieval&#x20;system.&#x20;The&#x0D;&#x0A;application&#x20;is&#x20;built&#x20;upon&#x20;OutSystems,&#x20;a&#x20;low-code&#x20;application&#x20;platform.&#x20;Key&#x20;features&#x0D;&#x0A;of&#x20;the&#x20;application&#x20;include&#x20;allowing&#x20;experts&#x20;to&#x20;view&#x20;probe&#x20;images&#x20;and&#x20;associate&#x20;them&#x0D;&#x0A;with&#x20;relevant&#x20;images&#x20;from&#x20;the&#x20;database.&#x20;Additionally,&#x20;the&#x20;platform&#x20;allows&#x20;image&#x20;filtering&#x0D;&#x0A;based&#x20;on&#x20;eight&#x20;mammogram&#x20;dimensions.&#x20;While&#x20;the&#x20;ultimate&#x20;goal&#x20;is&#x20;to&#x20;create&#x0D;&#x0A;a&#x20;system&#x20;for&#x20;medical&#x20;specialists,&#x20;the&#x20;current&#x20;platform&#x20;represents&#x20;a&#x20;step&#x20;in&#x20;the&#x20;process,&#x0D;&#x0A;facilitating&#x20;the&#x20;acquisition&#x20;of&#x20;ground&#x20;truth.&#x20;As&#x20;for&#x20;the&#x20;results&#x20;obtained&#x20;from&#x20;the&#x20;individual&#x0D;&#x0A;models,&#x20;in&#x20;the&#x20;training&#x20;set,&#x20;for&#x20;the&#x20;models&#x20;of&#x20;each&#x20;dimension,&#x20;they&#x20;reach&#x20;an&#x0D;&#x0A;average&#x20;accuracy&#x20;of&#x20;around&#x20;99.3%,&#x20;while&#x20;in&#x20;the&#x20;test&#x20;set,&#x20;the&#x20;average&#x20;accuracy&#x20;is&#x20;around&#x0D;&#x0A;78%.&#x20;Four&#x20;approacheswere&#x20;then&#x20;developed&#x20;for&#x20;the&#x20;final&#x20;retrieval&#x20;model,&#x20;one&#x20;assigning&#x0D;&#x0A;equal&#x20;weights&#x20;to&#x20;every&#x20;dimension,&#x20;another&#x20;with&#x20;empirically&#x20;defined&#x20;weights,&#x20;a&#x20;third&#x0D;&#x0A;where&#x20;the&#x20;weights&#x20;were&#x20;defined&#x20;according&#x20;to&#x20;the&#x20;literature,&#x20;and&#x20;a&#x20;final&#x20;one&#x20;where&#x20;the&#x0D;&#x0A;values&#x20;of&#x20;the&#x20;weights&#x20;were&#x20;defined&#x20;by&#x20;a&#x20;specialist.&#x20;The&#x20;quantitative&#x20;results&#x20;of&#x20;the&#x20;final&#x0D;&#x0A;retrieval&#x20;model&#x20;according&#x20;to&#x20;the&#x20;four&#x20;approaches&#x20;represent&#x20;the&#x20;similarity&#x20;between&#x0D;&#x0A;the&#x20;probe&#x20;image&#x20;and&#x20;the&#x20;most&#x20;similar&#x20;image&#x20;(the&#x20;first&#x20;image&#x20;in&#x20;the&#x20;top-5).&#x20;The&#x20;similarity&#x0D;&#x0A;results&#x20;are&#x20;the&#x20;result&#x20;of&#x20;using&#x20;the&#x20;individual&#x20;models&#x20;in&#x20;a&#x20;weighted&#x20;sum.&#x20;The&#x20;first&#x0D;&#x0A;approach&#x20;scored&#x20;0.319,&#x20;the&#x20;second&#x20;0.191,&#x20;the&#x20;third&#x20;0.197&#x20;and&#x20;finally&#x20;the&#x20;last&#x20;0.292</td></tr> <tr><td class="metadataFieldLabel">URI:&nbsp;</td><td class="metadataFieldValue"><a href="http://hdl.handle.net/10400.26/51441">http:&#x2F;&#x2F;hdl.handle.net&#x2F;10400.26&#x2F;51441</a></td></tr> <tr><td class="metadataFieldLabel">Aparece nas colec莽玫es:</td><td class="metadataFieldValue"><a href="/handle/10400.26/8940">ISEC - Trabalhos de Projeto | Relat贸rios de Est谩gio | Projetos de Investiga莽茫o</a><br/></td></tr> </table><br/> <div class="panel panel-info"><div class="panel-heading">Ficheiros deste registo:</div> <table