Measurement of bow tie profiles in CT scanners using a real-time dosimeter

Bruce R. Whiting, Joshua D. Evans, Andreea C. Dohatcu, Jeffrey F. Williamson, David G. Politte

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


Purpose: Several areas of computed tomography (CT) research require knowledge about the intensity profile of the x-ray fan beam that is introduced by a bow tie filter. This information is considered proprietary by CT manufacturers, so noninvasive measurement methods are required. One method using real-time dosimeters has been proposed in the literature. A commercially available dosimeter was used to apply that method, and analysis techniques were developed to extract fan beam profiles from measurements.

Original languageEnglish (US)
Article number101915
JournalMedical Physics
Issue number10
StatePublished - Oct 1 2014
Externally publishedYes


  • CT
  • bow tie filter
  • real-time dosimeter

ASJC Scopus subject areas

  • Biophysics
  • Radiology Nuclear Medicine and imaging


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