Fast, large field-of-view, telecentric optical-CT scanning system for 3D radiochromic dosimetry.


Journal Article

We describe initial experiences with an in-house, fast, large field-of-view optical-CT telecentric scanner (the Duke Large field of view Optical-CT Scanner (DLOS)). The DLOS system is designed to enable telecentric optical-CT imaging of dosimeters up to 24 cm in diameter with a spatial resolution of 1 mm(3), in approximately 10 minutes. These capabilities render the DLOS system a unique device at present. The system is a scaled up version of early prototypes in our lab. This scaling introduces several challenges, including the accurate measurement of a greatly increased range of light attenuation within the dosimeter, and the need to reduce even minor reflections and scattered light within the imaging chain. We present several corrections and techniques that enable accurate, low noise, 3D dosimetery with the DLOS system.

Full Text

Duke Authors

Cited Authors

  • Thomas, A; Oldham, M

Published Date

  • January 1, 2010

Published In

Volume / Issue

  • 250 / 1

Start / End Page

  • 1 - 5

PubMed ID

  • 21218169

Pubmed Central ID

  • 21218169

International Standard Serial Number (ISSN)

  • 1742-6588

Digital Object Identifier (DOI)

  • 10.1088/1742-6596/250/1/012007


  • eng

Conference Location

  • England