A comparison between QLAB and TomTec full volume reconstruction for real time three-dimensional echocardiographic quantification of left ventricular volumes
| Autor: | Attila Nemes, Robert-Jan van Geuns, Wim B. Vletter, Timo Baks, Osama I.I. Soliman, Ashraf M. Anwar, Tjebbe W. Galema, Folkert J. ten Cate, Marcel L. Geleijnse, Boudewijn J. Krenning |
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| Přispěvatelé: | Cardiology, Radiology & Nuclear Medicine, Cardiothoracic Surgery |
| Rok vydání: | 2007 |
| Předmět: |
Male
medicine.medical_specialty Echocardiography Three-Dimensional Volume analysis Ventricular Dysfunction Left Internal medicine Image Processing Computer-Assisted Medicine Humans Radiology Nuclear Medicine and imaging Sinus rhythm Volume reconstruction Observer Variation Ejection fraction medicine.diagnostic_test business.industry Mean age Magnetic resonance imaging Middle Aged Magnetic Resonance Imaging Cardiology Linear Models Female Cardiology and Cardiovascular Medicine business Observer variation Cardiomyopathies Algorithms |
| Zdroj: | Echocardiography. A Journal of Cardiovascular Ultrasound and Allied Techniqu, 24(9), 967-974. Wiley-Blackwell Publishing Ltd |
| ISSN: | 1540-8175 0742-2822 |
| DOI: | 10.1111/j.1540-8175.2007.00502.x |
| Popis: | OBJECTIVES To compare the interobserver variability and accuracy of two different real time three-dimensional echocardiography (RT3DE) analyzing programs. METHODS Forty-one patients (mean age 56 +/- 11 years, 28 men) in sinus rhythm with a cardiomyopathy and adequate 2D image quality underwent RT3DE and magnetic resonance imaging (MRI) within one day. Off-line left ventricular (LV) volume analysis was performed with QLAB V4.2 (semiautomated border detection with biplane projections) and TomTec 4D LV analysis V2.0 (primarily manual tracking with triplane projections and semiautomated border detection). RESULTS Excellent correlations (R(2) > 0.98) were found between MRI and RT3DE. Bland-Altman analysis revealed an underestimated LV end-diastolic volume (LV-EDV) for both TomTec (-9.4 +/- 8.7 mL) and QLAB (-16.4 +/- 13.1 ml). Also, an underestimated LV end-systolic volume (LV-ESV) for both TomTec (-4.8 +/- 9.9 mL) and QLAB (-8.5 +/- 14.2 mL) was found. LV-EDV and LV-ESV were significantly more underestimated with QLAB software. Both programs accurately calculated LV ejection fraction (LV-EF) without a bias. Interobserver variability was 6.4 +/- 7.8% vs. 12.2 +/- 10.1% for LV-EDV, 7.8 +/- 9.7% vs. 13.6 +/- 11.2% for LV-ESV, and 7.1 +/- 6.9% vs. 9.7 +/- 8.8% for LV-EF for TomTec vs. QLAB, respectively. The analysis time was shorter with QLAB (4 +/- 2 minutes vs. 6 +/- 2 minutes, P < 0.05). CONCLUSIONS RT3DE with TomTec or QLAB software analysis provides accurate LV-EF assessment in cardiomyopathic patients with distorted LV geometry and adequate 2D image quality. However, LV volumes may be somewhat more underestimated with the current QLAB software version. |
| Databáze: | OpenAIRE |
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