1 March 2004 Imaging wound healing using optical coherence tomography and multiphoton microscopy in an in vitro skin-equivalent tissue model
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J. of Biomedical Optics, 9(2), (2004). doi:10.1117/1.1648646
Abstract
Laser thermal injury and subsequent wound healing in organotypic, skin-equivalent tissue models were monitored using optical coherence tomography (OCT), multiphoton microscopy (MPM), and histopathology. The in vitro skin-equivalent raft tissue model was composed of dermis with type I collagen and fibroblast cells and epidermis of differentiated keratinocytes. Noninvasive optical imaging techniques were used for time-dependent, serial measurements of matrix destruction and reconstruction and compared with histopathology. The region of laser thermal injury was clearly delineated in OCT images by low signal intensity. High resolution MPM imaging using second-harmonic generation revealed alterations in collagen microstructure organization with subsequent matrix reconstruction. Fibroblast cell migration in response to injury was monitored by MPM using two-photon excited fluorescence. This study illustrates the complementary features of linear and nonlinear light–tissue interaction in intrinsic signal optical imaging and their use for noninvasive, serial monitoring of wound healing processes in biological tissues.
Alvin T. Yeh, Bunsho Kao, Woong Gyu Jung, Zhongping Chen, John Stuart Nelson, Bruce J. Tromberg, "Imaging wound healing using optical coherence tomography and multiphoton microscopy in an in vitro skin-equivalent tissue model," Journal of Biomedical Optics 9(2), (1 March 2004). http://dx.doi.org/10.1117/1.1648646
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KEYWORDS
Collagen

Optical coherence tomography

Second-harmonic generation

Tissue optics

Injuries

Wound healing

Tissues

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