A new approach to the noninvasive measurement of cardiac output using an annular array doppler technique—II. practical implementation and results
An experimental Doppler flowmeter system has been developed which can noninvasively measure blood flow volume rate in a vessel. It is based on the attenuation compensated technique and does not require knowledge of the vessel size or beam-vessel angle. In vitro results have shown that the measuremen...
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| Veröffentlicht in: | Ultrasound in medicine & biology 1989, Vol.15 (3), p.179-187 |
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| creator | Evans, J.M. Skidmore, R. Baker, J.D. Wells, P.N.T. |
| description | An experimental Doppler flowmeter system has been developed which can noninvasively measure blood flow volume rate in a vessel. It is based on the attenuation compensated technique and does not require knowledge of the vessel size or beam-vessel angle.
In vitro results have shown that the measurement of volume flow rate is independent of vessel angle to within ±4%, and independent of vessel diameter to within ±5%. Flow rate linearity is better than ±3%. A good comparison has been obtained,
in vivo, of aortic diameters measured by an imaging system and with this flowmeter; the r value was 0.98. The noninvasive measurement of cardiac output using this flowmeter has been compared with conventional dilution techniques in 54 patients, with a resulting correlation coefficient of
r = 0.96. |
| doi_str_mv | 10.1016/0301-5629(89)90062-8 |
| format | Article |
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In vitro results have shown that the measurement of volume flow rate is independent of vessel angle to within ±4%, and independent of vessel diameter to within ±5%. Flow rate linearity is better than ±3%. A good comparison has been obtained,
in vivo, of aortic diameters measured by an imaging system and with this flowmeter; the r value was 0.98. The noninvasive measurement of cardiac output using this flowmeter has been compared with conventional dilution techniques in 54 patients, with a resulting correlation coefficient of
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In vitro results have shown that the measurement of volume flow rate is independent of vessel angle to within ±4%, and independent of vessel diameter to within ±5%. Flow rate linearity is better than ±3%. A good comparison has been obtained,
in vivo, of aortic diameters measured by an imaging system and with this flowmeter; the r value was 0.98. The noninvasive measurement of cardiac output using this flowmeter has been compared with conventional dilution techniques in 54 patients, with a resulting correlation coefficient of
r = 0.96.</description><subject>Annular array</subject><subject>Aorta - anatomy & histology</subject><subject>Aorta - physiology</subject><subject>Biological and medical sciences</subject><subject>Blood Flow Velocity</subject><subject>Blood Vessels - anatomy & histology</subject><subject>Cardiac Output</subject><subject>Cardiovascular system</subject><subject>Doppler ultrasound</subject><subject>Humans</subject><subject>Indicator Dilution Techniques</subject><subject>Investigative techniques, diagnostic techniques (general aspects)</subject><subject>Medical sciences</subject><subject>Models, Structural</subject><subject>Rheology</subject><subject>Ultrasonic investigative techniques</subject><subject>Ultrasonics</subject><subject>Ultrasonography - instrumentation</subject><subject>Ultrasonography - methods</subject><subject>Volume flowmeter</subject><issn>0301-5629</issn><issn>1879-291X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1989</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkc2KFDEUhQtRxp7RN1DIQmRc1JifqkpqMzAM_jQMuFFwF26lbtmRqqRMUi2z8x30CX0SU3bTS4VAFvc7h3vPKYpnjF4xyprXVFBW1g1vL1X7qqW04aV6UGyYkm3JW_b5YbE5IY-L8xi_UkplI-RZccZrXivBNsXPG-LwO4F5Dh7MjiRP0g6J8866PUS7RzIhxCXghC4RPxADobdgiF_SvCSyROu-EHD5uWWEQCAEuCe9n-cRA0lods5-W_D3j1_b7RWZA5hkDYzEThlYTSFZv8p7EjAuY4pPikcDjBGfHv-L4tPbNx9v35d3H95tb2_uSiMETyUAFwCK0kFBV2PTqV7QoVYoheLU0Ao6bOremAF43XVVbxrJhooPgCynwMRF8fLgm2_PG8akJxsNjiM49EvUsqVSsar6L8hr0bSSywxWB9AEH2PAQc_BThDuNaN6LU2vjei1Ea1a_bc0rbLs-dF_6SbsT6JjS3n-4jiHmKMbAjhj4wmTXDDViIxdHzDMoe0tBh2NRWewtwFN0r23_97jD17ut4s</recordid><startdate>1989</startdate><enddate>1989</enddate><creator>Evans, J.M.