Research of radiation dose rate around patients underwent renal dynamic imaging of SPECT with 99Tcm-DTPA
10.3969/J.ISSN.1672-8270.2017.09.007
- VernacularTitle:99Tcm-DTPA SPECT肾动态显像患者周围剂量率的研究
- Author:
Zuowei ZOU
;
Jianhua GENG
;
Rong ZHENG
- Keywords:
99Tcm-Diethylenetriamine pentaacetic acid;
Renal dynamic imaging;
Patients;
Dose rate
- From:
China Medical Equipment
2017;14(9):23-26
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To study the radiation dose rate around patients underwent renal dynamic imaging of SPECT with 99Tcm-DTPA, so as to provide the basis for ensuring the radiation safety of the surrounding environment and the general public.Methods: 109 patients who underwent renal dynamic imaging were enrolled in this study, and the radiation dose rates of different time and different distance after 99Tcm-DTPA was injected patients were measured. And then, the changes of dose rate following time and distance were analyzed. Results: At the 0.5h, 1h, 2h, 3h, 6h, and 7h after radiopharmaceuticals were injected patients underwent renal dynamic imaging, the radiation dose rates were 0.76-8.86 μSv/h, 0.68-7.27 μSv/h, 0.57-4.52 μSv/h, 0.56-3.90 μSv/h, 0.23-2.07 μSv/h and 0.21-1.05 μSv/h, respectively, between 0.5 m and 4 m away from patients. At 24h after radiopharmaceuticals were injected, all of radiation dose rates at different distances around patients were same with background values.Conclusion: The radiation dose rates around patients underwent renal dynamic imaging will rapidly decrease with the increasing of time and distance. At 24h after radiopharmaceuticals were injected, all of radiation dose rates at different distances away from patients were same with background values.
