Posterior beam-stop method for scatter fraction measurement in digital radiography.
Journal Article (Journal Article)
The authors presented a new posterior beam-stop (PBS) technique for measuring the ratio of scattered to total-detected photon flux (scatter fraction) in a radiographic examination while preserving the diagnostic quality of the image. The scatter measurement was made using a standard imaging geometry with both beam stops and an additional x-ray detector placed behind the standard imaging detector. This PBS geometry differs from the standard beam-stop (SBS) technique for scatter measurement. With SBS, a beam-stop shadow appears on the image. To evaluate the PBS technique, scatter fraction measurements were performed on an anatomic phantom using both the PBS and SBS techniques. When compared with the standard technique, PBS provided accurate estimation of scatter fractions. Since the measurement can be performed without degrading a standard clinical radiographic examination, the PBS technique allows simultaneous acquisition of scatter measurements from human patients in combination with a standard radiographic examination.
Full Text
Duke Authors
Cited Authors
- Floyd, CE; Baker, JA; Lo, JY; Ravin, CE
Published Date
- February 1, 1992
Published In
Volume / Issue
- 27 / 2
Start / End Page
- 119 - 123
PubMed ID
- 1601602
International Standard Serial Number (ISSN)
- 0020-9996
Digital Object Identifier (DOI)
- 10.1097/00004424-199202000-00004
Language
- eng
Conference Location
- United States