Search: L773:1873 4030 OR L773:1350 4533 >
Is aortic wall shea...
Is aortic wall shear stress affected by aging? An image-based numerical study with two age groups
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- Lantz, Jonas (author)
- Linköpings universitet,Avdelningen för kardiovaskulär medicin,Tekniska fakulteten,Swedish E Science Research Centre SeRC, Sweden
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- Renner, Johan (author)
- Linköpings universitet,Mekanisk värmeteori och strömningslära,Tekniska fakulteten,Centrum för medicinsk bildvetenskap och visualisering, CMIV
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- Länne, Toste (author)
- Östergötlands Läns Landsting,Linköpings universitet,Avdelningen för kardiovaskulär medicin,Medicinska fakulteten,Centrum för medicinsk bildvetenskap och visualisering, CMIV,Thorax-kärlkliniken i Östergötland
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- Karlsson, Matts (author)
- Linköpings universitet,Mekanisk värmeteori och strömningslära,Tekniska fakulteten,Centrum för medicinsk bildvetenskap och visualisering, CMIV
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(creator_code:org_t)
- Elsevier, 2015
- 2015
- English.
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In: Medical Engineering and Physics. - : Elsevier. - 1350-4533 .- 1873-4030. ; 37:3, s. 265-271
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
Close
- The size of the larger arteries increases during the entire life, but not much is known about how the change in size affects the blood flow. This study compares the flow field in a group of young males (N = 10, age = 23.5 +/- 1.4), with a group of older males (N = 8, age = 58.0 +/- 2.8). Aortic geometries were obtained by magnetic resonance imaging, and the aortic blood flow field was computed using computational fluid dynamics. The aortic wall shear stress was obtained from the computations, and it was concluded that time-averaged wall shear stress decreased with increased age, probably as a consequence of increased aortic diameter and decreased stroke volume, which in turn reduces the shear rates in the aorta. However, the oscillatory shear index, which is a measure of the oscillatory nature of the wall shear stress vector, seemed to be unaffected by aging.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine (hsv//eng)
Keyword
- Aorta; Wall shear stress; Oscillatory shear index; Computational fluid dynamics; Aging; Magnetic resonance imaging
Publication and Content Type
- ref (subject category)
- art (subject category)
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