Left Ventricular Torsion Obtained Using Equilibrated Warping in Patients with Repaired Tetralogy of Fallot

Abstract

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Quantification of left ventricular strain and torsion by joint analysis of 3D tagging and cine MR images

“…The finite element model (FEM)-based registration technique used in this study has already been tested and validated both on in-vivo (Genet et al, 2018) and synthetic MR images (Berberoğlu et al, 2019), and also for the LV torsion quantification in case of impaired LV function (Castellanos et al, 2021). We further demonstrated that limitations of radial strain quantification from 3DTAG images can be related to limited spatial resolution and signal-to-noise ratio (SNR) (Berberoğlu et al, 2021).…”

Time‐Synchronization of Interventional Cardiovascular Magnetic Resonance Data Using a Biomechanical Model for Pressure‐Volume Loop Analysis

“…Temporal resolution was ~30 msec in both groups and all acquisitions. A motion tracking algorithm 5 was used to obtain timevs.-volume signals from cardiac MRI.…”

Reduced left ventricular dynamics modeling based on a cylindrical assumption

“…It is key to ventricular function, notably in the intricate temporal coupling between, on the one hand, twisting and ejection, and, on the other hand between untwisting and filling 18,19 . It may also serve as an early indicator for various cardiac diseases and conditions 20,21 . In practice, twist can be extracted from MRI or US imaging, 19,22 through motion tracking/image registration 23,24 …”

“…It is key to ventricular function, notably in the intricate temporal coupling between, on the one hand, twisting and ejection, and, on the other hand between untwisting and filling [Rademakers et al 1992;Sengupta, Tajik, Chandrasekaran, & Khandheria 2008]. It may also serve as an early indicator for various cardiac diseases and conditions [Castellanos et al 2021;Wang, Khoury, Yue, Torre-Amione, & Nagueh 2008]. In practice, twist can be extracted from MRI or US imaging [Sengupta et al 2008;Young & Cowan 2012], through motion tracking/image registration [Berberoğlu, Stoeck, Kozerke, & Genet 2022;Genet, Stoeck, von Deuster, Lee, & Kozerke 2018].…”

“…18,19 It may also serve as an early indicator for various cardiac diseases and conditions. 20,21 In practice, twist can be extracted from MRI or US imaging, 19,22 through motion tracking/image registration. 23,24 Reduced models based on cylindrical geometry and kinematics have thus been proposed in the literature.…”