title: X-ray dose estimation from cathode ray tube monitors by Monte Carlo calculation.
abstract: Cathode Ray Tube (CRT) monitors are associated with the possible emission of bremsstrahlung radiation produced by electrons striking the monitor screen. Because of the low dose rate, accurate dosimetry is difficult. In this study, the dose equivalent (DE) and effective dose (ED) to an operator working in front of the monitor have been calculated using the Monte Carlo (MC) method by employing the MCNP code. The mean energy of photons reaching the operator was above 17 keV. The phantom ED was 454 μSv y (348 nSv h), which was reduced to 16 μSv y (12 nSv h) after adding a conventional leaded glass sheet. The ambient dose equivalent (ADE) and personal dose equivalent (PDE) for the head, neck, and thorax of the phantom were also calculated. The uncertainty of calculated ED, ADE, and PDE ranged from 3.3% to 10.7% and 4.2% to 14.6% without and with the leaded glass, respectively.
authors.affiliation: *Department of Medical Radiation, Science and Research Branch, Islamic Azad University, Tehran, Iran; †Department of Medical Physics, Imam Hossein Hospital, Shahid Beheshti Medical University, Tehran, Iran; ‡Department of Medical Radiation, Science and Research Branch, Islamic Azad University, Tehran, Iran.
authors.forename: Navid
authors.initials: N
authors.lastname: Khaledi
authors.forename: Azim
authors.initials: A
authors.lastname: Arbabi
authors.forename: Moloud
authors.initials: M
authors.lastname: Dabaghi
mesh_terms: D055984:Cathode Ray Tube; D004583:Electrons; D006801:Humans; D009010:Monte Carlo Method; D019047:Phantoms, Imaging; D011829:Radiation Dosage; D011874:Radiometry; D014965:X-Rays