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

22 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
Article number101915
JournalMedical physics
Issue number10
StatePublished - Oct 1 2014


  • CT
  • bow tie filter
  • real-time dosimeter


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