Near-infrared imaging takes large-scale 3D imaging to a new level
Most treatments are targeted at a particular area, to solve an isolated problem. But no organ is an island. Researchers, therefore, are interested in ways to visualise whole-system changes as well as cell-level interactions that occur during disease and development. A new approach combines several techniques to provide a complete 3D map of the mouse vessel network (pictured, coloured according to vessel height, left, and depth under the skin, right). The researchers used light-sheet fluorescence microscopy, which shines thin sheets of light to take images in layers, a carefully timed approach to remove visual noise caused by background structures, and an algorithm to extract and analyse the vessel data. These approaches, applied with fluorescence imaging at the near-infrared wavelength of light, give a glimpse of what happens to the whole body – useful to show the details of disease development and test the broad impacts of new potential treatments.
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