Evaluation of a new 3-dimensional color Doppler flow method to quantify flow across the mitral valve and in the left ventricular outflow tract: An in vitro study

Sumito Kimura, Cole Streiff, Meihua Zhu, Eriko Shimada, Saurabh Datta, Muhammad Ashraf, David Sahn

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Objectives: The aim of this study was to assess the accuracy, feasibility, and reproducibility of determining stroke volume from a novel 3-dimensional (3D) color Doppler flow quantification method for mitral valve (MV) inflow and left ventricular outflow tract (LVOT) outflow at different stroke volumes when compared with the actual flow rate in a pumped porcine cardiac model. Methods: Thirteen freshly harvested pig hearts were studied in a water tank. We inserted a latex balloon into each left ventricle from the MV annulus to the LVOT, which were passively pumped at different stroke volumes (30-80 mL) using a calibrated piston pump at increments of 10 mL. Four-dimensional flow volumes were obtained without electrocardiographic gating. The digital imaging data were analyzed offline using prototype software. Two hemispheric flow-sampling planes for color Doppler velocity measurements were placed at the MV annulus and LVOT. The software computed the flow volumes at the MV annulus and LVOT within the user-defined volume and cardiac cycle. Results: This novel 3D Doppler flow quantification method detected incremental increases in MV inflow and LVOT outflow in close agreement with pumped stroke volumes (MV inflow, r = 0.96; LVOT outflow, r = 0.96; P

Original languageEnglish (US)
Pages (from-to)265-271
Number of pages7
JournalJournal of Ultrasound in Medicine
Volume33
Issue number2
DOIs
StatePublished - Feb 1 2014

Fingerprint

Mitral Valve
Color
Stroke Volume
Swine
Software
Cardiac Volume
Latex
Heart Ventricles
In Vitro Techniques
Water

Keywords

  • 3-dimensional
  • Color Doppler
  • Echocardiography
  • Flow quantification
  • In vitro model

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology
  • Medicine(all)

Cite this

Evaluation of a new 3-dimensional color Doppler flow method to quantify flow across the mitral valve and in the left ventricular outflow tract : An in vitro study. / Kimura, Sumito; Streiff, Cole; Zhu, Meihua; Shimada, Eriko; Datta, Saurabh; Ashraf, Muhammad; Sahn, David.

In: Journal of Ultrasound in Medicine, Vol. 33, No. 2, 01.02.2014, p. 265-271.

Research output: Contribution to journalArticle

Kimura, Sumito ; Streiff, Cole ; Zhu, Meihua ; Shimada, Eriko ; Datta, Saurabh ; Ashraf, Muhammad ; Sahn, David. / Evaluation of a new 3-dimensional color Doppler flow method to quantify flow across the mitral valve and in the left ventricular outflow tract : An in vitro study. In: Journal of Ultrasound in Medicine. 2014 ; Vol. 33, No. 2. pp. 265-271.
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