Fan-beam scanning laser optical computed tomography for large volume dosimetry

A prototype scanning-laser fan beam optical CT scanner is reported which is capable of high resolution, large volume dosimetry with reasonable scan time. An acylindrical, asymmetric aquarium design is presented which serves to 1) generate parallel-beam scan geometry, 2) focus light towards a small a...

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Published in:Journal of physics. Conference series 2017-05, Vol.847 (1), p.12008
Main Authors: Dekker, K H, Battista, J J, Jordan, K J
Format: Article
Language:English
Subjects:
Bouguer law
Computed tomography
Diameters
Dosimeters
Dosimetry
Interference fringes
Optical scanners
Physics
Scanning
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cited_by cdi_FETCH-LOGICAL-c408t-675433b71fa379fba9785c94357a885ae662b9e31e3a8b244fe2ff7f9651d9f93
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description A prototype scanning-laser fan beam optical CT scanner is reported which is capable of high resolution, large volume dosimetry with reasonable scan time. An acylindrical, asymmetric aquarium design is presented which serves to 1) generate parallel-beam scan geometry, 2) focus light towards a small acceptance angle detector, and 3) avoid interference fringe-related artifacts. Preliminary experiments with uniform solution phantoms (11 and 15 cm diameter) and finger phantoms (13.5 mm diameter FEP tubing) demonstrate that the design allows accurate optical CT imaging, with optical CT measurements agreeing within 3% of independent Beer-Lambert law calculations.
doi_str_mv 10.1088/1742-6596/847/1/012008
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subjects Bouguer law
Computed tomography
Diameters
Dosimeters
Dosimetry
Interference fringes
Optical scanners
Physics
Scanning
title Fan-beam scanning laser optical computed tomography for large volume dosimetry
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