An endoscopic multi-exposure laser speckle contrast analysis system for blood flow and microcirculation measurements

M. Tziraki, L. Song, D. S. Elson, Kirill V. Larin, David D. Sampson
2015 Optical Elastography and Tissue Biomechanics II  
We present a dual wavelength endoscope which uses Endoscopic Laser Speckle Contrast Analysis (ELASCA) with the aim to image tissue blood flow and perfusion during surgical procedures. In this study we measure speckle decorelation times, which are associated with flow, by imaging speckle patterns at a wide range of detector exposure times. In order to understand the effects of image collection efficiency and sample scattering properties, control experiments with different optical systems were
more » ... formed by imaging of tissue mimicking phantoms and inferring their flow parameters. Keywords: Speckle contrast, blood flow, endoscopy. 2SWLFDO (ODVWRJUDSK\ DQG 7LVVXH %LRPHFKDQLFV " HGLWHG E\ .LULOO 9 /DULQ 'DYLG ' 6DPSVRQ 3URF RI 63,( 9RO % ā 63,( ā &&& FRGH GRL 3URF RI 63,( 9RO % Downloaded From: on 06/02/2015 Terms of Use:
doi:10.1117/12.2078225 fatcat:kx4yz7lkwfampkhb22hqboe5be