Proof of concept: Comparative accuracy of semiautomated VR modeling for volumetric analysis of the heart ventricles
David Yogev,
Shai Tejman-Yarden,
Omer Feinberg,
Yisrael Parmet,
Tomer Goldberg,
Shay Illouz,
Netanel Nagar,
Dor Freidin,
Oliana Vazgovsky,
Sumit Chatterji,
Yishay Salem,
Uriel Katz,
Orly Goitein
Affiliations
David Yogev
The Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; The Engineering Medical Research Lab, Sheba Medical Center, Ramat Gan, Israel
Shai Tejman-Yarden
The Engineering Medical Research Lab, Sheba Medical Center, Ramat Gan, Israel; The Edmond J. Safra International Congenital Heart Center, Sheba Medical Center, Ramat Gan, Israel; Corresponding author.
Omer Feinberg
The Engineering Medical Research Lab, Sheba Medical Center, Ramat Gan, Israel
Yisrael Parmet
Department of Industrial Engineering and Management, Ben Gurion University, Beer Sheva, Israel
Tomer Goldberg
The Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
Shay Illouz
The Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; The Engineering Medical Research Lab, Sheba Medical Center, Ramat Gan, Israel
Netanel Nagar
The Engineering Medical Research Lab, Sheba Medical Center, Ramat Gan, Israel; Industrial Design Department, Bezalel Academy of Art and Design, Jerusalem, Israel
Dor Freidin
The Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; The Engineering Medical Research Lab, Sheba Medical Center, Ramat Gan, Israel
Oliana Vazgovsky
The Engineering Medical Research Lab, Sheba Medical Center, Ramat Gan, Israel; The Edmond J. Safra International Congenital Heart Center, Sheba Medical Center, Ramat Gan, Israel
Sumit Chatterji
The Pulmonology Unit, Sheba Medical Center, Ramat Gan, Israel; Interventional Pulmonology Unit, Sheba Medical Center, Ramat Gan, Israel
Yishay Salem
The Edmond J. Safra International Congenital Heart Center, Sheba Medical Center, Ramat Gan, Israel; The Leviev Heart Institute, Sheba Medical Center, Ramat Gan, Israel
Uriel Katz
The Edmond J. Safra International Congenital Heart Center, Sheba Medical Center, Ramat Gan, Israel; The Leviev Heart Institute, Sheba Medical Center, Ramat Gan, Israel
Orly Goitein
Department of Diagnostic Imaging, Sheba Medical Center, Ramat Gan, Israel
Introduction: Simpson's rule is generally used to estimate cardiac volumes. By contrast, modern methods such as Virtual Reality (VR) utilize mesh modeling to present the object's surface spatial structure, thus enabling intricate volumetric calculations. In this study, two types of semiautomated VR models for cardiac volumetric analysis were compared to the standard Philips dedicated cardiac imaging platform (PDP) which is based on Simpson's rule calculations. Methods: This retrospective report examined the cardiac computed tomography angiography (CCTA) of twenty patients with atrial fibrillation obtained prior to a left atrial appendage occlusion procedure. We employed two VR models to evaluate each CCTA and compared them to the PDP: a VR model with Philips-similar segmentations (VR-PS) that included the trabeculae and the papillary muscles within the luminal volume, and a VR model that only included the inner blood pool (VR-IBP). Results: Comparison of the VR-PS and the PDP left ventricle (LV) volumes demonstrated excellent correlation with a ρc of 0.983 (95% CI 0.96, 0.99), and a small mean difference and range. The calculated volumes of the right ventricle (RV) had a somewhat lower correlation of 0.89 (95% CI 0.781, 0.95), a small mean difference, and a broader range. The VR-IBP chamber size estimations were significantly smaller than the estimates based on the PDP. Discussion: Simpson's rule and polygon summation algorithms produce similar results in normal morphological LVs. However, this correlation failed to emerge when applied to RVs and irregular chambers. Conclusions: The findings suggest that the polygon summation method is preferable for RV and irregular LV volume and function calculations.
