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Locating radiation hazards and sources within contaminated areas by implementing a reverse ray tracing technique in the RadBall™ technology.

Publication ,  Journal Article
Farfán, EB; Stanley, S; Holmes, C; Lennox, K; Oldham, M; Clift, C; Thomas, A; Adamovics, J
Published in: Health Phys
February 2012

RadBall™ is a novel technology that can locate unknown radioactive hazards within contaminated areas, hot cells, and gloveboxes. The device consists of a colander-like outer tungsten collimator that houses a radiation-sensitive polymer semisphere. The collimator has a number of small holes; as a result, specific areas of the polymer are exposed to radiation, becoming increasingly more opaque in proportion to the absorbed dose. The polymer semisphere is imaged in an optical computed tomography scanner that produces a high resolution three-dimensional map of optical attenuation coefficients. A subsequent analysis of the optical attenuation data, using a reverse ray tracing technique, provides information on the spatial distribution of gamma-ray sources in a given area, forming a three-dimensional characterization of the area of interest. The RadBall™ technology and its reverse ray tracing technique were investigated using known radiation sources at the Savannah River Site's Health Physics Instrument Calibration Laboratory and unknown sources at the Savannah River National Laboratory's Shielded Cells facility.

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Published In

Health Phys

DOI

EISSN

1538-5159

Publication Date

February 2012

Volume

102

Issue

2

Start / End Page

196 / 207

Location

United States

Related Subject Headings

  • Tomography, X-Ray Computed
  • Radiometry
  • Radiation Monitoring
  • Nuclear Medicine & Medical Imaging
  • 3202 Clinical sciences
  • 1117 Public Health and Health Services
 

Citation

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Farfán, E. B., Stanley, S., Holmes, C., Lennox, K., Oldham, M., Clift, C., … Adamovics, J. (2012). Locating radiation hazards and sources within contaminated areas by implementing a reverse ray tracing technique in the RadBall™ technology. Health Phys, 102(2), 196–207. https://doi.org/10.1097/HP.0b013e3182348c0a
Farfán, Eduardo B., Steven Stanley, Christopher Holmes, Kathryn Lennox, Mark Oldham, Corey Clift, Andrew Thomas, and John Adamovics. “Locating radiation hazards and sources within contaminated areas by implementing a reverse ray tracing technique in the RadBall™ technology.Health Phys 102, no. 2 (February 2012): 196–207. https://doi.org/10.1097/HP.0b013e3182348c0a.
Farfán EB, Stanley S, Holmes C, Lennox K, Oldham M, Clift C, et al. Locating radiation hazards and sources within contaminated areas by implementing a reverse ray tracing technique in the RadBall™ technology. Health Phys. 2012 Feb;102(2):196–207.
Farfán, Eduardo B., et al. “Locating radiation hazards and sources within contaminated areas by implementing a reverse ray tracing technique in the RadBall™ technology.Health Phys, vol. 102, no. 2, Feb. 2012, pp. 196–207. Pubmed, doi:10.1097/HP.0b013e3182348c0a.
Farfán EB, Stanley S, Holmes C, Lennox K, Oldham M, Clift C, Thomas A, Adamovics J. Locating radiation hazards and sources within contaminated areas by implementing a reverse ray tracing technique in the RadBall™ technology. Health Phys. 2012 Feb;102(2):196–207.

Published In

Health Phys

DOI

EISSN

1538-5159

Publication Date

February 2012

Volume

102

Issue

2

Start / End Page

196 / 207

Location

United States

Related Subject Headings

  • Tomography, X-Ray Computed
  • Radiometry
  • Radiation Monitoring
  • Nuclear Medicine & Medical Imaging
  • 3202 Clinical sciences
  • 1117 Public Health and Health Services