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- W3127874981 abstract "The ability to evaluate the viscoelastic properties of coronary arteries is crucial for identifying mechanically unstable atherosclerotic plaques. Here, we demonstrate for the first time in living swine, the capability of intravascular laser speckle imaging (ILSI) to measure an index of coronary plaque viscoelasticity, τ, using a human coronary to swine xenograft model. Cardiac motion effects are evaluated by comparing the EKG-non-gated <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline> <mml:mrow class=MJX-TeXAtom-ORD> <mml:msub> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mover> <mml:mi>τ<!-- τ --></mml:mi> <mml:mo stretchy=false>¯<!-- ¯ --></mml:mo> </mml:mover> </mml:mrow> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mi>N</mml:mi> <mml:mi>G</mml:mi> </mml:mrow> </mml:msub> </mml:mrow> </mml:math> , and EKG-gated <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline> <mml:mrow class=MJX-TeXAtom-ORD> <mml:msub> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mover> <mml:mi>τ<!-- τ --></mml:mi> <mml:mo stretchy=false>¯<!-- ¯ --></mml:mo> </mml:mover> </mml:mrow> <mml:mi>G</mml:mi> </mml:msub> </mml:mrow> </mml:math> among different plaque types. Results show that both <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline> <mml:mrow class=MJX-TeXAtom-ORD> <mml:msub> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mover> <mml:mi>τ<!-- τ --></mml:mi> <mml:mo stretchy=false>¯<!-- ¯ --></mml:mo> </mml:mover> </mml:mrow> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mi>N</mml:mi> <mml:mi>G</mml:mi> </mml:mrow> </mml:msub> </mml:mrow> </mml:math> and <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline> <mml:mrow class=MJX-TeXAtom-ORD> <mml:msub> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mover> <mml:mi>τ<!-- τ --></mml:mi> <mml:mo stretchy=false>¯<!-- ¯ --></mml:mo> </mml:mover> </mml:mrow> <mml:mi>G</mml:mi> </mml:msub> </mml:mrow> </mml:math> are significantly lower in necrotic-core plaques compared with stable lesions. Discrete-point pullback measurements demonstrate the capability of ILSI for rapid mechanical characterization of coronary segments under physiological conditions, in-vivo ." @default.
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- W3127874981 date "2021-03-16" @default.
- W3127874981 modified "2023-10-14" @default.
- W3127874981 title "In-vivo mechanical characterization of coronary atherosclerotic plaques in living swine using intravascular laser speckle imaging" @default.
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- W3127874981 doi "https://doi.org/10.1364/boe.418939" @default.
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