Flow Complexity Estimation in Dysfunctional Arteriovenous Dialysis Fistulas using Vector Flow Imaging
Non-invasive assessment is preferred for monitoring arteriovenous dialysis fistulas (AVFs). Vector concentration assesses flow complexity, which may correlate with stenosis severity. We determined whether vector concentration could assess stenosis severity in dysfunctional AVFs. Vector concentration...
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| Veröffentlicht in: | Ultrasound in medicine & biology 2020-09, Vol.46 (9), p.2493-2504 |
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| creator | Nguyen, Tin-Quoc Traberg, Marie Sand Olesen, Jacob Bjerring Heerwagen, Søren Thorup Brandt, Andreas Hjelm Bechsgaard, Thor Pedersen, Brian Lindegaard Moshavegh, Ramin Lönn, Lars Jensen, Jørgen Arendt Nielsen, Michael Bachmann Hansen, Kristoffer Lindskov |
| description | Non-invasive assessment is preferred for monitoring arteriovenous dialysis fistulas (AVFs). Vector concentration assesses flow complexity, which may correlate with stenosis severity. We determined whether vector concentration could assess stenosis severity in dysfunctional AVFs. Vector concentration was estimated in four stenotic phantoms at different pulse repetition frequencies. Spectral Doppler peak velocity and vector concentration were measured in 12 patients with dysfunctional AVFs. Additionally, 5 patients underwent digital subtraction angiography (DSA). In phantoms, vector concentration exhibited an inverse relationship with stenosis severity and was less affected by aliasing in severe stenoses. In nine stenoses of 5 patients undergoing DSA, vector concentration correlated strongly with stenosis severity (first stenosis: r = –0.73, p = 0.04; other stenoses; r = –0.69, p = 0.02) and mid-stenotic diameter (first stenosis: r = 0.87, p = 0.006; other stenoses: r = 0.70, p = 0.02) as opposed to peak velocities (p > 0.05). Vector concentration is less affected by aliasing in severe stenoses and correlates with DSA in patients with dysfunctional AVF. |
| doi_str_mv | 10.1016/j.ultrasmedbio.2020.05.021 |
| format | Article |
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Vector concentration assesses flow complexity, which may correlate with stenosis severity. We determined whether vector concentration could assess stenosis severity in dysfunctional AVFs. Vector concentration was estimated in four stenotic phantoms at different pulse repetition frequencies. Spectral Doppler peak velocity and vector concentration were measured in 12 patients with dysfunctional AVFs. Additionally, 5 patients underwent digital subtraction angiography (DSA). In phantoms, vector concentration exhibited an inverse relationship with stenosis severity and was less affected by aliasing in severe stenoses. In nine stenoses of 5 patients undergoing DSA, vector concentration correlated strongly with stenosis severity (first stenosis: r = –0.73, p = 0.04; other stenoses; r = –0.69, p = 0.02) and mid-stenotic diameter (first stenosis: r = 0.87, p = 0.006; other stenoses: r = 0.70, p = 0.02) as opposed to peak velocities (p > 0.05). 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Vector concentration assesses flow complexity, which may correlate with stenosis severity. We determined whether vector concentration could assess stenosis severity in dysfunctional AVFs. Vector concentration was estimated in four stenotic phantoms at different pulse repetition frequencies. Spectral Doppler peak velocity and vector concentration were measured in 12 patients with dysfunctional AVFs. Additionally, 5 patients underwent digital subtraction angiography (DSA). In phantoms, vector concentration exhibited an inverse relationship with stenosis severity and was less affected by aliasing in severe stenoses. In nine stenoses of 5 patients undergoing DSA, vector concentration correlated strongly with stenosis severity (first stenosis: r = –0.73, p = 0.04; other stenoses; r = –0.69, p = 0.02) and mid-stenotic diameter (first stenosis: r = 0.87, p = 0.006; other stenoses: r = 0.70, p = 0.02) as opposed to peak velocities (p > 0.05). Vector concentration is less affected by aliasing in severe stenoses and correlates with DSA in patients with dysfunctional AVF.