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Performance characteristics of a Kodak computed radiography system.

Publication ,  Journal Article
Bradford, CD; Peppler, WW; Dobbins, JT
Published in: Med Phys
January 1999

The performance characteristics of a photostimulable phosphor based computed radiographic (CR) system were studied. The modulation transfer function (MTF), noise power spectra (NPS), and detective quantum efficiency (DQE) of the Kodak Digital Science computed radiography (CR) system (Eastman Kodak Co.-model 400) were measured and compared to previously published results of a Fuji based CR system (Philips Medical Systems-PCR model 7000). To maximize comparability, the same measurement techniques and analysis methods were used. The DQE at four exposure levels (30, 3, 0.3, 0.03 mR) and two plate types (standard and high resolution) were calculated from the NPS and MTF measurements. The NPS was determined from two-dimensional Fourier analysis of uniformly exposed plates. The presampling MTF was determined from the Fourier transform (FT) of the system's finely sampled line spread function (LSF) as produced by a narrow slit. A comparison of the slit type ("beveled edge" versus "straight edge") and its effect on the resulting MTF measurements was also performed. The results show that both systems are comparable in resolution performance. The noise power studies indicated a higher level of noise for the Kodak images (approximately 20% at the low exposure levels and 40%-70% at higher exposure levels). Within the clinically relevant exposure range (0.3-3 mR), the resulting DQE for the Kodak plates ranged between 20%-50% lower than for the corresponding Fuji plates. Measurements of the presampling MTF with the two slit types have shown that a correction factor can be applied to compensate for transmission through the relief edges.

Duke Scholars

Published In

Med Phys

DOI

ISSN

0094-2405

Publication Date

January 1999

Volume

26

Issue

1

Start / End Page

27 / 37

Location

United States

Related Subject Headings

  • X-Ray Intensifying Screens
  • Radiographic Image Interpretation, Computer-Assisted
  • Radiographic Image Enhancement
  • Nuclear Medicine & Medical Imaging
  • Fourier Analysis
  • Evaluation Studies as Topic
  • 1112 Oncology and Carcinogenesis
  • 0903 Biomedical Engineering
  • 0299 Other Physical Sciences
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Bradford, C. D., Peppler, W. W., & Dobbins, J. T. (1999). Performance characteristics of a Kodak computed radiography system. Med Phys, 26(1), 27–37. https://doi.org/10.1118/1.598781
Bradford, C. D., W. W. Peppler, and J. T. Dobbins. “Performance characteristics of a Kodak computed radiography system.Med Phys 26, no. 1 (January 1999): 27–37. https://doi.org/10.1118/1.598781.
Bradford CD, Peppler WW, Dobbins JT. Performance characteristics of a Kodak computed radiography system. Med Phys. 1999 Jan;26(1):27–37.
Bradford, C. D., et al. “Performance characteristics of a Kodak computed radiography system.Med Phys, vol. 26, no. 1, Jan. 1999, pp. 27–37. Pubmed, doi:10.1118/1.598781.
Bradford CD, Peppler WW, Dobbins JT. Performance characteristics of a Kodak computed radiography system. Med Phys. 1999 Jan;26(1):27–37.

Published In

Med Phys

DOI

ISSN

0094-2405

Publication Date

January 1999

Volume

26

Issue

1

Start / End Page

27 / 37

Location

United States

Related Subject Headings

  • X-Ray Intensifying Screens
  • Radiographic Image Interpretation, Computer-Assisted
  • Radiographic Image Enhancement
  • Nuclear Medicine & Medical Imaging
  • Fourier Analysis
  • Evaluation Studies as Topic
  • 1112 Oncology and Carcinogenesis
  • 0903 Biomedical Engineering
  • 0299 Other Physical Sciences