Key result
Wall shear stress estimates from laminar boundary layer theory agreed well with Navier Stokes equation solutions for steady and pulsatile flow in coronary artery constrictions.
Laminar boundary layer theory provides a relatively simple method for in vivo estimates of wall shear stress in coronary constrictions using angiogram-derived vessel shape and flow rate.
Supports simpler wall shear stress estimates from angiograms; leaves open prospective validation before clinical use.
Wall shear stress estimates from laminar boundary layer theory were found to agree fairly well with the magnitude of shear stress levels along coronary artery constrictions obtained from solutions of the Navier Stokes equations for both steady and pulsatile flow. The relatively simple method can be used for in vivo estimates of wall shear stress in constrictions by using a vessel shape function determined from a coronary angiogram, along with a knowledge of the flow rate.
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Back et al. (1992) studied Coronary artery constrictions. Laminar boundary layer theory for wall shear stress estimation vs. Solutions of the Navier Stokes equations was evaluated on Agreement of wall shear stress estimates. Wall shear stress estimates from laminar boundary layer theory agreed well with Navier Stokes equation solutions for steady and pulsatile flow in coronary artery constrictions.
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