</description><subject>Arteriovenous dialysis fistula</subject><subject>Digital subtraction angiography</subject><subject>Flow complexity</subject><subject>Patient study</subject><subject>Phantom study</subject><subject>Spectral Doppler ultrasound</subject><subject>Stenosis assessment</subject><subject>Vector flow imaging</subject><issn>0301-5629</issn><issn>1879-291X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNqNkE1v1DAQhi0EotvCX0AWJy4J_oidmFu12y2VKvVCK26W40wqr5x4sZ3C_nu8bEEcexrNzDvzzjwIfaSkpoTKz7t68TmaNMHQu1AzwkhNRE0YfYVWtGtVxRT9_hqtCCe0EpKpM3Se0o4Q0krevkVnnAkliGhXCLY-_MTrMO09_HL5gK9SdpPJLszYzXhzSOMy22NqPL6MGaILTzCHJeGNM_6QXMJbl_LiTcJLcvMjfgCbQ8R_Ft9M5rHU3qE3o_EJ3j_HC3S_vfq2_lrd3l3frC9vK9twlqtBCaWGQRjKoG-p6BsymI6RpmnBMis7w5Vq2h6okSMbQXZy5EKOapRD1wDnF-jTae8-hh8LpKwnlyx4b2YoJ2vWFDycsZYW6ZeT1MaQUoRR72N5PB40JfqIWe_0_5j1EbMmQhfMZfjDs8_Sl_a_0b9ci2BzEkD59slB1Mk6mC0MLhY8egjuJT6_AQUzl6M</recordid><startdate>202009</startdate><enddate>202009</enddate><creator>Nguyen, Tin-Quoc</creator><creator>Traberg, Marie Sand</creator><creator>Olesen, Jacob Bjerring</creator><creator>Heerwagen, Søren Thorup</creator><creator>Brandt, Andreas Hjelm</creator><creator>Bechsgaard, Thor</creator><creator>Pedersen, Brian Lindegaard</creator><creator>Moshavegh, Ramin</creator><creator>Lönn, Lars</creator><creator>Jensen, Jørgen Arendt</creator><creator>Nielsen, Michael Bachmann</creator><creator>Hansen, Kristoffer Lindskov</creator><general>Elsevier Inc</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>202009</creationdate><title>Flow Complexity Estimation in Dysfunctional Arteriovenous Dialysis Fistulas using Vector Flow Imaging</title><author>Nguyen, Tin-Quoc ; Traberg, Marie Sand ; Olesen, Jacob Bjerring ; Heerwagen, Søren Thorup ; Brandt, Andreas Hjelm ; Bechsgaard, Thor ; Pedersen, Brian Lindegaard ; Moshavegh, Ramin ; Lönn, Lars ; Jensen, Jørgen Arendt ; Nielsen, Michael Bachmann ; Hansen, Kristoffer Lindskov</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c432t-d9599dd5a12eb715b40da820447ec2c68a39947be1a6f2fe686f356f9f6d84e33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Arteriovenous dialysis fistula</topic><topic>Digital subtraction angiography</topic><topic>Flow complexity</topic><topic>Patient study</topic><topic>Phantom study</topic><topic>Spectral Doppler ultrasound</topic><topic>Stenosis assessment</topic><topic>Vector flow imaging</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Nguyen, Tin-Quoc</creatorcontrib><creatorcontrib>Traberg, Marie Sand</creatorcontrib><creatorcontrib>Olesen, Jacob Bjerring</creatorcontrib><creatorcontrib>Heerwagen, Søren Thorup</creatorcontrib><creatorcontrib>Brandt, Andreas Hjelm</creatorcontrib><creatorcontrib>Bechsgaard, Thor</creatorcontrib><creatorcontrib>Pedersen, Brian Lindegaard</creatorcontrib><creatorcontrib>Moshavegh, Ramin</creatorcontrib><creatorcontrib>Lönn, Lars</creatorcontrib><creatorcontrib>Jensen, Jørgen Arendt</creatorcontrib><creatorcontrib>Nielsen, Michael Bachmann</creatorcontrib><creatorcontrib>Hansen, Kristoffer Lindskov</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Ultrasound in medicine & biology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Nguyen, Tin-Quoc</au><au>Traberg, Marie Sand</au><au>Olesen, Jacob Bjerring</au><au>Heerwagen, Søren Thorup</au><au>Brandt, Andreas Hjelm</au><au>Bechsgaard, Thor</au><au>Pedersen, Brian Lindegaard</au><au>Moshavegh, Ramin</au><au>Lönn, Lars</au><au>Jensen, Jørgen Arendt</au><au>Nielsen, Michael Bachmann</au><au>Hansen, Kristoffer Lindskov</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Flow Complexity Estimation in Dysfunctional Arteriovenous Dialysis Fistulas using Vector Flow Imaging</atitle><jtitle>Ultrasound in medicine & biology</jtitle><addtitle>Ultrasound Med Biol</addtitle><date>2020-09</date><risdate>2020</risdate><volume>46</volume><issue>9</issue><spage>2493</spage><epage>2504</epage><pages>2493-2504</pages><issn>0301-5629</issn><eissn>1879-291X</eissn><abstract>Non-invasive assessment is preferred for monitoring arteriovenous dialysis fistulas (AVFs). Vector concentration assesses flow complexity, which may correlate with stenosis severity. We determined whether vector concentration could assess stenosis severity in dysfunctional AVFs. Vector concentration was estimated in four stenotic phantoms at different pulse repetition frequencies. Spectral Doppler peak velocity and vector concentration were measured in 12 patients with dysfunctional AVFs. Additionally, 5 patients underwent digital subtraction angiography (DSA). In phantoms, vector concentration exhibited an inverse relationship with stenosis severity and was less affected by aliasing in severe stenoses. In nine stenoses of 5 patients undergoing DSA, vector concentration correlated strongly with stenosis severity (first stenosis: r = –0.73, p = 0.04; other stenoses; r = –0.69, p = 0.02) and mid-stenotic diameter (first stenosis: r = 0.87, p = 0.006; other stenoses: r = 0.70, p = 0.02) as opposed to peak velocities (p > 0.05). 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| subjects | Arteriovenous dialysis fistula Digital subtraction angiography Flow complexity Patient study Phantom study Spectral Doppler ultrasound Stenosis assessment Vector flow imaging |
| title | Flow Complexity Estimation in Dysfunctional Arteriovenous Dialysis Fistulas using Vector Flow Imaging |
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