Indian Journal of Nuclear Medicine

ORIGINAL ARTICLE
Year
: 2018  |  Volume : 33  |  Issue : 1  |  Page : 10--13

Impact of the amount of liquid intake on the dose rate of patients treated with radioiodine


Mahdi Haghighatafshar1, Aida Banani2, Banafsheh Zeinali-Rafsanjani1, Zahra Etemadi1, Tahereh Ghaedian1 
1 Nuclear Medicine and Molecular Imaging Research Center, Namazi Teaching Hospital, Shiraz University of Medical Sciences, Shiraz, Iran
2 Department of Nuclear Engineering, Faculty of Advanced Sciences and Technologies, University of Isfahan, Isfahan, Iran

Correspondence Address:
Dr. Tahereh Ghaedian
Nuclear Medicine and Molecular Imaging Research Center, Namazi Teaching Hospital, Shiraz University of Medical Sciences, Shiraz
Iran

Purpose: Despite therapeutic effects of radioiodine in patients with differentiated thyroid cancer, there are some disadvantages due to harmful radiation to other tissues. According to the current guidelines, patients are recommended to drink lots of water and frequent voiding to reduce the amount of 131I in the body. This study was designed to assess the impact of the amount of liquid intake on reduction of the measured dose rate of radioiodine-treated patients. Materials and Methods: A total of 42 patients with differentiated thyroid cancer without metastasis who had undergone total thyroidectomy and had been treated with radioiodine were selected. The patients were divided into two groups according to the amount of their fluid intake which was measured during the first 48 h after 131I administration. In all patients, the dose rate was measured immediately and 48 h after iodine administration. Results: Each group included 21 patients. Dose rate ratio (the ratio of the second dose rate to the first dose rate) and dose rate difference ratio (the ratio of the difference between the two measured dose rates to the first dose rate) were calculated for each patient. Despite the significant difference in the amount of the liquid drunk, no statistically significant difference was seen between the different groups in parameters of dose-rate ratio and dose-rate difference ratio. Conclusion: Higher fluid intake (>60 ml/h in our study) alone would not effectively reduce the patient's radiation dose rate at least not more than a well-hydrated state. It seems that other interfering factors in the thyroidectomized patients may also have some impacts on this physiologic process.


How to cite this article:
Haghighatafshar M, Banani A, Zeinali-Rafsanjani B, Etemadi Z, Ghaedian T. Impact of the amount of liquid intake on the dose rate of patients treated with radioiodine.Indian J Nucl Med 2018;33:10-13


How to cite this URL:
Haghighatafshar M, Banani A, Zeinali-Rafsanjani B, Etemadi Z, Ghaedian T. Impact of the amount of liquid intake on the dose rate of patients treated with radioiodine. Indian J Nucl Med [serial online] 2018 [cited 2019 Dec 15 ];33:10-13
Available from: http://www.ijnm.in/article.asp?issn=0972-3919;year=2018;volume=33;issue=1;spage=10;epage=13;aulast=Haghighatafshar;type=0