Skip to main content
release_alert
Welcome to the new Scholars 3.0! Read about new features and let us know what you think.
cancel

Scatter compensation in digital chest radiography using the posterior beam stop technique.

Publication ,  Journal Article
Lo, JY; Floyd, CE; Baker, JA; Ravin, CE
Published in: Med Phys
March 1994

A new scatter compensation technique for computed radiography based on posterior beam stop (PBS) sampled scatter measurements and the bicubic spline interpolation technique was proposed. Using only a single exposure, both the clinical image and an array of scatter measurements, which were interpolated into a smooth scatter-only image, were simultaneously acquired. The scatter was subtracted from the clinical image to generate the primary-only image. To gauge the accuracy of scatter estimation, both quantitative and interpolation errors were evaluated. The PBS measurements were compared against the standard beam stop method at 16 locations in an anatomical phantom, resulting in quantitative errors of 2.7% relative to the scatter or 6.8% relative to the primary. Also measured were the interpolation error over 64 interpolation sample locations and 64 midpoint sample locations in the anatomical phantom. The combined interpolation error was 1.9% relative to the scatter or 8.0% relative to the primary. At the interpolation sample locations, the errors were identical between the phantom radiograph and digital portable chest radiographs from five patients. By summing the quantitative and interpolation errors in quadrature, the overall error of the PBS SISTER (scatter interpolation-subtraction technique for radiography) method was 3.3% relative to the scatter or 10% relative to the primary, which was adequate for dual-energy imaging purposes (less than 10% error relative to the scatter or 20% relative to the primary). The change of image contrast, noise, and signal-to-noise ratio (SNR) at six locations in the anatomical phantom were quantitatively analyzed. Contrast and noise were equally enhanced in all anatomical regions, resulting in approximately the same SNR before and after compensation.(ABSTRACT TRUNCATED AT 250 WORDS)

Duke Scholars

Published In

Med Phys

DOI

ISSN

0094-2405

Publication Date

March 1994

Volume

21

Issue

3

Start / End Page

435 / 443

Location

United States

Related Subject Headings

  • Technology, Radiologic
  • Radiography, Thoracic
  • Radiographic Image Enhancement
  • Nuclear Medicine & Medical Imaging
  • Humans
  • Algorithms
  • 1112 Oncology and Carcinogenesis
  • 0903 Biomedical Engineering
  • 0299 Other Physical Sciences
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Lo, J. Y., Floyd, C. E., Baker, J. A., & Ravin, C. E. (1994). Scatter compensation in digital chest radiography using the posterior beam stop technique. Med Phys, 21(3), 435–443. https://doi.org/10.1118/1.597388
Lo, J. Y., C. E. Floyd, J. A. Baker, and C. E. Ravin. “Scatter compensation in digital chest radiography using the posterior beam stop technique.Med Phys 21, no. 3 (March 1994): 435–43. https://doi.org/10.1118/1.597388.
Lo JY, Floyd CE, Baker JA, Ravin CE. Scatter compensation in digital chest radiography using the posterior beam stop technique. Med Phys. 1994 Mar;21(3):435–43.
Lo, J. Y., et al. “Scatter compensation in digital chest radiography using the posterior beam stop technique.Med Phys, vol. 21, no. 3, Mar. 1994, pp. 435–43. Pubmed, doi:10.1118/1.597388.
Lo JY, Floyd CE, Baker JA, Ravin CE. Scatter compensation in digital chest radiography using the posterior beam stop technique. Med Phys. 1994 Mar;21(3):435–443.

Published In

Med Phys

DOI

ISSN

0094-2405

Publication Date

March 1994

Volume

21

Issue

3

Start / End Page

435 / 443

Location

United States

Related Subject Headings

  • Technology, Radiologic
  • Radiography, Thoracic
  • Radiographic Image Enhancement
  • Nuclear Medicine & Medical Imaging
  • Humans
  • Algorithms
  • 1112 Oncology and Carcinogenesis
  • 0903 Biomedical Engineering
  • 0299 Other Physical Sciences