{"id":14973,"date":"2020-02-21T11:06:55","date_gmt":"2020-02-21T05:36:55","guid":{"rendered":"https:\/\/iihs.co.in\/knowledge-gateway\/?p=14973"},"modified":"2023-04-20T11:30:02","modified_gmt":"2023-04-20T06:00:02","slug":"two-automated-techniques-for-carotid-lumen-diameter-measurement-regional-versus-boundary-approaches","status":"publish","type":"post","link":"https:\/\/iihs.co.in\/knowledge-gateway\/two-automated-techniques-for-carotid-lumen-diameter-measurement-regional-versus-boundary-approaches\/","title":{"rendered":"Two Automated Techniques for Carotid Lumen Diameter Measurement: Regional versus Boundary Approaches"},"content":{"rendered":"<div id='full_slider_1'  class='avia-fullwidth-slider main_color avia-shadow   avia-builder-el-0  el_before_av_layout_row  avia-builder-el-first   container_wrap sidebar_right'  ><div  class='avia-slideshow av-av_slideshow_full-256baf843038993bbe2e04682c8b91b9 avia-slideshow-featured av_slideshow_full avia-fade-slider av-slideshow-ui 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av-av_cell_three_fifth-5227a743201b625eadc00b27db60eab9 av-gridrow-cell av_three_fifth no_margin  avia-builder-el-4  el_after_av_cell_one_fifth  el_before_av_cell_one_fifth '  ><div class='flex_cell_inner'><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-k6vqi373-fce6ddf34c9b5250a9b879355ca85330\">\n#top .av-special-heading.av-k6vqi373-fce6ddf34c9b5250a9b879355ca85330{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-k6vqi373-fce6ddf34c9b5250a9b879355ca85330 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-k6vqi373-fce6ddf34c9b5250a9b879355ca85330 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-k6vqi373-fce6ddf34c9b5250a9b879355ca85330 av-special-heading-h3  avia-builder-el-5  el_before_av_textblock  avia-builder-el-first '><h3 class='av-special-heading-tag'  itemprop=\"headline\"  >Two Automated Techniques for Carotid Lumen Diameter Measurement: Regional versus Boundary Approaches<\/h3><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-k6vqj65b-d434c02d584488ca0386fdc6ebb345b4 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p><span style=\"font-size: 13px; text-transform: none; color: #8a0000;\">Tadashi Araki, P. Krishna Kumar, Harman S. Suri, Nobutaka Ikeda, Ajay Gupta, Luca Saba, Jeny Rajan, Francesco Lavra, Aditya M. Sharma, Shoaib Shafique, Andrew Nicolaides, John R. Laird, Jasjit S. Suri,| 2016<\/span><\/p>\n<\/div><\/section><br \/>\n<section  class='av_textblock_section av-k6vqk7hk-c3a597aade1e54f73b9133641b99545a '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p class=\"p4\">Abstract<\/p>\n<p>The degree of stenosis in the carotid artery can be predicted using automated carotid lumen diameter (LD) measured from B-mode ultrasound images. Systolic velocity-based methods for measurement of LD are subjective. With the advancement of high resolution imaging, image-based methods have started to emerge. However, they require robust image analysis for accurate LD measurement. This paper presents two different algorithms for automated segmentation of the lumen borders in carotid ultrasound images. Both algorithms are modeled as a two stage process. Stage one consists of a global-based model using scale-space framework for the extraction of the region of interest. This stage is common to both algorithms. Stage two is modeled using a local-based strategy that extracts the lumen interfaces. At this stage, the algorithm-1 is modeled as a region-based strategy using a classification framework, whereas the algorithm-2 is modeled as a boundary-based approach that uses the level set framework. Two sets of databases (DB), Japan DB (JDB) (202 patients, 404 images) and Hong Kong DB (HKDB) (50 patients, 300 images) were used in this study. Two trained neuroradiologists performed manual LD tracings. The mean automated LD measured was 6.35\u00a0\u00b1\u00a00.95\u00a0mm for JDB and 6.20\u00a0\u00b1\u00a01.35\u00a0mm for HKDB. The precision-of-merit was: 97.4\u00a0% and 98.0\u00a0% w.r.t to two manual tracings for JDB and 99.7\u00a0% and 97.9\u00a0% w.r.t to two manual tracings for HKDB. 