title: EFFECTIVE DOSES RADIATION TO THE PATIENTS IN EXAMINATIONS PERFORMED IN THREE CT SCANNERS IN BRAZIL.
abstract: This work aimed to analyze the effective doses radiation, estimated from the dose-length product, in 4821 examinations carried out in three CT scanners (named as A, B and C) during the period of December 1st 2013 to 30th November 2014 and compare them, with 95% confidence interval, with typical values for the CT practice described in the American Association of Physicists in Medicine (AAPM) Report # 96 (2008). The mean values of effective doses found in the A, B and C equipments were, respectively, 1.55, 2.09 and 1.30 mSv, in head; 7.75, 9.01 and 10.45 mSv in abdomen/pelvis; and 3.87, 7.94 and 3.92 mSv in chest examinations. There were significantly different among each service, except between the A and C equipments in the chest examinations (p = 0.7148). Only the B equipment performed CT scans with effective doses above the US typical values, for head and chest examinations.
authors.affiliation: Radiology Service of the Marcilio Dias Navy Hospital (HNMD), Federal Fluminense University (UFF), Rio de Janeiro-RJ,Brazil.
authors.forename: Mônica Silva Costa Janson
authors.initials: MSCJ
authors.lastname: Ney
authors.affiliation: Radiology Service of the Antonio Pedro University Hospital, Federal Fluminense University (UFF), Imaging Center of the Complex Hospital of Niterói (CHN), Niterói-RJ, Brazil.
authors.forename: Alair Augusto Sarmet Moreira Damas
authors.initials: AASMD
authors.lastname: Dos Santos
authors.affiliation: Section of Biostatistics at the Institute of Biomedical Research of the Marcilio Dias Navy Hospital (IPB-HNMD), Rio de Janeiro-RJ,Brazil.
authors.forename: GIuliana Vasconcelos De Souza
authors.initials: GVS
authors.lastname: Fonseca
authors.affiliation: Medical School of the Federal Fluminense University (UFF), Niterói-RJ, Brazil.
authors.forename: Caio Silva
authors.initials: CS
authors.lastname: Lodi
mesh_terms: D001938:Brazil; D005260:Female; D006801:Humans; D008297:Male; D058958:Organs at Risk; D011829:Radiation Dosage; D011874:Radiometry / Q000379:methods*; D012189:Retrospective Studies; D015898:Tomography Scanners, X-Ray Computed