Matches in SemOpenAlex for { <https://semopenalex.org/work/W2415113466> ?p ?o ?g. }
Showing items 1 to 74 of
74
with 100 items per page.
- W2415113466 endingPage "94" @default.
- W2415113466 startingPage "89" @default.
- W2415113466 abstract "To examine the geometry of the proximal isovelocity surface area (PISA) envelope and its associated isotach, and to evaluate the accuracy of two models of calculating volumetric flow by using the PISA technique.A new model for determining isotach geometry from the PISA envelope was developed and tested in an in vitro simulation.Echocardiography Laboratory, Hotel Dieu Hospital, Kingston, Ontario.PISA envelopes were visualized using an in vitro flow simulator with a series of sharp-edged orifices (2.5 to 16 mm diameter) at a range of flow rates (10 to 110 mL/s).Flow calculations based on the traditional hemispherical geometric assumption for the isotach and the new model were made and compared with measured flow rates.The hemispherical model systematically and significantly underestimated flow. The nonhemispherical model, which requires measurement of both the height (a) and lateral width (2d) of the PISA envelope, provided improved estimates of flow.The nonhemispherical model provides a better estimate of flow through an orifice. Flow rate Q can be calculated directly from the size of the PISA envelope and the aliasing velocity (VA) by using the relationship Q = (3.14d2 + 5.97da + 1.37a2)VA or can be read from a nomogram." @default.
- W2415113466 created "2016-06-24" @default.
- W2415113466 creator A5015609189 @default.
- W2415113466 creator A5018854152 @default.
- W2415113466 creator A5039148762 @default.
- W2415113466 creator A5071948312 @default.
- W2415113466 creator A5074391371 @default.
- W2415113466 date "1999-01-01" @default.
- W2415113466 modified "2023-09-26" @default.
- W2415113466 title "In vitro analysis of colour Doppler flow with the use of proximal isovelocity surface area: improved flow estimates using a nonhemispherical model." @default.
- W2415113466 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/10024864" @default.
- W2415113466 hasPublicationYear "1999" @default.
- W2415113466 type Work @default.
- W2415113466 sameAs 2415113466 @default.
- W2415113466 citedByCount "2" @default.
- W2415113466 crossrefType "journal-article" @default.
- W2415113466 hasAuthorship W2415113466A5015609189 @default.
- W2415113466 hasAuthorship W2415113466A5018854152 @default.
- W2415113466 hasAuthorship W2415113466A5039148762 @default.
- W2415113466 hasAuthorship W2415113466A5071948312 @default.
- W2415113466 hasAuthorship W2415113466A5074391371 @default.
- W2415113466 hasConcept C105702510 @default.
- W2415113466 hasConcept C121332964 @default.
- W2415113466 hasConcept C126322002 @default.
- W2415113466 hasConcept C159985019 @default.
- W2415113466 hasConcept C172120300 @default.
- W2415113466 hasConcept C192562407 @default.
- W2415113466 hasConcept C194242075 @default.
- W2415113466 hasConcept C204323151 @default.
- W2415113466 hasConcept C34626388 @default.
- W2415113466 hasConcept C38349280 @default.
- W2415113466 hasConcept C41008148 @default.
- W2415113466 hasConcept C554190296 @default.
- W2415113466 hasConcept C57879066 @default.
- W2415113466 hasConcept C65155139 @default.
- W2415113466 hasConcept C71924100 @default.
- W2415113466 hasConcept C76155785 @default.
- W2415113466 hasConceptScore W2415113466C105702510 @default.
- W2415113466 hasConceptScore W2415113466C121332964 @default.
- W2415113466 hasConceptScore W2415113466C126322002 @default.
- W2415113466 hasConceptScore W2415113466C159985019 @default.
- W2415113466 hasConceptScore W2415113466C172120300 @default.
- W2415113466 hasConceptScore W2415113466C192562407 @default.
- W2415113466 hasConceptScore W2415113466C194242075 @default.
- W2415113466 hasConceptScore W2415113466C204323151 @default.
- W2415113466 hasConceptScore W2415113466C34626388 @default.
- W2415113466 hasConceptScore W2415113466C38349280 @default.
- W2415113466 hasConceptScore W2415113466C41008148 @default.
- W2415113466 hasConceptScore W2415113466C554190296 @default.
- W2415113466 hasConceptScore W2415113466C57879066 @default.
- W2415113466 hasConceptScore W2415113466C65155139 @default.
- W2415113466 hasConceptScore W2415113466C71924100 @default.
- W2415113466 hasConceptScore W2415113466C76155785 @default.
- W2415113466 hasIssue "1" @default.
- W2415113466 hasLocation W24151134661 @default.
- W2415113466 hasOpenAccess W2415113466 @default.
- W2415113466 hasPrimaryLocation W24151134661 @default.
- W2415113466 hasRelatedWork W1968969605 @default.
- W2415113466 hasRelatedWork W1993505576 @default.
- W2415113466 hasRelatedWork W2026694102 @default.
- W2415113466 hasRelatedWork W2181487807 @default.
- W2415113466 hasRelatedWork W2284468665 @default.
- W2415113466 hasRelatedWork W2354847655 @default.
- W2415113466 hasRelatedWork W2415113466 @default.
- W2415113466 hasRelatedWork W2989570100 @default.
- W2415113466 hasRelatedWork W2989765154 @default.
- W2415113466 hasRelatedWork W3208452963 @default.
- W2415113466 hasVolume "15" @default.
- W2415113466 isParatext "false" @default.
- W2415113466 isRetracted "false" @default.
- W2415113466 magId "2415113466" @default.
- W2415113466 workType "article" @default.