X-Message-Number: 909
Date: Wed, 17 Jun 92 22:36:02 +0200
From:  (David Stodolsky)
Subject: CRYONICS: confocal microscope research

BBC's Science in Action program (92.6.14) carried an interview concerning
confocal microscope research in the UK. This microscope is powered by a
cyclotron of about 50 meters in diameter and can generate a thin beam of light
at frequencies up to ultraviolet. Examination of specimens occurs by scanning
the beam across the object, with the effect of optically "sectioning" the
specimen. The specimen can be living, but currently only 50 microns in depth.
This is due to limits of beam penetration. The availability of a continuously
variable frequency source enhances examination of specimens. This approach
improves upon normal light microscope in resolution, contrast, etc. (Facts from
memory.)


This means about four thousand physical sections would be needed to scan a human

brain (.2 meters diameter). This assumes the ability to handle large sections of
50 microns thickness, etc.

David S. Stodolsky                Messages: + 45 46 75 77 11 x 24 41
Department of Computer Science                 Tel: + 45 31 95 92 82
Bldg. 20.1, Roskilde University Center        Internet: 
Post Box 260, DK-4000 Roskilde, Denmark        Fax: + 45 46 75 42 01

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