class="table panel-body"><tr><th id="t1" class="standard">Ficheiro</th> <th id="t2" class="standard">Descri莽茫o </th> <th id="t3" class="standard">Tamanho</th><th id="t4" class="standard">Formato</th><th>&nbsp;</th></tr> <tr><td headers="t1" class="standard"><a target="_blank" href="/bitstream/10400.26/51441/1/C%c3%a1tia%20In%c3%aas%20Melo_Roriz.pdf">C谩tia In锚s Melo_Roriz.pdf</a></td><td headers="t2" class="standard"></td><td headers="t3" class="standard">8,96 MB</td><td headers="t4" class="standard">Adobe PDF</td><td class="standard" align="center"><a class="btn btn-primary" target="_blank" href="/bitstream/10400.26/51441/1/C%c3%a1tia%20In%c3%aas%20Melo_Roriz.pdf">Ver/Abrir</a></td></tr></table> </div> <div class="container row"> <a class="btn btn-primary" href="/handle/10400.26/51441?mode=full"> Mostrar registo em formato completo </a> <!--<a class="statisticsLink btn btn-primary" href="/handle/10400.26/51441/statistics"><span class="glyphicon glyphicon-stats"></span></a>--> <!--STATS ADDON --> <a class="statisticsLink btn btn-info" href="/stats?level=item&type=access&page=downviews-series&object=item&object-id=10400.26/51441"> <span class="glyphicon glyphicon-stats"></span></a> <!--END STATS ADDON --> <a class="btn btn-success" href="/feedback?feedback=Gostaria de deixar coment谩rio sobre o registo: %20http://hdl.handle.net/10400.26/51441" target="new_window"> D&ecirc; a sua opini&atilde;o sobre este registo.</a> </div> <br/> <br/> <!-- && !isAdmin removed. sharing bar will appear even to the Administration zone --> <div class="container well sharingbar" style="height: 35px; padding-left: 10px; padding-right:10px; padding-top:6px"> <div class="left" style="float: left"> <a target="_blank" href="http://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Fcomum.rcaap.pt%2Fhandle%2F10400.26%2F51441"><img alt="Facebook" title="Partilhe no Facebook" src="/image/sharing/facebook.png"></a><a target="_blank" href="http://twitter.com/home?status=Enhancing+breast+cancer+diagnosis+%3A+a+mammogram+retrieval+system+and+ground+truth+...-https%3A%2F%2Fcomum.rcaap.pt%2Fhandle%2F10400.26%2F51441"><img alt="Twitter" title="Partilhe no Twitter" src="/image/sharing/twitter.png"></a><a target="_blank" href="http://delicious.com/post?url=https%3A%2F%2Fcomum.rcaap.pt%2Fhandle%2F10400.26%2F51441&title=Enhancing+breast+cancer+diagnosis+%3A+a+mammogram+retrieval+system+and+ground+truth+application"><img alt="Delicious" title="Partilhe no Delicious" src="/image/sharing/delicious.png"></a><a target="_blank" href="http://www.linkedin.com/shareArticle?mini=true&url=https%3A%2F%2Fcomum.rcaap.pt%2Fhandle%2F10400.26%2F51441&title=Enhancing+breast+cancer+diagnosis+%3A+a+mammogram+retrieval+system+and+ground+truth+application&summary=Breast+cancer+is+a+significant+global+health+concern%2C+affecting+thousands+of+individuals%2C%0D%0Aprimarily+women%2C+with+estimated+cases+expected+to+climb+by+2040.+Early-stage+diagnosis%0D%0Ais+essential+for+effective+treatment+and+better+patient+outcomes.+This+dissertation%0D%0Apresents+a+mammogram+retrieval+system+based+on+the+aggregation+of+image+classifiers%0D%0Ato+aid+specialists+in+diagnosing+breast+cancer.