Investigation of the Physical Aspects of Beta Imaging Probes Using Scintillating Fibers and Visible Light Photon Counters


Journal Article

We are developing a hand-held imaging probe intended for intra-operative use. This probe is to be used after the bulk of a tumor has been removed. It will locate residual malignant tissue labeled by a pre-operative injection of a tumor-seeking radiopharmaceutical. The device presented here is a prototype system that consists of a 4 x 8 array of 925üm diameter plastic scintillating fibers. The imaging array is coupled to Visible Light Photon Counters (VLPCs) via 2 meters of optical fiber. We have obtained an intrinsic spatial resolution of < 1.0 mm with a highly collimated beta source, and a 2.0 mm resolution with a 1 mm, uncollimated source. Standard deviations of the relative gain and sensitivity over the 32 imaging elements were found to be 9.6% and 11.7% of the mean, respectively. © 1995 IEEE.

Full Text

Duke Authors

Cited Authors

  • MacDonald, LR; Tornai, MP; Levin, CS; Park, J; Atac, M; Cline, DB; Hoffman, EJ

Published Date

  • January 1, 1995

Published In

Volume / Issue

  • 42 / 4

Start / End Page

  • 1351 - 1357

Electronic International Standard Serial Number (EISSN)

  • 1558-1578

International Standard Serial Number (ISSN)

  • 0018-9499

Digital Object Identifier (DOI)

  • 10.1109/23.467855

Citation Source

  • Scopus