Cytocam-IDF (incident dark field illumination) imaging for bedside monitoring of the microcirculation
نویسندگان
چکیده
BACKGROUND Orthogonal polarized spectral (OPS) and sidestream dark field (SDF) imaging video microscope devices were introduced for observation of the microcirculation but, due to technical limitations, have remained as research tools. Recently, a novel handheld microscope based on incident dark field illumination (IDF) has been introduced for clinical use. The Cytocam-IDF imaging device consists of a pen-like probe incorporating IDF illumination with a set of high-resolution lenses projecting images on to a computer controlled image sensor synchronized with very short pulsed illumination light. This study was performed to validate Cytocam-IDF imaging by comparison to SDF imaging in volunteers. METHODS This study is a prospective, observational study. The subjects consist of 25 volunteers. RESULTS Sublingual microcirculation was evaluated using both techniques. The main result was that Cytocam-IDF imaging provided better quality images and was able to detect 30% more capillaries than SDF imaging (total vessels density Cytocam-IDF: 21.60 ± 4.30 mm/mm(2) vs SDF: 16.35 ± 2.78 mm/mm(2), p < 0.0001). Comparison of the images showed increased contrast, sharpness, and image quality of both venules and capillaries. CONCLUSIONS Cytocam-IDF imaging detected more capillaries and provided better image quality than SDF imaging. It is concluded that Cytocam-IDF imaging may provide a new improved imaging modality for clinical assessment of microcirculatory alterations.
منابع مشابه
A comparison of the quality of image acquisition between the incident dark field and sidestream dark field video-microscopes
BACKGROUND The 'Cytocam' is a third generation video-microscope, which enables real time visualisation of the in vivo microcirculation. Based upon the principle of incident dark field (IDF) illumination, this hand held computer-controlled device was designed to address the technical limitations of its predecessors, orthogonal polarization spectroscopy and sidestream dark field (SDF) imaging. In...
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