{"id":881,"date":"2014-08-01T16:24:45","date_gmt":"2014-08-01T20:24:45","guid":{"rendered":"https:\/\/engineering.jhu.edu\/fsag\/?page_id=881"},"modified":"2017-05-24T18:57:58","modified_gmt":"2017-05-24T22:57:58","slug":"phantom-testing-validation","status":"publish","type":"page","link":"https:\/\/engineering.jhu.edu\/fsag\/nsf_sch_project_homepage\/phantom-testing-validation\/","title":{"rendered":"Phantom Testing and Validation"},"content":{"rendered":"

Phantom Testing and Validation<\/strong><\/p>\n

In order to validate the computational hemoacoustic model and to investigate and\u00a0develop sound source identification algorithms in-vitro, we will employ a canonical phantom of the thorax.\u00a0The thoracic phantom will include three \u201corgans\u201d: lungs and bones and tissue, each\u00a0with distinct acoustic properties<\/p>\n

For recreating flow-induced sounds inside the thorax, a hollow space with the shape of a tube with an eccentric obstruction is created inside the tissue mimicking material; flow through this orifice will generate vortex shedding, and an associated sound that mimics many cardiac murmurs (such as in valvular regurgitation, valvular stenoses, obstructive HCM, ventral-septal defects etc). The flow rate (and through that, the intensity and spectrum of the sound) will be varied by adjusting the valve and the actual flow rate, pressure, and the wall oscillation will be measured to characterize the source mechanism. Furthermore, the eccentric obstruction will be designed to allow rotation thereby providing an ability to vary the directivity of the sound.<\/p>\n

 <\/p>\n

\"Experimental_set_up\"<\/a><\/p>\n

\"output_wEK2la\"<\/a>
Schematic illustration of the experimental set-up<\/figcaption><\/figure>\n

For more information about phantom testing, please refer to this paper:<\/p>\n

Bakhshaee, H.; Garreau, G.; Tognetti, G.; Shoele, K.; Carrero, R.; Kilmar, T.; Zhu, C.; Thompson, W.R.; Seo, J. H.; Mittal, R.; Andreou, A.G., \u201cMechanical design, instrumentation and measurements from a hemoacoustic cardiac phantom,\u201d\u00a0Information Sciences and Systems (CISS), 2015 49th Annual Conference on<\/i>\u00a0, vol., no., pp.1,5, 18-20 March 2015,\u00a0doi: 10.1109\/CISS.2015.7086901.<\/span><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Phantom Testing and Validation In order to validate the computational hemoacoustic model and to investigate and\u00a0develop sound source identification algorithms in-vitro, we will employ a canonical phantom of the thorax.\u00a0The thoracic phantom will include three \u201corgans\u201d: lungs and bones and …<\/p>\n

Phantom Testing and Validation<\/span> Read More »<\/a><\/p>\n","protected":false},"author":122,"featured_media":0,"parent":496,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"class_list":["post-881","page","type-page","status-publish","hentry"],"yoast_head":"\nPhantom Testing and Validation - Flow Physics and Computation Lab<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/engineering.jhu.edu\/fsag\/nsf_sch_project_homepage\/phantom-testing-validation\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Phantom Testing and Validation - Flow Physics and Computation Lab\" \/>\n<meta property=\"og:description\" content=\"Phantom Testing and Validation In order to validate the computational hemoacoustic model and to investigate and\u00a0develop sound source identification algorithms in-vitro, we will employ a canonical phantom of the thorax.\u00a0The thoracic phantom will include three \u201corgans\u201d: lungs and bones and … Phantom Testing and Validation Read More »\" \/>\n<meta property=\"og:url\" content=\"https:\/\/engineering.jhu.edu\/fsag\/nsf_sch_project_homepage\/phantom-testing-validation\/\" \/>\n<meta property=\"og:site_name\" content=\"Flow Physics and Computation Lab\" \/>\n<meta property=\"article:modified_time\" content=\"2017-05-24T22:57:58+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/engineering.jhu.edu\/fsag\/wp-content\/uploads\/2014\/08\/Experimental_set_up1.png\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/engineering.jhu.edu\\\/fsag\\\/nsf_sch_project_homepage\\\/phantom-testing-validation\\\/\",\"url\":\"https:\\\/\\\/engineering.jhu.edu\\\/fsag\\\/nsf_sch_project_homepage\\\/phantom-testing-validation\\\/\",\"name\":\"Phantom Testing and Validation - 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