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Quantitative radiographic imaging using a photostimulable phosphor system.

Publication ,  Journal Article
Floyd, CE; Chotas, HG; Dobbins, JT; Ravin, CE
Published in: Med Phys
1990

We have evaluated a photostimulable phosphor x-ray imaging system [Philips Computed Radiography (PCR) system] for use in quantification of x-ray exposure in diagnostic radiography. An exponential function was fitted to data yielding quantitative x-ray exposure values as a function of digital pixel values. We investigated several factors that affect the accuracy of exposure measurement using the PCR including repeatability, background noise as a function of time delay between plate erasure and use, sensitivity variation between different plates, nonuniformity of sensitivity within a plate, decay of the latent image between time of exposure and readout (observed as a change in sensitivity), and the accuracy with which the (exponential) calibration function yields exposure values as a function of digital pixel values. The calibration was performed over the exposure range from 5.1 X 10(-9) to 2.0 X 10(-5) C/kg (0.02-75 mR). The accuracy of exposure measurements made with a single imaging plate is between 1.6% and 4.2%. If measurements from several plates are involved, the uncertainty in the final measurement will be between 5% and 5.9%.

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Published In

Med Phys

DOI

ISSN

0094-2405

Publication Date

1990

Volume

17

Issue

3

Start / End Page

454 / 459

Location

United States

Related Subject Headings

  • Radiography
  • Radiation Dosage
  • Nuclear Medicine & Medical Imaging
  • Luminescent Measurements
  • Humans
  • Evaluation Studies as Topic
  • 5105 Medical and biological physics
  • 4003 Biomedical engineering
  • 1112 Oncology and Carcinogenesis
  • 0903 Biomedical Engineering
 

Citation

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Floyd, C. E., Chotas, H. G., Dobbins, J. T., & Ravin, C. E. (1990). Quantitative radiographic imaging using a photostimulable phosphor system. Med Phys, 17(3), 454–459. https://doi.org/10.1118/1.596569
Floyd, C. E., H. G. Chotas, J. T. Dobbins, and C. E. Ravin. “Quantitative radiographic imaging using a photostimulable phosphor system.Med Phys 17, no. 3 (1990): 454–59. https://doi.org/10.1118/1.596569.
Floyd CE, Chotas HG, Dobbins JT, Ravin CE. Quantitative radiographic imaging using a photostimulable phosphor system. Med Phys. 1990;17(3):454–9.
Floyd, C. E., et al. “Quantitative radiographic imaging using a photostimulable phosphor system.Med Phys, vol. 17, no. 3, 1990, pp. 454–59. Pubmed, doi:10.1118/1.596569.
Floyd CE, Chotas HG, Dobbins JT, Ravin CE. Quantitative radiographic imaging using a photostimulable phosphor system. Med Phys. 1990;17(3):454–459.

Published In

Med Phys

DOI

ISSN

0094-2405

Publication Date

1990

Volume

17

Issue

3

Start / End Page

454 / 459

Location

United States

Related Subject Headings

  • Radiography
  • Radiation Dosage
  • Nuclear Medicine & Medical Imaging
  • Luminescent Measurements
  • Humans
  • Evaluation Studies as Topic
  • 5105 Medical and biological physics
  • 4003 Biomedical engineering
  • 1112 Oncology and Carcinogenesis
  • 0903 Biomedical Engineering