Stress-Strain Modeling with MRI
An important index of myocardial function is myocardial stress, reflecting the distribution of forces within the heart wall. Increased stress has been associated with increased oxygen demand , increased blood flow requirement , and ventricular remodeling in hypertrophy and post-infarction [3, 4]. It is a function of both ventricular geometry and cavity pressures. However, currently, there is no reliable way to directly measure stress. Invasive methods for determining stress are unreliable, due to the perturbing effects of the invasive devices used, such as implanted force transducers. Attempts to model the stress distribution within the heart wall have been limited by a lack of sufficient data on the geometry and properties of the heart wall and by the sensitivity of the calculated results to the particular corresponding assumptions made for the values of the missing data.
KeywordsMagnetic Resonance Imaging Conventional Magnetic Resonance Imaging Magnetic Resonance Elastography Heart Wall Magnetic Resonance Imaging Method
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