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Automatic Tablet-Based Monoplane Quantification of Stroke Volume and Left Ventricular Ejection Fraction: A Comparative Assessment against Computer-Based Biplane and Monoplane Tools
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  • Frederique Raat,
  • P. Bingley,
  • S. Bouwmeester,
  • S.E.A. Felix,
  • Leon. J. Montenij,
  • Arthur Bouwman
Frederique Raat
Technische Universiteit Eindhoven Faculteit Electrical Engineering

Corresponding Author:[email protected]

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P. Bingley
Technische Universiteit Eindhoven Faculteit Electrical Engineering
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S. Bouwmeester
Catharina Ziekenhuis Afdeling Cardiologie
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S.E.A. Felix
Catharina Ziekenhuis Afdeling Cardiologie
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Leon. J. Montenij
Technische Universiteit Eindhoven Faculteit Electrical Engineering
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Arthur Bouwman
Technische Universiteit Eindhoven Faculteit Electrical Engineering
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Abstract

Purpose: Point-of-care cardiovascular left ventricle ejection fraction (LVEF) quantification is established, but automatic tablet-based stroke volume (SV) quantification with handheld ultrasound devices is unexplored. We evaluated a tablet-based monoplane LVEF and LV volume quantification tool (AutoEF) against a computer-based tool (Tomtec) for LVEF and SV quantification. Methods: Patients underwent handheld ultrasound scans, and LVEF and SV were quantified using AutoEF and computer-based software that utilized either apical four-chamber views (AS-mono) or both apical four-chamber and apical two-chamber views (AS-bi). Correlation and Bland-Altman analysis were used to compare AutoEF with AS-mono and AS-bi. Results: Out of 43 participants, 8 were excluded. AutoEF showed a correlation of 0.83 [0.69:0.91] with AS-mono for LVEF and 0.68 [0.44:0.82] for SV. The correlation with AS-bi was 0.79 [0.62:0.89] for LVEF and 0.66 [0.42:0.81] for SV. The bias between AutoEF and AS-mono was 4.88% [3.15:6.61] for LVEF and 17.46 ml [12.99:21.92] for SV. The limits of agreement (LOA) were [-5.50:15.26]% for LVEF and [-8.02:42.94] ml for SV. The bias between AutoEF and AS-bi was 6.63% [5.31:7.94] for LVEF and 20.62 ml [16.18:25.05] for SV, with LOA of [-1.20:14.47]% for LVEF and [-4.71:45.94] ml for SV. Conclusion: LVEF quantification with AutoEF software was accurate and reliable, but SV quantification showed limitations, indicating non-interchangeability with neither AS-mono nor AS-bi. Further refinement of AutoEF is needed for reliable SV quantification at the point of care.
Submitted to Echocardiography
Submission Checks Completed
Assigned to Editor
Reviewer(s) Assigned
10 Jul 2024Editorial Decision: Revise Minor
16 Jul 20241st Revision Received
26 Jul 2024Submission Checks Completed
26 Jul 2024Assigned to Editor
26 Jul 2024Review(s) Completed, Editorial Evaluation Pending
26 Jul 2024Reviewer(s) Assigned
31 Jul 2024Editorial Decision: Accept