</creator><creator>Skidmore, R.</creator><creator>Baker, J.D.</creator><creator>Wells, P.N.T.</creator><general>Elsevier Inc</general><general>Elsevier</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>8FD</scope><scope>L7M</scope><scope>7X8</scope></search><sort><creationdate>1989</creationdate><title>A new approach to the noninvasive measurement of cardiac output using an annular array doppler technique—II. practical implementation and results</title><author>Evans, J.M. ; Skidmore, R. ; Baker, J.D. ; Wells, P.N.T.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c332t-aa23aa800f8ab5e6b8d30f58e73820c04abe65dccfa25bb4dc671f42fae163713</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1989</creationdate><topic>Annular array</topic><topic>Aorta - anatomy & histology</topic><topic>Aorta - physiology</topic><topic>Biological and medical sciences</topic><topic>Blood Flow Velocity</topic><topic>Blood Vessels - anatomy & histology</topic><topic>Cardiac Output</topic><topic>Cardiovascular system</topic><topic>Doppler ultrasound</topic><topic>Humans</topic><topic>Indicator Dilution Techniques</topic><topic>Investigative techniques, diagnostic techniques (general aspects)</topic><topic>Medical sciences</topic><topic>Models, Structural</topic><topic>Rheology</topic><topic>Ultrasonic investigative techniques</topic><topic>Ultrasonics</topic><topic>Ultrasonography - instrumentation</topic><topic>Ultrasonography - methods</topic><topic>Volume flowmeter</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Evans, J.M.</creatorcontrib><creatorcontrib>Skidmore, R.</creatorcontrib><creatorcontrib>Baker, J.D.</creatorcontrib><creatorcontrib>Wells, P.N.T.</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>MEDLINE - Academic</collection><jtitle>Ultrasound in medicine & biology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Evans, J.M.</au><au>Skidmore, R.</au><au>Baker, J.D.</au><au>Wells, P.N.T.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A new approach to the noninvasive measurement of cardiac output using an annular array doppler technique—II. practical implementation and results</atitle><jtitle>Ultrasound in medicine & biology</jtitle><addtitle>Ultrasound Med Biol</addtitle><date>1989</date><risdate>1989</risdate><volume>15</volume><issue>3</issue><spage>179</spage><epage>187</epage><pages>179-187</pages><issn>0301-5629</issn><eissn>1879-291X</eissn><coden>USMBA3</coden><abstract>An experimental Doppler flowmeter system has been developed which can noninvasively measure blood flow volume rate in a vessel. It is based on the attenuation compensated technique and does not require knowledge of the vessel size or beam-vessel angle.
In vitro results have shown that the measurement of volume flow rate is independent of vessel angle to within ±4%, and independent of vessel diameter to within ±5%. Flow rate linearity is better than ±3%. A good comparison has been obtained,
in vivo, of aortic diameters measured by an imaging system and with this flowmeter; the r value was 0.98. The noninvasive measurement of cardiac output using this flowmeter has been compared with conventional dilution techniques in 54 patients, with a resulting correlation coefficient of
r = 0.96.</abstract><cop>Amsterdam</cop><pub>Elsevier Inc</pub><pmid>2525831</pmid><doi>10.1016/0301-5629(89)90062-8</doi><tpages>9</tpages></addata></record> |
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| ispartof | Ultrasound in medicine & biology, 1989, Vol.15 (3), p.179-187 |
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| language | eng |
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| source | MEDLINE; Elsevier ScienceDirect Journals |
| subjects | Annular array Aorta - anatomy & histology Aorta - physiology Biological and medical sciences Blood Flow Velocity Blood Vessels - anatomy & histology Cardiac Output Cardiovascular system Doppler ultrasound Humans Indicator Dilution Techniques Investigative techniques, diagnostic techniques (general aspects) Medical sciences Models, Structural Rheology Ultrasonic investigative techniques Ultrasonics Ultrasonography - instrumentation Ultrasonography - methods Volume flowmeter |
| title | A new approach to the noninvasive measurement of cardiac output using an annular array doppler technique—II. practical implementation and results |
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