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Film-based chest radiography: AMBER vs asymmetric screen-film systems.

Publication ,  Journal Article
Chotas, HG; Floyd, CE; Ravin, CE
Published in: AJR Am J Roentgenol
October 1993

OBJECTIVE: Contrast-to-noise ratios were measured on radiographs from two types of state-of-the-art chest imaging systems (an Advanced Multiple Beam Equalization Radiography [AMBER] system and an asymmetric screen-film system) to facilitate an objective comparison of image quality. MATERIALS AND METHODS: Radiographs of a chest phantom were obtained by using the AMBER system with a medium-latitude screen-film image recorder (Kodak T-MAT L film and Lanex regular screens) and a commercially available asymmetric, zero-crossover screen-film system optimized for chest radiography (Kodak InSight and InSight HC). Conventionally acquired radiographs (T-MAT L/Lanex regular) were also evaluated as a reference. Films were digitized, radiographic contrast and noise were measured in the lung-, mediastinum-, and subdiaphragm-equivalent regions of each image, and contrast-to-noise ratios were computed. RESULTS: Radiographic contrast and contrast-to-noise values were found to be higher on AMBER images in all chest regions when compared with radiographs obtained with the asymmetric screen-film systems (InSight contrast-to-noise ratio approximately 77% of AMBER contrast-to-noise in the lung-equivalent region, 57% in the mediastinum-equivalent region, and 43% in the subdiaphragm-equivalent region). On conventional radiographs, the contrast and contrast-to-noise values were higher than on all other image types in the lung-equivalent region and lower than on all other image types in the less well penetrated chest areas. CONCLUSION: Image quality was higher, most notably in dense phantom regions, on radiographs obtained with the AMBER system than on radiographs obtained with the new asymmetric screen-film systems. Clinical studies are needed to determine whether this level of image improvement justifies the additional expense of the exposure equalization system.

Duke Scholars

Published In

AJR Am J Roentgenol

DOI

ISSN

0361-803X

Publication Date

October 1993

Volume

161

Issue

4

Start / End Page

743 / 747

Location

United States

Related Subject Headings

  • X-Ray Intensifying Screens
  • Radiography, Thoracic
  • Nuclear Medicine & Medical Imaging
  • Models, Structural
  • Humans
  • 1103 Clinical Sciences
 

Citation

APA
Chicago
ICMJE
MLA
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Chotas, H. G., Floyd, C. E., & Ravin, C. E. (1993). Film-based chest radiography: AMBER vs asymmetric screen-film systems. AJR Am J Roentgenol, 161(4), 743–747. https://doi.org/10.2214/ajr.161.4.8372749
Chotas, H. G., C. E. Floyd, and C. E. Ravin. “Film-based chest radiography: AMBER vs asymmetric screen-film systems.AJR Am J Roentgenol 161, no. 4 (October 1993): 743–47. https://doi.org/10.2214/ajr.161.4.8372749.
Chotas HG, Floyd CE, Ravin CE. Film-based chest radiography: AMBER vs asymmetric screen-film systems. AJR Am J Roentgenol. 1993 Oct;161(4):743–7.
Chotas, H. G., et al. “Film-based chest radiography: AMBER vs asymmetric screen-film systems.AJR Am J Roentgenol, vol. 161, no. 4, Oct. 1993, pp. 743–47. Pubmed, doi:10.2214/ajr.161.4.8372749.
Chotas HG, Floyd CE, Ravin CE. Film-based chest radiography: AMBER vs asymmetric screen-film systems. AJR Am J Roentgenol. 1993 Oct;161(4):743–747.

Published In

AJR Am J Roentgenol

DOI

ISSN

0361-803X

Publication Date

October 1993

Volume

161

Issue

4

Start / End Page

743 / 747

Location

United States

Related Subject Headings

  • X-Ray Intensifying Screens
  • Radiography, Thoracic
  • Nuclear Medicine & Medical Imaging
  • Models, Structural
  • Humans
  • 1103 Clinical Sciences