Modeling frequency shifts and intensity variations from in-vivo Albunex microspheres

Modeling frequency shifts and intensity variations from in-vivo Albunex microspheres

An acoustical model is proposed which enables one to estimate how back-scattered ultrasound intensity, mean frequency, and bandwidth depend on in-vivo contrast agent concentration and size distribution, on the depth of the scatterer the width of the blood volume containing microspheres in the ventri...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Holm, S., Myhrum, M.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Acoustics
Attenuation
Blood
Heart
Mathematical models
Transducers
Ultrasonic imaging
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page 912 vol.2
container_issue
container_start_page 909
container_title
container_volume
creator Holm, S.
Myhrum, M.
description An acoustical model is proposed which enables one to estimate how back-scattered ultrasound intensity, mean frequency, and bandwidth depend on in-vivo contrast agent concentration and size distribution, on the depth of the scatterer the width of the blood volume containing microspheres in the ventricle, and the type of tissue between the scatterer and the transducer, and on ultrasound frequency and bandwidth of the emitted signal. An important result is that the frequency shifts and the intensity variations are caused both by the microspheres in the path between the transducer and the region of interest, and by the reflection properties of the contrast agent in the region of interest. The model enables one to explain and predict clinically observed intensity effects such as the shadow effect in the right ventricle, and the fact that received intensity increases with concentration up to a certain point where it falls off
doi_str_mv 10.1109/ULTSYM.1993.339660
format Conference Proceeding
fullrecord <record><control><sourceid>ieee_6IE</sourceid><recordid>TN_cdi_ieee_primary_5727220</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><ieee_id>5727220</ieee_id><sourcerecordid>5727220</sourcerecordid><originalsourceid>FETCH-LOGICAL-i173t-864ccfb35f609f802387dfff2ac5784962f73ed1f1e819ef2ef08f479044174f3</originalsourceid><addsrcrecordid>eNotjMtOwzAUBS0hJKD0B2DjH0jxK7G9rCpeUioWpAtWlZvcS40Sp9hpRP6eSHA2s5jRIeSOsxXnzD7syur9Y7vi1sqVlLYo2AW5YdowKRgX8oosU_pi8_LcWGGvSbXtG2h9-KQY4fsMoZ5oOnocEnWhoT4MEJIfJjq66N3g-5Dmsu9mk41-7Om6PZwD_NDO17FPpyNESLfkEl2bYPnPBdk9PVabl6x8e37drMvMcy2HzBSqrvEgcyyYRcOENLpBROHqXBtlC4FaQsORg-EWUAAyg0pbphTXCuWC3P_9egDYn6LvXJz2uRZaCCZ_ASyPUJw</addsrcrecordid><sourcetype>Publisher</sourcetype><iscdi>true</iscdi><recordtype>conference_proceeding</recordtype></control><display><type>conference_proceeding</type><title>Modeling frequency shifts and intensity variations from in-vivo Albunex microspheres</title><source>IEEE Electronic Library (IEL) Conference Proceedings</source><creator>Holm, S. ; Myhrum, M.</creator><creatorcontrib>Holm, S. ; Myhrum, M.</creatorcontrib><description>An acoustical model is proposed which enables one to estimate how back-scattered ultrasound intensity, mean frequency, and bandwidth depend on in-vivo contrast agent concentration and size distribution, on the depth of the scatterer the width of the blood volume containing microspheres in the ventricle, and the type of tissue between the scatterer and the transducer, and on ultrasound frequency and bandwidth of the emitted signal. An important result is that the frequency shifts and the intensity variations are caused both by the microspheres in the path between the transducer and the region of interest, and by the reflection properties of the contrast agent in the region of interest. The model enables one to explain and predict clinically observed intensity effects such as the shadow effect in the right ventricle, and the fact that received intensity increases with concentration up to a certain point where it falls off</description><identifier>ISBN: 0780320123</identifier><identifier>ISBN: 9780780320123</identifier><identifier>DOI: 10.1109/ULTSYM.1993.339660</identifier><language>eng</language><subject>Acoustics ; Attenuation ; Blood ; Heart ; Mathematical models ; Transducers ; Ultrasonic imaging</subject><ispartof>1993 Proceedings IEEE Ultrasonics Symposium, 1993, p.909-912 vol.2</ispartof><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/5727220$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>309,310,780,784,789,790,2058,4050,4051,27925,54920</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/5727220$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Holm, S.</creatorcontrib><creatorcontrib>Myhrum, M.