| Full text | |
| Author(s): |
Marcelo Tatit Sapienza
;
José Willegaignon
;
Carla Rachel Ono
;
Tomoco Watanabe
;
Maria Inês Calil Cury Guimarães
;
Ricardo Fraga Gutterres
[6]
;
Maria Helena da Hora Maréchal
[7]
;
Carlos Alberto Buchpiguel
Total Authors: 8
|
| Document type: | Journal article |
| Source: | Arquivos Brasileiros de Endocrinologia e Metabologia; v. 53, n. 3, p. 318-325, 2009-04-00. |
| Abstract | |
PURPOSE:To evaluate exposure and dosimetry to family members and environment due to outpatient radioiodine therapy of differentiated thyroid carcinoma. METHODS: Twenty patients were treated with 100-150mCi of iodine-131 on an out-patient basis. Family members dosimetry (n = 27) and potential doses inside the house were measured with thermoluminescent dosimeters. Surface contamination and radioactive wastes were also monitored. RESULTS: Less than 1.0 mSv doses were found in 26 co-habitants and 2.8 mSv in a single case (inferior to the acceptable value of 5.0 mSv/procedure). Potential doses in the houses were inferior to 0.25 mSv, excluding the patients bedroom (mean value = 0.69 mSv). Surface contamination (mean = 4.2 Bq.cm-2) were below clearance levels. Radioactive wastes generated had a volume of 2.5 liters and a total activity estimated in 90 µCi, with a calculated exposure close to the background radiation levels. CONCLUSIONS: No radiological impact was detected after iodine therapy with 100-150 mCi on an out-patient basis followed by experienced professionals. (AU) | |