An @entity1028 is a pathological dilation of the abdominal aorta, which carries a high mortality rate if ruptured. The most commonly used surrogate marker of @entity397 risk is the maximal transverse diameter of the @entity439 . More recent studies suggest that wall stress from models of @entity1 -specific @entity439 geometries extracted, for instance, from computed tomography images may be a more accurate predictor of @entity397 risk and an important factor in AAA size progression. However, quantification of wall stress is typically computationally intensive and time-consuming, mainly due to the nonlinear mechanical behavior of the @entity1028 walls. These difficulties have limited the potential of computational models in clinical practice. To facilitate computation of wall stresses, we propose to use a linear approach that ensures equilibrium of wall stresses in the @entity439 . This proposed linear model approach is easy to implement and eliminates the burden of nonlinear computations. To assess the accuracy of our proposed approach to compute wall stresses, results from idealized and @entity1 -specific model simulations were compared to those obtained using conventional approaches and to those of a hypothetical, reference @entity1028 model. For the reference model, wall mechanical properties and the initial unloaded and unstressed configuration were assumed to be known, and the resulting wall stresses were used as reference for comparison. Our proposed linear approach accurately approximates wall stresses for varying model geometries and wall material properties. Our findings suggest that the proposed linear approach could be used as an effective, efficient, easy-to-use clinical tool to estimate @entity1 -specific wall stresses.

Improving the efficiency of XXXX wall stress computations.

@entity1 :: ('9606', 'Species') :: ['patient'] @entity397 :: ('MESH:D012421', 'Disease') :: ['rupture'] @entity1028 :: ('MESH:D017544', 'Disease') :: ['abdominal aortic aneurysm'] @entity439 :: ('MESH:D000783', 'Disease') :: ['aneurysms', 'aneurysm']
@entity1028 :: (MESH:D017544,Disease) :: ['abdominal aortic aneurysm']