+The+system+uses+a+retrieval+model+that%0D%0Acombines+the+output+of+multiple+classifiers%2C+each+targeting+different+dimensions+related%0D%0Ato+breast+cancer+diagnosis.+These+dimensions+include+breast+density%2C+asymmetries%2C+BIRADS%0D%0Aclassification%2C+calcifications%2C+distortions%2C+laterality%2C+masses%2C+and+image+incidence.%0D%0AThis+dissertation+also+describes+the+creation+of+an+application+to+collect+ground+truth%0D%0Adata+to+aid+engineers+in+the+development+of+a+mammography+retrieval+system.+The%0D%0Aapplication+is+built+upon+OutSystems%2C+a+low-code+application+platform.+Key+features%0D%0Aof+the+application+include+allowing+experts+to+view+probe+images+and+associate+them%0D%0Awith+relevant+images+from+the+database.+Additionally%2C+the+platform+allows+image+filtering%0D%0Abased+on+eight+mammogram+dimensions.+While+the+ultimate+goal+is+to+create%0D%0Aa+system+for+medical+specialists%2C+the+current+platform+represents+a+step+in+the+process%2C%0D%0Afacilitating+the+acquisition+of+ground+truth.+As+for+the+results+obtained+from+the+individual%0D%0Amodels%2C+in+the+training+set%2C+for+the+models+of+each+dimension%2C+they+reach+an%0D%0Aaverage+accuracy+of+around+99.3%25%2C+while+in+the+test+set%2C+the+average+accuracy+is+around%0D%0A78%25.+Four+approacheswere+then+developed+for+the+final+retrieval+model%2C+one+assigning%0D%0Aequal+weights+to+every+dimension%2C+another+with+empirically+defined+weights%2C+a+third%0D%0Awhere+the+weights+were+defined+according+to+the+literature%2C+and+a+final+one+where+the%0D%0Avalues+of+the+weights+were+defined+by+a+specialist.+The+quantitative+results+of+the+final%0D%0Aretrieval+model+according+to+the+four+approaches+represent+the+similarity+between%0D%0Athe+probe+image+and+the+most+similar+image+%28the+first+image+in+the+top-5%29.+The+similarity%0D%0Aresults+are+the+result+of+using+the+individual+models+in+a+weighted+sum.+The+first%0D%0Aapproach+scored+0.319%2C+the+second+0.191%2C+the+third+0.197+and+finally+the+last+0.292"><img alt="LinkedIn" title="Partilhe no LinkedIn" src="/image/sharing/linkedin.png"></a><a target="_blank" href="http://digg.com/submit?phase=2&url=https%3A%2F%2Fcomum.rcaap.pt%2Fhandle%2F10400.26%2F51441"><img alt="Digg" title="Partilhe no Digg" src="/image/sharing/digg.png"></a><a target="_blank" href="https://www.google.com/bookmarks/mark?op=add&bkmk=https%3A%2F%2Fcomum.rcaap.pt%2Fhandle%2F10400.26%2F51441&title=Enhancing+breast+cancer+diagnosis+%3A+a+mammogram+retrieval+system+and+ground+truth+application"><img alt="Google Bookmarks" title="Adicionar ao Google Bookmarks" src="/image/sharing/googlebookmark.png"></a><a target="_blank" href="http://www.myspace.com/Modules/PostTo/Pages/?u=https%3A%2F%2Fcomum.rcaap.pt%2Fhandle%2F10400.26%2F51441"><img alt="MySpace" title="Partilhe no MySpace" src="/image/sharing/myspace.png"></a> </div> <div class="right" style="float: right"> <a href="https://comum.rcaap.pt/sharing?handler=bibtex&id=50986" target="_blank"><img src=/image/sharing/bibtex.png title="Exporte no formato BibTex" alt="Formato