Quantification of left ventricular deformation fields from undersampled radial, real-time cardiac MRI
نویسندگان
چکیده
منابع مشابه
Quantification of left ventricular deformation fields from undersampled radial, real-time cardiac MRI
Background Regional ventricular elasticity is altered in ischemic heart disease and LV hypertrophy, potentially contributing to and sustaining a ventricular remodeling process. Conventional methods to measure regional ventricular elasticity in preclinical animal models require high fidelity ventricular pressure measurement, sonomicrometry transducers and dynamic modulation of preload. These pro...
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Background Cardiac MRI requires a steady cardiac rhythm for ECGgating, and multiple breath-holds to minimize respiratory artifacts. By employing a non-Cartesian parallel imaging in form of through-time radial GRAPPA [1], accelerated imaging can be performed with temporal resolutions of < 50 ms, obviating the need for gating or breath-holding. breath-holding. We tested the hypothesis that volume...
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Background Vortical blood flow patterns (vortices) play a fundamental role in normal physiology of cardiac function in achieving the proper balance between blood flow and stress on surrounding structures and preventing blood stagnation. These patterns develop and evolve inside the cardiac atria and ventricles as a result of asymmetric chamber geometry. However, because of the complex geometry a...
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A previously proposed nonlinear inverse reconstruction for autocalibrated parallel imaging simultaneously estimates coil sensitivities and image content. This work exploits this property for real-time MRI, where coil sensitivities need to be dynamically adapted to the conditions generated by moving objects. The development comprises (i) an extension of the nonlinear inverse algorithm to non-Car...
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BACKGROUND Real-time 3D echocardiographic (RT3DE) data sets contain dynamic volumetric information on cardiac function. However, quantification of left ventricular (LV) function from 3D echocardiographic data is performed on cut-planes extracted from the 3D data sets and thus does not fully exploit the volumetric information. Accordingly, we developed a volumetric analysis technique aimed at qu...
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ژورنال
عنوان ژورنال: Journal of Cardiovascular Magnetic Resonance
سال: 2014
ISSN: 1532-429X
DOI: 10.1186/1532-429x-16-s1-p366