Dose absorbed by technologists in positron emission tomography procedures with FDG

Amaral, Ademir; Itié, C.; Bok, B.

doi:10.1590/s1516-89132007000600016

Cited by 10 publications

(9 citation statements)

References 11 publications

(10 reference statements)

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“…Use of primary syringe shields (dedicated for 511 keV) can reduce the average dose per injection by approximately 44% (from 6.8 nSv MBq À1 with unshielded syringe to 3.8 nSv MBq À1 with shielded syringe) (Roberts et al, 2005). The wrist dose was reduced by approximately 50% by the use of syringe shields (15 nSv MBq À1 with unshielded syringe to 7.5 nSv MBq À1 with shielded syringe) (Amaral et al, 2007). Reductions of 35% in the left hand and 33% in the right hand were obtained by shielding the syringe (Demir et al, 2010).…”

Section: Shieldingmentioning

confidence: 99%

Trends in radiation protection of positron emission tomography/computed tomography imaging

Alenezi

Soliman

2014

Ann ICRP

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Over the past decade, the number of positron emission tomography/computed tomography (PET/CT) imaging procedures has increased substantially. This imaging technique provides accurate functional and anatomical information, particularly for oncological applications. Separately, both PET and CT are considered as high-dose imaging modalities. With the increased use of PET/CT, one could expect an increase in radiation doses to staff and patients. As such, major efforts have been made to reduce radiation dose in PET/CT facilities. Variations in working techniques have made it difficult to compare published results. This study aimed to review the literature on proposed methods to reduce patient and staff dose in clinical PET/CT imaging. A brief overview of some published information on staff and patient doses will be analysed and presented. Recent trends regarding radiation protection in PET/CT imaging will be discussed, and practical recommendations for reducing radiation doses to staff and patients will be discussed and summarised. Generally, the CT dose component is often higher in magnitude than the dose from PET alone; as such, focusing on CT dose reduction will decrease the overall patient dose in PET/CT imaging studies. The following factors should be considered in order to reduce the patient's dose from CT alone: proper justification for ordering contrast-enhanced CT; use of automatic exposure control features; use of adaptive statistical iterative reconstruction algorithms; and optimisation of scan parameters, especially scan length. The PET dose component can be reduced by administration of lower activity to the patient, optimisation of the workflow, and appropriate use of protective devices and engineered systems. At the international level, there is wide variation in work practices among institutions. The current observed trends are such that the annual dose limits for radiation workers in PET/CT imaging are unlikely to be exceeded.

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Section: Shieldingmentioning

confidence: 99%

Trends in radiation protection of positron emission tomography/computed tomography imaging

Alenezi

Soliman

2014

Ann ICRP

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“…[2] Furthermore, they are trained in radiation protection,[3] and they are under stricter medical surveillance than most workers in other fields,[4] where open sources of radiation are handled and radioisotope is administered to the patients in the form of radiopharmaceuticals within the patient who will be a moving source of radiation. [5]…”

Section: Introductionmentioning

confidence: 99%

Statistical analysis of the occupational radiation doses in three different positron emission tomography–computed tomography centers in Egypt

Ahmed

Zamzam²,

Yassin

2019

World J Nucl Med

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In the present study, we investigated the radiation doses received by the positron emission tomography (PET)/computed tomography (CT) staff in three different diagnostic centers in Egypt. The whole-body effective dose measured by thermoluminescent dosimeters (TLDs) for staff working in PET and the effective dose per study received by physicist, technician, and nurse were measured by an electronic pocket dosimeter (EPD) during a period of 6 months. Statistical analysis was held between the measurements of the TLDs as well as for the EPD for the three studied PET-CT centers. After combining TLD and EPD prospective annual scores for the three studied categories in the three centers, the one-way ANOVA test results have shown that there were statistically significant differences between group means with respect to their TLD mean score ( P = 0.041). The mean nurse group TLD score, across the three centers, appeared to be the lowest scoring 3.83 (standard deviation [SD] 0.012) compared to the physicist and technician who measured 4.62 (SD 0.231) and 6.92 (SD 0.018), respectively. Scheffe's test for complex comparisons revealed a significant difference between nurse group and technologist group ( P = 0.001). Regarding the annual combined EPD scores, the post hoc test, namely Scheffe's test for complex comparisons, revealed a significant difference between nurse group and technologist group ( P = 0.001). This was measured after the one-way ANOVA test results have shown that there were statistically significant differences between annual group EPD means ( P = 0.032). Finally, there was no recorded significance for the studied categories across the three centers between their annual TLD and EPD dose scores ( P = 0.072). Technicians group received the highest mean effective whole-body doses when compared with the International Commission on Radiological Protection dose limit, each individual worker can work with many more 18F-fluorodeoxyglucose (FDG) PET/CT studies for a (period time) without exceeding the occupational dose limits if the average received effective dose continues with the same rate. The study also confirmed that low levels of radiation dose are received by medical personnel involved in 18F-FDG PET/CT procedures in those centers due to implementing radiation protection measures and procedures.

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“…Since new techniques of imaging are used and new measurements concerning the doses to medical staff are needed [9]. This has motivated several studies for better perception of the radiation dose levels received by medical staff under taking imaging with positron-emitter tracers [10] [11] [12].…”

Section: Introductionmentioning

confidence: 99%

Occupational Radiation Exposure to Workers Used18F-FDG

Wabdan

2019

MJS

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The increasing interest of medical institutes in the development of imaging services to include the hybrid system [Positron Emission Tomography combined with Computed Tomography(PET/CT)], this system is acquiring explosive growth due to its ability to accurately detect and stage many types of cancer and follow the progress of treatments. An increasing demand for use of (18F-FDG PET) in oncology has been the main reason for its growth. The physical characteristics of positron emissions result in higher radiation risk for staff and growing use of PET/CT for diagnostic purposes increase radiation exposure. The objective of this study was to estimate the radiation exposure to the medical physicists, technicians and nurses working in three Egyptian nuclear medicine institutes under our investigations, based on the whole body collective dose measured by thermoluminescent dosimeters (TLDs) and the effective dose per study received by medical staff were measured by electronic pocked dosimeters and the finger doses by ring dosimeter during a period of six months. The (mean± SD) dose measured per PET/CT procedure were (2.45±0.137, 3.22±0.218 and 1.69±0.11) μSv for the medical physicist, technician and nurse respectively. The (mean± SD) dose measured per MBq of 18F-FDG were (7.35±0.43, 9.73±0.66 and 5.13±0.33) nSv/MBq for the medical physicist, technician and nurse respectively. The (mean± SD) finger dose measured per 18F-FDGPET/CT scans were (179.9±24.94, 8.82±2.912 and 24.15±4.164) μSv for the medical physicist, technician and nurse respectively.

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Dose absorbed by technologists in positron emission tomography procedures with FDG

Cited by 10 publications

References 11 publications

Trends in radiation protection of positron emission tomography/computed tomography imaging

Trends in radiation protection of positron emission tomography/computed tomography imaging

Statistical analysis of the occupational radiation doses in three different positron emission tomography–computed tomography centers in Egypt

Occupational Radiation Exposure to Workers Used18F-FDG

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