Reducing Radiation Exposure from PET Patients.

Autor:	Dannoon SF; Nuclear Medicine Department, Faculty of Medicine, Kuwait University, Jabryia, Kuwait; sdannoon@hsc.edu.kw.; Nuclear Medicine Department, Mubarak Hospital, Ministry of Health, Jabryia, Kuwait., Alenezi S; Nuclear Medicine Department, Faculty of Medicine, Kuwait University, Jabryia, Kuwait.; Nuclear Medicine Department, Farwania Hospital, Ministry of Health, Farwania, Kuwait; and., Alnafisi N; Nuclear Medicine Department, Faculty of Medicine, Kuwait University, Jabryia, Kuwait.; Nuclear Medicine Department, Mubarak Hospital, Ministry of Health, Jabryia, Kuwait., Almutairi S; Nuclear Medicine Department, Faculty of Medicine, Kuwait University, Jabryia, Kuwait., Dashti F; Nuclear Medicine Department, Farwania Hospital, Ministry of Health, Farwania, Kuwait; and., Osman MM; Department of Radiology, Division of Nuclear Medicine, St. Louis University, St. Louis, Missouri., Elgazzar A; Nuclear Medicine Department, Faculty of Medicine, Kuwait University, Jabryia, Kuwait.; Nuclear Medicine Department, Mubarak Hospital, Ministry of Health, Jabryia, Kuwait.
Jazyk:	angličtina
Zdroj:	Journal of nuclear medicine technology [J Nucl Med Technol] 2022 Sep; Vol. 50 (3), pp. 263-268. Date of Electronic Publication: 2022 Apr 19.
DOI:	10.2967/jnmt.121.263223
Abstrakt:	This study measured the typical emitted radiation rate from the urinary bladder of PET patients after their scan and investigated simple methods for reducing the emitted radiation before discharge. Methods: The study included 83 patients (63 18 F-FDG and 20 18 F-NaF patients). Emitted radiation from the patients' urinary bladder was measured with an ionization survey meter at a 1-m distance, presuming the urinary bladder to be the primary source of radiation. The measurements were taken at different time points after PET image acquisition: immediate (prevoid 1), voided (postvoid 1), after waiting 30 min in the uptake room while drinking 500 mL of water (prevoid 2), and voided again (postvoid 2). Results: For 18 F-FDG patients, the reduction of emitted radiation due to drinking water and voiding alone from prevoid 1 to decay-corrected postvoid 2 was an average of 22.49% ± 7.48% (13.65 ± 3.42 μSv/h to 10.48 ± 2.37 μSv/h, P < 0.001). For 18 F-NaF patients, the reduction was an average of 25.80% ± 10.03% (9.83 ± 2.01 μSv/h to 7.23 ± 1.49 μSv/h, P < 0.001). Conclusion: In addition to the physical decay of the radiotracers, using the biologic clearance properties resulted in a significant decrease of the emitted radiation in this study. Implementing additional water consumption to facilitate voiding with 30 min of wait time before discharging certain 18 F-FDG and 18 F-NaF patients who need to be in close contact with others, such as elderly, caregivers, and inpatients, might facilitate lowering their emitted radiation by an average of 22%-25% due to voiding, not counting in the physical decay that should add an additional 17% reduction. (© 2022 by the Society of Nuclear Medicine and Molecular Imaging.)
Databáze:	MEDLINE
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