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href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/data-and-metrics\/\" class=\"tag-cloud-link tag-link-103 tag-link-position-9\" style=\"font-size: 18.347826086957pt;\" aria-label=\"Data and Metrics (30 items)\">Data and Metrics<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/design\/\" class=\"tag-cloud-link tag-link-145 tag-link-position-10\" style=\"font-size: 11.478260869565pt;\" aria-label=\"Design (4 items)\">Design<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/economic-development\/\" class=\"tag-cloud-link tag-link-99 tag-link-position-11\" style=\"font-size: 18.95652173913pt;\" aria-label=\"Economic Development (35 items)\">Economic Development<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/ecosystem\/\" class=\"tag-cloud-link tag-link-152 tag-link-position-12\" style=\"font-size: 15.826086956522pt;\" aria-label=\"Ecosystem (15 items)\">Ecosystem<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/energy\/\" class=\"tag-cloud-link tag-link-160 tag-link-position-13\" style=\"font-size: 11.478260869565pt;\" aria-label=\"Energy (4 items)\">Energy<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/environment-and-climate\/\" class=\"tag-cloud-link tag-link-104 tag-link-position-14\" style=\"font-size: 22pt;\" aria-label=\"Environment and Climate (80 items)\">Environment and Climate<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/equity\/\" class=\"tag-cloud-link tag-link-94 tag-link-position-15\" style=\"font-size: 9.5652173913043pt;\" aria-label=\"Equity (2 items)\">Equity<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/gender\/\" class=\"tag-cloud-link tag-link-110 tag-link-position-16\" style=\"font-size: 11.478260869565pt;\" aria-label=\"Gender (4 items)\">Gender<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/ghs-pop\/\" class=\"tag-cloud-link tag-link-183 tag-link-position-17\" style=\"font-size: 8pt;\" aria-label=\"GHS-POP (1 item)\">GHS-POP<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/governance\/\" class=\"tag-cloud-link tag-link-102 tag-link-position-18\" style=\"font-size: 18pt;\" aria-label=\"Governance (27 items)\">Governance<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/gynecology-and-obstetrics\/\" class=\"tag-cloud-link tag-link-188 tag-link-position-19\" style=\"font-size: 8pt;\" aria-label=\"Gynecology And Obstetrics (1 item)\">Gynecology And Obstetrics<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/health\/\" class=\"tag-cloud-link tag-link-151 tag-link-position-20\" style=\"font-size: 9.5652173913043pt;\" aria-label=\"Health (2 items)\">Health<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/higher-education\/\" class=\"tag-cloud-link tag-link-195 tag-link-position-21\" style=\"font-size: 8pt;\" aria-label=\"higher education (1 item)\">higher education<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/housing\/\" class=\"tag-cloud-link tag-link-13 tag-link-position-22\" style=\"font-size: 18pt;\" aria-label=\"Housing (27 items)\">Housing<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/human-development\/\" class=\"tag-cloud-link tag-link-100 tag-link-position-23\" style=\"font-size: 15.652173913043pt;\" aria-label=\"Human Development (14 items)\">Human Development<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/india\/\" class=\"tag-cloud-link tag-link-182 tag-link-position-24\" style=\"font-size: 8pt;\" aria-label=\"India (1 item)\">India<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/industrial-policy\/\" class=\"tag-cloud-link tag-link-80 tag-link-position-25\" style=\"font-size: 9.5652173913043pt;\" aria-label=\"Industrial Policy (2 items)\">Industrial Policy<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/institutional-structures\/\" class=\"tag-cloud-link tag-link-197 tag-link-position-26\" style=\"font-size: 8pt;\" aria-label=\"institutional structures (1 item)\">institutional structures<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/instructional-design\/\" class=\"tag-cloud-link tag-link-150 tag-link-position-27\" style=\"font-size: 9.5652173913043pt;\" aria-label=\"Instructional Design (2 items)\">Instructional Design<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/ipcc\/\" class=\"tag-cloud-link tag-link-126 tag-link-position-28\" style=\"font-size: 9.5652173913043pt;\" aria-label=\"IPCC (2 items)\">IPCC<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/knowledge\/\" class=\"tag-cloud-link tag-link-143 tag-link-position-29\" style=\"font-size: 10.608695652174pt;\" aria-label=\"Knowledge (3 items)\">Knowledge<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/land\/\" class=\"tag-cloud-link tag-link-108 tag-link-position-30\" style=\"font-size: 19.565217391304pt;\" aria-label=\"Land (42 items)\">Land<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/non-economic-loss\/\" class=\"tag-cloud-link tag-link-194 tag-link-position-31\" style=\"font-size: 8pt;\" aria-label=\"Non-Economic Loss &quot; (1 item)\">Non-Economic Loss &quot;<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/pedagogy\/\" class=\"tag-cloud-link tag-link-196 tag-link-position-32\" style=\"font-size: 8pt;\" aria-label=\"pedagogy (1 