BibTex"></a><span class="sharingFloatLeft">&nbsp;</span><a target="_blank" href="https://www.mendeley.com/import/?url=https%3A%2F%2Fcomum.rcaap.pt%2Fhandle%2F10400.26%2F51441#"><img alt="Mendeley" title="Adicione ao Mendeley" src="/image/sharing/mendeley.png"></a><a href="https://comum.rcaap.pt/sharing?handler=endnote&id=50986" target="_blank"><img src=/image/sharing/endnote.png title="Exporte no formato Endnote" alt="Endnote"></a><span class="sharingFloatLeft">&nbsp;</span> </div> <div class="clear"></div> </div> <p class="submitFormHelp alert alert-info">Todos os registos no reposit贸rio est茫o protegidos por leis de copyright, com todos os direitos reservados.</p> <div class="footer-custom-rcaap"> <div class="container"> <div class="col-md-8"> <ul class="list-inline copyright pull-left"> <li>&copy; 2014 - REPOSIT&Oacute;RIO COMUM</li> <li><a target="_blank" href="http://projecto.rcaap.pt/index.php/lang-pt/sobre-o-rcaap/servicos/repositorio-comum">Sobre</a></li> <li><a href="/feedback">Contacto</a></li> <li><a href="/stats?level=general&type=access&page=downviews-series">Estat铆sticas</a></li> </ul> </div> <div class="col-md-4"> <ul class="list-inline pull-right"> <li><a href="http://www.rcaap.pt" alt="RCAAP" target="_blank" title="RCAAP"> <img src="/image/logos/rcaap3.jpg" alt="RCAAP" border="0" /></a></li> </ul> </div> </div> </div> </main> <footer class="navbar navbar-bottom"> <div id="designedby" class="container text-muted"> <div id="footer_feedback" class="pull-right"> <!--<p class="text-muted"><a target="_blank" href="http://www.dspace.org/">DSpace Software</a> Copyright&nbsp;&copy;&nbsp;2002-2009&nbsp; The DSpace Foundation&nbsp;- <a target="_blank" href="/feedback">Coment谩rios</a> <a href="/htmlmap"></a></p>--> </div> </div> <!-- rcaap footer --> <div class="container"> <div class="row"> <div class="col-md-6 promotors"> <p>Promotores do RCAAP:</p> <a href="http://www.fccn.pt" target="_blank" title="Funda&ccedil;&atilde;o para a Ci&ecirc;ncia e a Tecnologia"><span class="hide-text logos logos-logo-fct-fccn">Funda&ccedil;&atilde;o para a Ci&ecirc;ncia e a Tecnologia - Funda&ccedil;&atilde;o para a Computa&ccedil;&atilde;o Cient&iacute;fica Nacional</span></a> <a href="http://www.uminho.pt" target="_blank" title="Universidade do Minho"><span class="hide-text logos logos-logo-uminho">Universidade do Minho</span></a> </div> <div class="col-md-6 sponsors"> <p>Financiadores do RCAAP:</p> <a href="http://www.portugal.gov.pt/" target="_blank" title="Rep&uacute;blica Portuguesa"><span class="hide-text logos logos-logo-rp-mctes">Rep&uacute;blica Portuguesa &middot; Minist&eacute;rio da Ci&ecirc;ncia, Tecnologia e Ensino Superior</span></a> <!--a href="http://www.posc.mctes.pt/" target="_blank" title="POS_Conhecimento"><span class="hide-text logos logos-logo-posc">POS_C</span></a--> <a href="https://europa.eu/european-union/index_pt" target="_blank" title="Uni&atilde;o Europeia"><span class="hide-text logos logos-logo_FEDER">Uni&atilde;o Europeia - Programa FEDER</span></a> </div> </div> </div> </footer> </body> </html>

Pages: 1 2 3 4 5 6 7 8 9 10