Print Email Facebook Twitter Remote non-invasive stereoscopic imaging of blood vessels: First in-vivo results of a new multispectral contrast enhancement technology Title Remote non-invasive stereoscopic imaging of blood vessels: First in-vivo results of a new multispectral contrast enhancement technology Author Wieringa, F.P. Mastik, F. ten Cate, F.J. Neumann, H.A.M. van der Steen, A.F.W. TNO Kwaliteit van Leven Publication year 2006 Abstract We describe a contactless optical technique selectively enhancing superficial blood vessels below variously pigmented intact human skin by combining images in different spectral bands. Two CMOS-cameras, with apochromatic lenses and dual-band LED-arrays, simultaneously streamed Left (L) and Right (R) image data to a dual-processor PC. Both cameras captured color images within the visible range (VIS, 400-780 nm) and grey-scale images within the near infrared range (NIR, 910-920 nm) by sequentially switching between LED-array emission bands. Image-size-settings of 1280 × 1024 for VIS & 640 × 512 for NIR produced 12 cycles/s (1 cycle = 1 VIS L&R-pair + 1 NIR L&R-pair). Decreasing image-size-settings (640 × 512 for VIS and 320 × 256 for NIR) increased camera-speed to 25 cycles/s. Contrasts from below the tissue surface were algorithmically distinguished from surface shadows, reflections, etc. Thus blood vessels were selectively enhanced and back-projected into the stereoscopic VIS-color-image using either a 3D-display or conventional shutter glasses. As a first usability reconnaissance we applied this custom-built mobile stereoscopic camera for several clinical settings: • blood withdrawal; • vein inspection in dark skin; • vein detection through iodide; • varicose vein and nevi pigmentosum inspection. Our technique improves blood vessel visualization compared to the naked eye, and supports depth perception. cop. Biomedical Engineering Society 2006. Subject Biomedical InnovationBiologyHealthy LivingBiomedical Research3D-displayContactless enhanced viewing of superficial vasculatureIntuitive technologyMultispectral stereoscopyReconnaissance of feasibility for various clinical applicationsBand structureBiodiversityImage analysisLight emitting diodesOptical engineeringSkinSpecial effectsThree dimensional computer graphicsContactless enhanced viewing of superficial vasculatureIntuitive technologyMultispectral stereoscopyReconnaissance of feasibility for various clinical applicationsBlood vesselsHistologyInstrumentationMethodologyThree dimensional imagingVascularizationForearmHumansImaging, Three-Dimensional To reference this document use: http://resolver.tudelft.nl/uuid:848367ad-ab2f-4ecc-a8a1-1178255fd50f TNO identifier 239700 ISSN 0090-6964 Source Annals of Biomedical Engineering, 34 (12), 1870-1878 Document type article Files To receive the publication files, please send an e-mail request to TNO Library.