๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Single photon counting imagery

โœ Scribed by Scott, R. Q. ;Inaba, Humio

Publisher
John Wiley and Sons
Year
1989
Weight
455 KB
Volume
4
Category
Article
ISSN
0884-3996

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โœฆ Synopsis

Advent of the multichannel plate and position sensitive detector has made possible true single photon counting imaging tubes. We have investigated the application of these detectors in studies of the ultraweak light emission of biological materials. Initially, we focussed our efforts on t w o objectives: 1) obtaining single photon counting images of living tissues using only the light (chemiluminescence) emitted by the specimen and 2) developing means of obtaining well-resolved spectra of weakly emitting sources. We have obtained a variety of images. One striking result of this work is the first observation of tissue specific localization of photon emission in situ. Using this detector we have also obtained the first well-resolved spectra of some important ultraweak emission processes. These results illustrate the potential use of single photon imaging in bioluminescence and chemiluminescence research.

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