Correction: Quantitative Assessment of Turbulence and Flow Eccentricity in an Aortic Coarctation: Impact of Virtual Interventions (vol 6, pg 281, 2015)

Andersson, MagnusLinköpings universitet,Mekanisk värmeteori och strömningslära,Tekniska fakulteten,Swedish E Science Research Centre SeRC, Sweden (författare)

Turbulence and flow eccentricity can be measured by magnetic resonance imaging (MRI) and may play an important role in the pathogenesis of numerous cardiovascular diseases. In the present study, we propose quantitative techniques to assess turbulent kinetic energy (TKE) and flow eccentricity that could assist in the evaluation and treatment of stenotic severities. These hemodynamic parameters were studied in a pre-treated aortic coarctation (CoA) and after several virtual interventions using computational fluid dynamics (CFD), to demonstrate the effect of different dilatation options on the flow field. Patient-specific geometry and flow conditions were derived from MRI data. The unsteady pulsatile flow was resolved by large eddy simulation (LES) including non-Newtonian blood rheology. Results showed an inverse asymptotic relationship between the total amount of TKE and degree of dilatation of the stenosis, where the pre-stenotic hypoplastic segment may limit the possible improvement by treating the CoA alone. Spatiotem-poral maps of TKE and flow eccentricity could be linked to the characteristics of the post-stenotic jet, showing a versatile response between the CoA dilatations. By including these flow markers into a combined MRI-CFD intervention framework, CoA therapy has not only the possibility to produce predictions via simulation, but can also be validated pre-and immediate post treatment, as well as during follow-up studies.

TEKNIK OCH TEKNOLOGIER Maskinteknik Teknisk mekanik hsv//swe
ENGINEERING AND TECHNOLOGY Mechanical Engineering Applied Mechanics hsv//eng
Computational fluid dynamics; Large eddy simulation; Turbulent kinetic energy; Flow displacement; Non-Newtonian; Carreau; Virtual treatment; Magnetic resonance imaging

Lantz, JonasLinköpings universitet,Avdelningen för kardiovaskulär medicin,Medicinska fakulteten,Swedish E Science Research Centre SeRC, Sweden(Swepub:liu)jonla63 (författare)
Ebbers, TinoLinköpings universitet,Avdelningen för kardiovaskulär medicin,Medicinska fakulteten,Centrum för medicinsk bildvetenskap och visualisering, CMIV,Region Östergötland, Fysiologiska kliniken US,Swedish E Science Research Centre SeRC, Sweden(Swepub:liu)tineb49 (författare)
Karlsson, MattsLinköpings universitet,Mekanisk värmeteori och strömningslära,Tekniska fakulteten,Centrum för medicinsk bildvetenskap och visualisering, CMIV,Swedish E Science Research Centre SeRC, Sweden(Swepub:liu)matka16 (författare)
Linköpings universitetMekanisk värmeteori och strömningslära (creator_code:org_t)

Ingår i:Cardiovascular Engineering and Technology: SPRINGER6:4, s. 577-5891869-408X1869-4098

Av författaren/redakt...: Andersson, Magnu ...; Lantz, Jonas; Ebbers, Tino; Karlsson, Matts

Om ämnet

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Maskinteknik; och Teknisk mekanik

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