{HEAD ~ A measuring method} for determining {TAIL ~ the distance} between the distal end of an endoscope and an object to be examined uses an optical radar and an endoscope, which comprises a distance measuring device 
for determining
{ HEAD ~ A measuring method } for determining { TAIL ~ the distance } between the distal end of an endoscope and an object to be examined uses an optical radar and an endoscope , which comprises a distance measuring device
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