Laser speckle contrast imaging (LSCI) is applied in various biomedical applications for full -field characterization of blood flow and tissue perfusion. The accuracy of the contrast interpretation and its conversion to the blood flow index depends on specific parameters of the optical system and scattering media. One such parameter is the polarisation of detected light, which is often adjusted to minimize specular reflections and image artefacts. The polarisation's effect on the detected light scattering dynamics and, therefore, the accuracy of LSCI data interpretation requires more detailed investigation. In this study, we used LSCI and Dynamic Light Scattering Imaging to evaluate the effects of the detected light polarisation when imaging perfusion in the mouse cortex. We found that cross -polarisation results in a shorter decorrelation time constant, a higher coherence degree and stronger dynamic scattering compared to the parallel -polarisation or no-polariser configurations. These results support the cross -polarisation configuration as the most optimal for brain cortex imaging and suggest against direct or calibrated comparisons between the contrast recordings made with different polarisation configurations. (c) 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
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Washington Univ, Dept Biomed Engn, St Louis, MO 63110 USAWashington Univ, Dept Biomed Engn, St Louis, MO 63110 USA
Bergonzi, Karla M.
Bauer, Adam Q.
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Washington Univ, Dept Radiol, St Louis, MO 63110 USAWashington Univ, Dept Biomed Engn, St Louis, MO 63110 USA
Bauer, Adam Q.
Wright, Patrick W.
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Washington Univ, Dept Biomed Engn, St Louis, MO 63110 USAWashington Univ, Dept Biomed Engn, St Louis, MO 63110 USA
Wright, Patrick W.
Culver, Joseph P.
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Washington Univ, Dept Biomed Engn, St Louis, MO 63110 USA
Washington Univ, Dept Radiol, St Louis, MO 63110 USA
Washington Univ, Dept Phys, St Louis, MO 63130 USAWashington Univ, Dept Biomed Engn, St Louis, MO 63110 USA
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Harvard Med Sch, Massachusetts Gen Hosp, Dept Radiol, MGH HST Athinoula A Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USAHarvard Med Sch, Massachusetts Gen Hosp, Dept Radiol, MGH HST Athinoula A Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USA
Boas, David A.
Sakadzic, Sava
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Harvard Med Sch, Massachusetts Gen Hosp, Dept Radiol, MGH HST Athinoula A Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USAHarvard Med Sch, Massachusetts Gen Hosp, Dept Radiol, MGH HST Athinoula A Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USA
Sakadzic, Sava
Selb, Juliette
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Harvard Med Sch, Massachusetts Gen Hosp, Dept Radiol, MGH HST Athinoula A Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USAHarvard Med Sch, Massachusetts Gen Hosp, Dept Radiol, MGH HST Athinoula A Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USA
Selb, Juliette
Farzam, Parisa
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Harvard Med Sch, Massachusetts Gen Hosp, Dept Radiol, MGH HST Athinoula A Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USAHarvard Med Sch, Massachusetts Gen Hosp, Dept Radiol, MGH HST Athinoula A Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USA
Farzam, Parisa
Franceschini, Maria Angela
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Harvard Med Sch, Massachusetts Gen Hosp, Dept Radiol, MGH HST Athinoula A Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USAHarvard Med Sch, Massachusetts Gen Hosp, Dept Radiol, MGH HST Athinoula A Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USA
Franceschini, Maria Angela
Carp, Stefan A.
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Harvard Med Sch, Massachusetts Gen Hosp, Dept Radiol, MGH HST Athinoula A Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USAHarvard Med Sch, Massachusetts Gen Hosp, Dept Radiol, MGH HST Athinoula A Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USA
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Harvard Univ, Sch Med, Massachusetts Gen Hosp, Anthinoula A Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USAHarvard Univ, Sch Med, Massachusetts Gen Hosp, Anthinoula A Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USA
Boas, David A.
Dunn, Andrew K.
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Univ Texas Austin, Dept Biomed Engn, Austin, TX 78712 USAHarvard Univ, Sch Med, Massachusetts Gen Hosp, Anthinoula A Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USA
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Washington Univ, Dept Biomed Engn, St Louis, MO 63110 USAWashington Univ, Dept Biomed Engn, St Louis, MO 63110 USA
Bergonzi, Karla M.
Bauer, Adam Q.
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Washington Univ, Dept Radiol, St Louis, MO 63110 USAWashington Univ, Dept Biomed Engn, St Louis, MO 63110 USA
Bauer, Adam Q.
Wright, Patrick W.
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Washington Univ, Dept Biomed Engn, St Louis, MO 63110 USAWashington Univ, Dept Biomed Engn, St Louis, MO 63110 USA
Wright, Patrick W.
Culver, Joseph P.
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Washington Univ, Dept Biomed Engn, St Louis, MO 63110 USA
Washington Univ, Dept Radiol, St Louis, MO 63110 USA
Washington Univ, Dept Phys, St Louis, MO 63130 USAWashington Univ, Dept Biomed Engn, St Louis, MO 63110 USA
机构:
Harvard Med Sch, Massachusetts Gen Hosp, Dept Radiol, MGH HST Athinoula A Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USAHarvard Med Sch, Massachusetts Gen Hosp, Dept Radiol, MGH HST Athinoula A Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USA
Boas, David A.
Sakadzic, Sava
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Harvard Med Sch, Massachusetts Gen Hosp, Dept Radiol, MGH HST Athinoula A Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USAHarvard Med Sch, Massachusetts Gen Hosp, Dept Radiol, MGH HST Athinoula A Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USA
Sakadzic, Sava
Selb, Juliette
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机构:
Harvard Med Sch, Massachusetts Gen Hosp, Dept Radiol, MGH HST Athinoula A Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USAHarvard Med Sch, Massachusetts Gen Hosp, Dept Radiol, MGH HST Athinoula A Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USA
Selb, Juliette
Farzam, Parisa
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Harvard Med Sch, Massachusetts Gen Hosp, Dept Radiol, MGH HST Athinoula A Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USAHarvard Med Sch, Massachusetts Gen Hosp, Dept Radiol, MGH HST Athinoula A Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USA
Farzam, Parisa
Franceschini, Maria Angela
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Harvard Med Sch, Massachusetts Gen Hosp, Dept Radiol, MGH HST Athinoula A Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USAHarvard Med Sch, Massachusetts Gen Hosp, Dept Radiol, MGH HST Athinoula A Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USA
Franceschini, Maria Angela
Carp, Stefan A.
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机构:
Harvard Med Sch, Massachusetts Gen Hosp, Dept Radiol, MGH HST Athinoula A Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USAHarvard Med Sch, Massachusetts Gen Hosp, Dept Radiol, MGH HST Athinoula A Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USA
机构:
Harvard Univ, Sch Med, Massachusetts Gen Hosp, Anthinoula A Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USAHarvard Univ, Sch Med, Massachusetts Gen Hosp, Anthinoula A Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USA
Boas, David A.
Dunn, Andrew K.
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Univ Texas Austin, Dept Biomed Engn, Austin, TX 78712 USAHarvard Univ, Sch Med, Massachusetts Gen Hosp, Anthinoula A Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USA