</creatorcontrib><title>Modeling frequency shifts and intensity variations from in-vivo Albunex microspheres</title><title>1993 Proceedings IEEE Ultrasonics Symposium</title><addtitle>ULTSYM</addtitle><description>An acoustical model is proposed which enables one to estimate how back-scattered ultrasound intensity, mean frequency, and bandwidth depend on in-vivo contrast agent concentration and size distribution, on the depth of the scatterer the width of the blood volume containing microspheres in the ventricle, and the type of tissue between the scatterer and the transducer, and on ultrasound frequency and bandwidth of the emitted signal. An important result is that the frequency shifts and the intensity variations are caused both by the microspheres in the path between the transducer and the region of interest, and by the reflection properties of the contrast agent in the region of interest. The model enables one to explain and predict clinically observed intensity effects such as the shadow effect in the right ventricle, and the fact that received intensity increases with concentration up to a certain point where it falls off</description><subject>Acoustics</subject><subject>Attenuation</subject><subject>Blood</subject><subject>Heart</subject><subject>Mathematical models</subject><subject>Transducers</subject><subject>Ultrasonic imaging</subject><isbn>0780320123</isbn><isbn>9780780320123</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>1993</creationdate><recordtype>conference_proceeding</recordtype><sourceid>6IE</sourceid><sourceid>RIE</sourceid><recordid>eNotjMtOwzAUBS0hJKD0B2DjH0jxK7G9rCpeUioWpAtWlZvcS40Sp9hpRP6eSHA2s5jRIeSOsxXnzD7syur9Y7vi1sqVlLYo2AW5YdowKRgX8oosU_pi8_LcWGGvSbXtG2h9-KQY4fsMoZ5oOnocEnWhoT4MEJIfJjq66N3g-5Dmsu9mk41-7Om6PZwD_NDO17FPpyNESLfkEl2bYPnPBdk9PVabl6x8e37drMvMcy2HzBSqrvEgcyyYRcOENLpBROHqXBtlC4FaQsORg-EWUAAyg0pbphTXCuWC3P_9egDYn6LvXJz2uRZaCCZ_ASyPUJw</recordid><startdate>1993</startdate><enddate>1993</enddate><creator>Holm, S.</creator><creator>Myhrum, M.</creator><scope>6IE</scope><scope>6IL</scope><scope>CBEJK</scope><scope>RIE</scope><scope>RIL</scope></search><sort><creationdate>1993</creationdate><title>Modeling frequency shifts and intensity variations from in-vivo Albunex microspheres</title><author>Holm, S. ; Myhrum, M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i173t-864ccfb35f609f802387dfff2ac5784962f73ed1f1e819ef2ef08f479044174f3</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>1993</creationdate><topic>Acoustics</topic><topic>Attenuation</topic><topic>Blood</topic><topic>Heart</topic><topic>Mathematical models</topic><topic>Transducers</topic><topic>Ultrasonic imaging</topic><toplevel>online_resources</toplevel><creatorcontrib>Holm, S.</creatorcontrib><creatorcontrib>Myhrum, M.</creatorcontrib><collection>IEEE Electronic Library (IEL) Conference Proceedings</collection><collection>IEEE Proceedings Order Plan All Online (POP All Online) 1998-present by volume</collection><collection>IEEE Xplore All Conference Proceedings</collection><collection>IEEE Electronic Library (IEL)</collection><collection>IEEE Proceedings Order Plans (POP All) 1998-Present</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Holm, S.</au><au>Myhrum, M.</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Modeling frequency shifts and intensity variations from in-vivo Albunex microspheres</atitle><btitle>1993 Proceedings IEEE Ultrasonics Symposium</btitle><stitle>ULTSYM</stitle><date>1993</date><risdate>1993</risdate><spage>909</spage><epage>912 vol.2</epage><pages>909-912 vol.2</pages><isbn>0780320123</isbn><isbn>9780780320123</isbn><abstract>An acoustical model is proposed which enables one to estimate how back-scattered ultrasound intensity, mean frequency, and bandwidth depend on in-vivo contrast agent concentration and size distribution, on the depth of the scatterer the width of the blood volume containing microspheres in the ventricle, and the type of tissue between the scatterer and the transducer, and on ultrasound frequency and bandwidth of the emitted signal. An important result is that the frequency shifts and the intensity variations are caused both by the microspheres in the path between the transducer and the region of interest, and by the reflection properties of the contrast agent in the region of interest. The model enables one to explain and predict clinically observed intensity effects such as the shadow effect in the right ventricle, and the fact that received intensity increases with concentration up to a certain point where it falls off</abstract><doi>10.1109/ULTSYM.1993.339660</doi></addata></record>
fulltext fulltext_linktorsrc
identifier ISBN: 0780320123
ispartof 1993 Proceedings IEEE Ultrasonics Symposium, 1993, p.909-912 vol.2
issn
language eng
recordid cdi_ieee_primary_5727220
source IEEE Electronic Library (IEL) Conference Proceedings
subjects Acoustics
Attenuation
Blood
Heart
Mathematical models
Transducers
Ultrasonic imaging
title Modeling frequency shifts and intensity variations from in-vivo Albunex microspheres
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-26T05%3A26%3A44IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-ieee_6IE&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=proceeding&rft.atitle=Modeling%20frequency%20shifts%20and%20intensity%20variations%20from%20in-vivo%20Albunex%20microspheres&rft.btitle=1993%20Proceedings%20IEEE%20Ultrasonics%20Symposium&rft.au=Holm,%20S.&rft.date=1993&rft.spage=909&rft.epage=912%20vol.2&rft.pages=909-912%20vol.2&rft.isbn=0780320123&rft.isbn_list=9780780320123&rft_id=info:doi/10.1109/ULTSYM.1993.339660&rft_dat=%3Cieee_6IE%3E5727220%3C/ieee_6IE%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rft_ieee_id=5727220&rfr_iscdi=true