Measurement of scatter fractions in clinical bedside radiography.
The authors present measurements of scatter fraction (SF), the ratio of scattered to total imaged photons, from clinical bedside radiographs of 102 patients. These measurements were obtained by using a new posterior beam-stop technique that does not alter the diagnostic image but that simultaneously provides SF measurements at 224 locations in the image. The SF values in the lung were found to be consistent with previous measurements, while the SF values in the mediastinal and retrocardiac areas were larger than previously reported. SFs in diseased lung were significantly larger than SFs in normal lung. The range of SF values was large for all anatomic locations. For applications in which accurate scatter estimation is required, this wide range of values suggests that SFs should be measured in each individual image.
Duke Scholars
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Related Subject Headings
- Scattering, Radiation
- Radiometry
- Radiography, Thoracic
- Nuclear Medicine & Medical Imaging
- Middle Aged
- Male
- Humans
- Female
- 3202 Clinical sciences
- 11 Medical and Health Sciences
Citation
Published In
DOI
ISSN
Publication Date
Volume
Issue
Start / End Page
Location
Related Subject Headings
- Scattering, Radiation
- Radiometry
- Radiography, Thoracic
- Nuclear Medicine & Medical Imaging
- Middle Aged
- Male
- Humans
- Female
- 3202 Clinical sciences
- 11 Medical and Health Sciences