Transcription of Using Automatic Exposure Control in Digital Radiography
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Using Automatic Exposure Control in Digital Radiography
1 Using Automatic Using Automatic Exposure Control in Exposure Control in Digital RadiographyDigital RadiographyA. Kyle Jones, Kyle Jones, M. D. Anderson Cancer M. D. Anderson Cancer CenterDepartment of Imaging PhysicsDepartment of Imaging Physics2008 AAPM Meeting, Houston, TX2008 AAPM Meeting, Houston, TXAutomatic Exposure ControlAutomatic Exposure Control The purpose of AEC is to deliver consistent, The purpose of AEC is to deliver consistent, reproducible exposures across a wide range of reproducible exposures across a wide range of anatomical thicknesses, tube potentials, and anatomical thicknesses, tube potentials, and usersusers Detectors used in AEC systems include Detectors used in AEC systems include fluorescent screens with fluorescent screens with PMTsPMTs/photodiodes, /photodiodes, ionization chambers, and possibly solid state ionization chambers.
Cassette-based digital radiography Sometimes the relationship between EI and detector between EI and detector exposure is not obvious/proprietary Exposure indicator must be verified Goldman AAPM Summer School Doyle, P and Martin, CJ, Calibrating automatic exposure control devices for digital radiography, Phys. Med. Biol. 51:5475-5485, 2006.
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