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Threshold perception performance with computed and screen-film radiography: implications for chest radiography.

Publication ,  Journal Article
Dobbins, JT; Rice, JJ; Beam, CA; Ravin, CE
Published in: Radiology
April 1992

Images of a phantom obtained with computed radiography and standard screen-film imaging were compared to evaluate observer threshold perception performance with a modified contrast-detail technique. Optimum exposure necessary for performance with the imaging plate technique to match that with screen-film techniques was determined, as was comparative performance with variation in kilovoltages, plate type, spatial enhancement, and hard-copy interpolation method. It was found that computed radiography necessitates about 75%-100% more exposure than screen-film radiography to optimally match performance with Ortho-C film with Lanex regular or medium screens (Eastman Kodak, Rochester, NY) for detection of objects 0.05-2.0 cm in diameter. However, only minimal loss of detection performance (approximately 10% overall) was experienced if standard screen-film exposures were used with computed radiography. Little change in observer performance was found with variation in plate type, spatial enhancement, or method of hard-copy interpolation. However, perception performance with computed radiographic images was better at lower kilovoltages.

Duke Scholars

Published In

Radiology

DOI

ISSN

0033-8419

Publication Date

April 1992

Volume

183

Issue

1

Start / End Page

179 / 187

Location

United States

Related Subject Headings

  • X-Ray Intensifying Screens
  • Radiography, Thoracic
  • Radiographic Image Enhancement
  • Observer Variation
  • Nuclear Medicine & Medical Imaging
  • Models, Structural
  • Humans
  • 3202 Clinical sciences
  • 11 Medical and Health Sciences
 

Citation

APA
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ICMJE
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Dobbins, J. T., Rice, J. J., Beam, C. A., & Ravin, C. E. (1992). Threshold perception performance with computed and screen-film radiography: implications for chest radiography. Radiology, 183(1), 179–187. https://doi.org/10.1148/radiology.183.1.1549669
Dobbins, J. T., J. J. Rice, C. A. Beam, and C. E. Ravin. “Threshold perception performance with computed and screen-film radiography: implications for chest radiography.Radiology 183, no. 1 (April 1992): 179–87. https://doi.org/10.1148/radiology.183.1.1549669.
Dobbins JT, Rice JJ, Beam CA, Ravin CE. Threshold perception performance with computed and screen-film radiography: implications for chest radiography. Radiology. 1992 Apr;183(1):179–87.
Dobbins, J. T., et al. “Threshold perception performance with computed and screen-film radiography: implications for chest radiography.Radiology, vol. 183, no. 1, Apr. 1992, pp. 179–87. Pubmed, doi:10.1148/radiology.183.1.1549669.
Dobbins JT, Rice JJ, Beam CA, Ravin CE. Threshold perception performance with computed and screen-film radiography: implications for chest radiography. Radiology. 1992 Apr;183(1):179–187.
Journal cover image

Published In

Radiology

DOI

ISSN

0033-8419

Publication Date

April 1992

Volume

183

Issue

1

Start / End Page

179 / 187

Location

United States

Related Subject Headings

  • X-Ray Intensifying Screens
  • Radiography, Thoracic
  • Radiographic Image Enhancement
  • Observer Variation
  • Nuclear Medicine & Medical Imaging
  • Models, Structural
  • Humans
  • 3202 Clinical sciences
  • 11 Medical and Health Sciences