Measure entrance surface dose into the crystalline, thyroid and body, in an anthropomorphic phantom, in panoramic radiography exams. Check the efficiency of radiological protections, and compare to the diagnostic reference levels and other studies.

This is a quantitative experimental study. The sampling method consisted of measuring the dose within the crystalline, thyroid gland and body, subject to Orthopantomography tests in a standard and pediatric protocol, in order to compare the results with the reference dose levels and other previous studies. The measurement was initially held without protection and subsequently with the respective safeguards with a total of 20 exposures. Instruments: GE Orthopantomography OP 100 Dosimeter AT1123 Atomtex Thermoluminescent dosimeters Anthropomorphic phantom Barium protection for the lens (equivalent to 0,125mm...

The average exposure parameters are shown on table 2. For the ESD measurements on the crystalline dosimeters 1, 4, 7 and 10 were used (table 3). Table 2: Exposures Mean and Standard Deviation Mean and Standard Deviation Voltage (kV) Current (mA) Time (s) 70 kV 6,72 mA ± 2,59 17,6s Table 3: Dose on the Crystalline Standard Exam Paediatric Exam Without radiological protection (mGy) 0,022 0,027 With radiological protection (mGy) 0,034 0,052 For the thyroid, dosimeters 2, 5, 8 and 11 (table 4). Table 4:...

Through the measurements on the phantom, the ESD the crystalline, thyroid and body, does not exceed the DRL stipulated by the European Guidelines (0.7 mGy). Compared to values ​​reported in other studies, the ESD measured in the lens is about average with 0.022 mGy analyzed in standard examinations and slightly higher in pediatric examinations (0.027 mGy). The efficiency level of protection used is concluded that barium protection use in panoramic radiography examinations DEP increases the level of the lens in an anthropomorphic phantom in 35.3%...

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