Raster Scan or Raster Scanning-- is the rectangular pattern of image capture and reconstruction in television. By analogy, the term is used for raster graphics, the pattern of image storage and transmission used in most computer bitmap image systems. The word raster comes from the Latin word rastrum (a rake), which is derived from radere (to scrape); see also rastrum, an instrument for drawing musical staff lines. The pattern left by the lines of a rake, when drawn straight, resembles the…
Known as RSOM (raster-scan optoacoustic mesoscopy), the technology incorporates weak laser pulses. This causes the tissue to momentarily expand, which in turn generates ultrasound waves. The sensor is able to detect those waves. RSOM allowed the scientists to determine individuals' skin thickness, capillary density, number of blood vessels, and total blood volume in the skin. Down the road, it's possible that the system could also be used to assess diseases such as skin cancer or diabetes.
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See figure: 'Fig. (a) Scheme of principle for laser scanning confocal microscopy.' from publication 'Advanced Motion Compensation Methods for Intravital Optical Microscopy' on ResearchGate, the professional network for scientists.
Futuristic Technology. Virtual retinal display. A virtual retinal display (VRD), also known as a retinal scan display (RSD), is a new display technology that draws a raster display (like a television) directly onto the retina of the eye. The user sees what appears to be a conventional display floating in space in front of them.
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