부산대학교 도서관

Confocal scanning laser microscopy of live human skin was performed to investigate the correlation of in vivo cellular and morphologic features to histology, the effect of wavelength on imaging, and the role of melanin as a contrast agent. We built a video-rate confocal scanning laser microscope for in viva imaging of human skins. Using a 100 × microscope objective, we imaged high-contrast optical "sections's of normal skin, vitiliginous skin, and a compound nevus. In vivo "confocal histology" correlated well with "conventional histology". The maximum imaged with visible 400 -700-nm wavelengths; the superficial papillary dermis and blood cells (erythrocytes and leukocytes) in the deeper capillaries were imaged with the near infrared 800-900-nm wavelengths. For confocal reflectance imaging, melanin provided strong contrast by increased backscattering of light such that the cytoplasm in heavily pigmented cells imaged brightly. In vivo confocal microscopy potentially offers dermatologists a diagnostic tool that is instant and entirely non-invasive compared to conventional histopathology. [ABSTRACT FROM AUTHOR]