item)\">pedagogy<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/planning\/\" class=\"tag-cloud-link tag-link-106 tag-link-position-33\" style=\"font-size: 17.565217391304pt;\" aria-label=\"Planning (24 items)\">Planning<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/policies\/\" class=\"tag-cloud-link tag-link-146 tag-link-position-34\" style=\"font-size: 10.608695652174pt;\" aria-label=\"Policies (3 items)\">Policies<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/population-mapping\/\" class=\"tag-cloud-link tag-link-184 tag-link-position-35\" style=\"font-size: 8pt;\" aria-label=\"population mapping (1 item)\">population mapping<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/poverty-and-inequality\/\" class=\"tag-cloud-link tag-link-101 tag-link-position-36\" style=\"font-size: 17.391304347826pt;\" aria-label=\"Poverty and Inequality (23 items)\">Poverty and Inequality<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/research-communication\/\" class=\"tag-cloud-link tag-link-199 tag-link-position-37\" style=\"font-size: 8pt;\" aria-label=\"Bet365 लाइव क्रिकेट स्ट्रीमिंग Communication (1 item)\">Bet365 लाइव क्रिकेट स्ट्रीमिंग Communication<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/risk\/\" class=\"tag-cloud-link tag-link-97 tag-link-position-38\" style=\"font-size: 16.521739130435pt;\" aria-label=\"Risk (18 items)\">Risk<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/scholarly-publishing\/\" class=\"tag-cloud-link tag-link-130 tag-link-position-39\" style=\"font-size: 9.5652173913043pt;\" aria-label=\"Scholarly Publishing (2 items)\">Scholarly Publishing<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/science-gaps\/\" class=\"tag-cloud-link tag-link-193 tag-link-position-40\" style=\"font-size: 8pt;\" aria-label=\"Science Gaps (1 item)\">Science Gaps<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/sustainability\/\" class=\"tag-cloud-link tag-link-93 tag-link-position-41\" style=\"font-size: 12.782608695652pt;\" aria-label=\"Sustainability (6 items)\">Sustainability<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/transport\/\" class=\"tag-cloud-link tag-link-95 tag-link-position-42\" style=\"font-size: 12.173913043478pt;\" aria-label=\"Transport (5 items)\">Transport<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/urban-equality\/\" class=\"tag-cloud-link tag-link-198 tag-link-position-43\" style=\"font-size: 8pt;\" aria-label=\"urban equality (1 item)\">urban equality<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/urbanisation\/\" class=\"tag-cloud-link tag-link-88 tag-link-position-44\" style=\"font-size: 12.782608695652pt;\" aria-label=\"Urbanisation (6 items)\">Urbanisation<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/water-and-sanitation\/\" class=\"tag-cloud-link tag-link-96 tag-link-position-45\" style=\"font-size: 17.826086956522pt;\" aria-label=\"Water and Sanitation (26 items)\">Water and Sanitation<\/a><\/div>\n<\/div><\/div><\/p>\n<\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p><em> Tadashi Araki, P. Krishna Kumar, Harman S. Suri, Nobutaka Ikeda, Ajay Gupta, Luca Saba, Jeny Rajan, Francesco Lavra, Aditya M. Sharma, Shoaib Shafique, Andrew Nicolaides, John R. Laird, Jasjit S. Suri, <\/em><\/p>\n<hr\/>\n","protected":false},"author":6,"featured_media":11834,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[71],"tags":[],"class_list":["post-14973","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-paper"],"_links":{"self":[{"href":"https:\/\/iihs.co.in\/knowledge-gateway\/wp-json\/wp\/v2\/posts\/14973","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/iihs.co.in\/knowledge-gateway\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/iihs.co.in\/knowledge-gateway\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/iihs.co.in\/knowledge-gateway\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/iihs.co.in\/knowledge-gateway\/wp-json\/wp\/v2\/comments?post=14973"}],"version-history":[{"count":1,"href":"https:\/\/iihs.co.in\/knowledge-gateway\/wp-json\/wp\/v2\/posts\/14973\/revisions"}],"predecessor-version":[{"id":19409,"href":"https:\/\/iihs.co.in\/knowledge-gateway\/wp-json\/wp\/v2\/posts\/14973\/revisions\/19409"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/iihs.co.in\/knowledge-gateway\/wp-json\/wp\/v2\/media\/11834"}],"wp:attachment":[{"href":"https:\/\/iihs.co.in\/knowledge-gateway\/wp-json\/wp\/v2\/media?parent=14973"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/iihs.co.in\/knowledge-gateway\/wp-json\/wp\/v2\/categories?post=14973"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/iihs.co.in\/knowledge-gateway\/wp-json\/wp\/v2\/tags?post=14973"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}