Title :
Imaging of tissue blood flow by coherent light scattering
Author :
Nilsson, G.E. ; Jakobsson, A. ; Wardell, K.
Author_Institution :
Dept. of Biomed. Eng., Linkoping Univ., Sweden
Abstract :
A tissue perfusion imager is presented, the characteristics of which combine the advantages of laser Doppler flowmetry with a facility for displaying spatial information on microvascular perfusion. A preliminary evaluation of the system was performed at a scanning rate of four positions/s. The evaluation shows that an arrested skin blood flow distal to finger occlusion is readily and clearly revealed by the perfusion imager as is the extension of the hyperemia surrounding an experimental burn. The perfuser imager is noninvasive, allowing the recording of tissue blood flow without touching the object
Keywords :
biorheology; blood; flow measurement; laser applications in medicine; patient diagnosis; arrested skin blood flow; coherent light scattering; experimental burn; finger occlusion; hyperemia; laser Doppler flowmetry; medical diagnostic technique; microvascular perfusion; scanning rate; spatial information display; tissue blood flow imaging; tissue perfusion imager; Biomedical imaging; Blood flow; Fiber lasers; Fingers; Light scattering; Optical fibers; Optical imaging; Optical scattering; Signal processing; Skin;
Conference_Titel :
Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in
Conference_Location :
Seattle, WA
DOI :
10.1109/IEMBS.1989.95785
