title: Real-time high-resolution measurement of collagen alignment in dynamically loaded soft tissue.
abstract: A technique for creating maps of the direction and strength of fiber alignment in collagenous soft tissues is presented. The method uses a division of focal plane polarimeter to measure circularly polarized light transmitted through the tissue. The architecture of the sensor allows measurement of the retardance and fiber alignment at the full frame rate of the sensor without any moving optics. The technique compares favorably to the standard method of using a rotating polarizer. How the new technique enables real-time capture of the full angular spread of fiber alignment and retardance under various cyclic loading conditions is illustrated.
authors: Washington University in St. Louis, Department of Computer Science and Engineering, 1 Brookings Drive, Campus Box 1045, St. Louis, Missouri 63130.
authors: Timothy
authors: T
authors: York
authors: Washington University in St. Louis, Department of Mechanical Engineering and Materials Science, 1 Brookings Drive, Campus Box 1185, St. Louis, Missouri 63130.
authors: Lindsey
authors: L
authors: Kahan
authors: Washington University in St. Louis, Department of Mechanical Engineering and Materials Science, 1 Brookings Drive, Campus Box 1185, St. Louis, Missouri 63130.
authors: Spencer P
authors: SP
authors: Lake
authors: Washington University in St. Louis, Department of Computer Science and Engineering, 1 Brookings Drive, Campus Box 1045, St. Louis, Missouri 63130.
authors: Viktor
authors: V
authors: Gruev
mesh_terms: D000818:Animals; D001696:Biomechanical Phenomena; D002417:Cattle; D003094:Collagen / Q000737:chemistry*; D003952:Diagnostic Imaging / Q000379:methods; D004867:Equipment Design; D008027:Light; D055095:Optics and Photonics; D013314:Stress, Mechanical; D013710:Tendons / Q000473:pathology; D013718:Tensile Strength
chemical_list: D003094:Collagen