Browse > Article

Analysis of Relationship Between Injection Dose and Exposure Dose in PET/CT Scan: Initial Study  

Park, Hoon-Hee (Department of Radiological Technology, Shingu University)
Lyu, Kwang-Yeul (Department of Radiological Technology, Shingu University)
Publication Information
Journal of radiological science and technology / v.34, no.4, 2011 , pp. 351-357 More about this Journal
Abstract
The $^{18}F$-FDG is one of the widely used isotopes for PET/CT scans. Dose amount injected to the patient depends on the characteristics of PET/CT systems. Obviously, the technologists who contact with patients would be exposed as well. In this study, we evaluated the exposed dose of the technologist who works on the PET/CT scanner. The exposed dose were measured every month with the TLDs from 6 technologists. Each technologist is shift-worker who manages 3 different PET/CT systems(Scanner 1(S1): 0.15 mCi/kg, Scanner 2(S2): 0.17 mCi/kg, Scanner 3(S3): 0.12 mCi/kg). The average exposed doses of technologists for each PET/CT system were measured as 0.76 mSv for S1, 0.93 mSv for S2 and 0.47 mSv for S3. The maximum dose was 1.12 mSv and minimum was 0.42 mSv. The results showed that there was a correlation between exposed dose and PET/CT system(p<0.005). Less injected dose for patient occurs less exposed dose for technologist. Various studies for the low dose PET/CT system are required for not only the patient but also the technologist.
Keywords
PET/CT; Exposure Dose; Injection Dose;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Hasegawa BH, Iwata K, Wong KH. Dual - modality imaging of function and physiology. AcadRadiol; 9:1305-21, 2002
2 Kim HJ. Current status of imaging physics and instrumentation in nuclear medicine. Nucl Med Mol Imaging; 42(2):83-87, 2008
3 Hendee WR. Real and perceived risks of medical radiation exposure. West J Med; 11(1): 380-386, 1998
4 ICRP Report 60. Recommendation of the international commission on radiological protection. Pergamon Press, 1990
5 Kearns WT, Urbanic JJ, Hampton CJ, McMullen KP, Blackstock AW, Stieber VW, Hinson WH. Radiation safety issues with positron-emission/ computed tomography simulation for stereotactic body radiation therapy. J ApplClin Med Phys; 9(3):2736-2740, 2008
6 Lang TF, Hasegawa BH, Liew SC, Brown JK, BlankespoorSc, Reilly SM, Gingold EL, Cann CE. Description of a prototype emission - transmission CT system. J Nucl Med; 33(10): 1881- 1887, 1992
7 Miller RW. Lowdose radiation exposure. West J Med; 24(1): 1166-1167, 1990
8 Robinson CN, Young JG, Ibbetson VJ.A study of the personl radiation dose received by nuclear medicine technologists working in a dedicated PET center. Health Phys; 88(suppl 1):17S-21S, 2005   DOI
9 Benatar NA, Cronin BF, O'Doherty MJ. Radiation dose rates from patients undergoing PET: implication for technologists and waiting areas. Eur J Nucl Med; 27(5):583-589, 2000   DOI
10 Cherry SR, Sorenson JA, Phelps ME. Physics in nuclear medicine. 3rd ed. Saunders; p.325-329, 2003
11 Gambhir SS. A tabulated summary of the FDG PET literature. J Nucl Med;42(suppl 5): 1S-79S, 2001
12 Guillet B, Quentin P, Waultier S, Bourrelly M, Pisano P. Olivier Mundler. Techologist radiation exposure in routine clinical practice with $^{18}F$-FDG PET. J Nucl Med Technol; 33: 175-179, 2005