International Research Journal of Public and Environmental Health
Vol.6 (5),pp. 97-104, August 2019
Available online at https://www.journalissues.org/IRJPEH/
Author(s) retain the copyright of this article. Author(s) agree that this article remain permanently open access under the terms of the Creative Commons Attribution License 4.0 International License.
Original Research Article
Effective radiation dose evaluation in nuclear medicine examination
Hassan Salah1,2, Yosif Hamza1, Fareed Mayhoub3, Mohamed Yousif1,4, Mohammed Alkhorayef5 and A. Sulieman6*
1College of Medical Radiologic Science, Sudan University of Science and Technology, P.O. Box 1908, Khartoum 11111, Sudan.
2Inaya Medical Collage, Riyadh, Saudi Arabia.
3Biomedical Physics Department, King Faisal Specialist hospital and Research Centre (KFSH&RC)Riyadh, Saudi Arabia.
4Department of Applied Radiation Technology, College of Applied Medical Science, University of Jeddah,Jeddah 23218, Saudi Arabia.
5Radiological Sciences Department, College of Applied Medical Sciences, King Saud University, Saudi Arabia.
6Radiology and Medical Imaging Department,, College of Applied Medical Sciences, Prince Sattam bin Abdulaziz University, Alkharj, Kingdom of Saudi Arabia.
*Corresponding Author Email: Abdelmoneim_a(at)yahoo.com
Radiopharmaceuticals are used in nuclear medicine to obtain diagnostic findings based on justified clinical indications according to patient age, weight, and body mass index (BMI) to approve a reasonable low amount of attainable radiation dose without affecting the quality of the image. This study intended to assess patient effective dose in the cardiac, bone, thyroid and renal scan procedures. The current study was conducted at two nuclear medicine departments in Sudan (Al-Neeleen Diagnostic Centre (NDC) and Radiation Isotope Centre Khartoum (RICK)). A total of 193 procedures were performed at the two nuclear medicine departments using technetium 99mTc isotope. Effective doses were estimated using computer software based on administered activity. The mean patients weight in cardiac, bone, thyroid and renal scans were 73.8±13, 64.8±19.6, 63.8±15.1, and 67.3±28.1 kg, respectively. The mean administered activity and effective dose per procedure were 810±246 and 7.1±2 for cardiac scan, 796.8±58.2 and 4.6±0.31 for bone scan, 195.1±21.2 and 2.6±0.27 for thyroid scan, and 198.6±32.9 MBq and 0.97±0.16 mSv for renal scan, respectively. Because administered activity depends on the procedure type and patient weight, it was 3 times higher in cardiac scan compared to thyroid scan. The results of this study revealed that patient’s doses were lower compared to previous published studies.
Key words: Radionuclide dosimetry, radiation exposure, 99mTc, radiation risk.