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Evaluation of Left Ventricular Structure and Function using 3D Echocardiography
Published on: October 28, 2020
Clinical evaluation of a fully automated model-based algorithm to calculate left ventricular volumes and ejection
Eduard Ghersin1, Sobhi Abadi, Sergey Yalonetsky
1Department of Diagnostic Imaging, Israel Institute of Technology, Haifa, Israel.
Acute Cardiac Care
|April 28, 2009
Summary
A fully automatic algorithm (FAA) accurately calculates left ventricular volumes and ejection fraction (LVEF) from multidetector computed tomography (MDCT) scans in patients with acute chest pain. This method shows clinical relevance compared to reference standards.
Area of Science:
- Cardiology
- Medical Imaging
- Computational Biology
Background:
- Assessing left ventricular (LV) function is crucial for managing acute chest pain (ACP).
- Traditional methods for calculating LV volumes and ejection fraction (LVEF) can be time-consuming.
- Multidetector computed tomography (MDCT) offers detailed cardiac imaging but requires efficient analysis.
Purpose of the Study:
- To assess the feasibility and accuracy of a fully automatic algorithm (FAA) for LV volume and LVEF calculation using MDCT.
- To compare FAA performance against a reference standard (RS) based on Simpson's method and left ventriculography (LVG).
- To determine the clinical relevance of FAA in patients presenting with ACP.
Main Methods:
- 23 patients with ACP underwent ECG-gated MDCT and LVG.
- LV end-diastolic, end-systolic, and stroke volumes (EDV, ESV, SV) and LVEF were computed using both RS and FAA.
- One patient was excluded due to FAA contour detection failure.
Main Results:
- In 22 patients, FAA-derived LVEF (59±11%) closely correlated with RS (61±11%, r=0.91).
- LVG showed weaker correlation with RS (57±16%, r=0.6).
- FAA demonstrated minor overestimations in EDV, ESV, and SV, and a slight underestimation in LVEF compared to RS, attributed to contour smoothing. LVEF by FAA was within 8% of RS for all but one patient.
Conclusions:
- The evaluated fully automatic algorithm (FAA) provides accurate and clinically relevant measurements of left ventricular volumes and LVEF from MDCT.
- FAA demonstrates superior agreement with the reference standard compared to left ventriculography.
- This automated approach offers a feasible and reliable tool for LV functional assessment in ACP patients.
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