scholarly journals Patient external dose rate after 177Lu-DOTATATE therapy: factors affecting its decrease and predictive value

2021 ◽  
Vol 18 (12) ◽  
pp. 2725-2735
Author(s):  
Jules Zhang-Yin ◽  
Nadine Guilabert ◽  
Thierry Kiffel ◽  
Françoise Montravers ◽  
Phillip Calais ◽  
...  
Keyword(s):  
Dose Rate ◽  
Predictive Value ◽  
Factors Affecting ◽  
External Dose

Criteria for patient release according to external dose rate and residual activity in patients treated with131 I-sodium iodide in Iran

2011 ◽  
Vol 147 (1-2) ◽  
pp. 264-266 ◽  
Author(s):  
N. Ahmadi Jeshvaghane ◽  
R. Paydar ◽  
B. Fasaei ◽  
A. Pakneyat ◽  
A. Karamloo ◽  
...  
Keyword(s):  
Dose Rate ◽  
Sodium Iodide ◽  
Residual Activity ◽  
External Dose

EXTERNAL DOSE RATE MONITORING IN FINLAND: HISTORY, EXPERIENCES AND A GLIMPSE AT THE FUTURE

2019 ◽  
Vol 187 (2) ◽  
pp. 249-261
Author(s):  
J Lahtinen ◽  
J Koivukoski
Keyword(s):  
Dose Rate ◽  
External Radiation ◽  
Development Stages ◽  
Regular Monitoring ◽  
External Dose ◽  
Major Development ◽  
The Future ◽  
Fully Automatic

Abstract Finland has a long history in monitoring external radiation. Regular monitoring began in the early 1960s when the first networks measuring exposure rates were established. Today the nation-wide network is fully automatic and consists of about 260 stations with Geiger-Műller (GM) tubes. Some 25 stations also have a LaBr3 spectrometer. In this article the authors describe the history, experiences and major development stages of the Finnish dose rate monitoring arrangements and also have a brief look at the possible future.

Development of Safety Assessment Code for Decommissioning of Nuclear Facilities (DecDose)

2009 ◽  
Author(s):  
Taro Shimada ◽  
Soichiro Ohshima ◽  
Takenori Sukegawa
Keyword(s):  
Dose Rate ◽  
Safety Assessment ◽  
Ventilation System ◽  
Cutting Speed ◽  
Liquid Waste ◽  
Atomic Energy ◽  
Internal Dose ◽  
Nuclear Facilities ◽  
The Public ◽  
External Dose

A safety assessment code, DecDose, for decommissioning of nuclear facilities has been developed, based on the experiences of the decommissioning project of Japan Power Demonstration Reactor (JPDR) at Japan Atomic Energy Research Institute (now Japan Atomic Energy Agency). DecDose evaluates the annual exposure dose of the public and workers according to the progress of decommissioning of the plant, and also evaluates the public dose at accidental situations including fire and explosion. The public dose at normal situations during decommissioning is evaluated from the amount of radionuclides discharged from the plant to the atmosphere and the ocean. The amounts of radionuclides discharged depend on which and how activated and/or contaminated components and structures are dismantled. The amount is predicted by using the radioactive inventory given by the plant. The filtration efficiency of the ventilation system and decontamination factors of the liquid waste treatment system of the plant are also considered. Both of the internal dose caused by inhalation and ingestion of agricultural crops and seafood, and the external dose by radioactive aerosols airborne and radioactive deposition at soil surfaces are calculated for all of possible pathways. Also included in the external dose are direct radiation and skyshine radiation from waste containers which are packed and temporarily stored in the in-site building. For external dose of workers, the radiation dose rate from dismantling contaminated components and structures is calculated using the dose rate library which was previously evaluated by a point kernel shielding code. In this condition, radiation sources are regarded to be consisted of two parts; one is a dismantling object of interest, and the other is the sum of surrounding objects. Difference in job type or position is taken into account; workers for cutting are situated closer to a dismantling component, other workers help them at some distance, and the supervisor watches their activities from away. For worker’s internal dose, the radionuclide concentrations in air for individual radionuclides are calculated from a dismantling condition, e.g. cutting speed, cutting length of the dismantling component and exhaust velocity. A calculation model for working time on dismantling was developed using more segmented WBS (work breakdown structure). DecDose was partially verified by comparison with measured the external dose of workers during JPDR Decommissioning Project. The DecDose is expected to contribute to utilities in formulating rational dismantling plans and to the safety authority in estimating conservativeness in safety assessment of licensing application or risk-based regulatory criteria.

The evaluation of external dose rate measurements of patients during and after F-18 FDG PET/CT imaging and appropriate discharge time from PET/CT department

2019 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
Burçak Yılmaz Güneş ◽  
Özlem Erez ◽  
Cihan Gündoğan ◽  
Nurhan Ergül
Keyword(s):  
Dose Rate ◽  
Fdg Pet ◽  
Ct Imaging ◽  
Discharge Time ◽  
External Dose ◽  
Pet Ct ◽  
Fdg Pet Ct

Considering sedimentary U uptake in external dose rate determinations for ESR and luminescent dating

2000 ◽  
Vol 68-71 ◽  
pp. 329-343 ◽  
Author(s):  
Bonnie A.B Blackwell ◽  
Joel I.B Blickstein
Keyword(s):  
Dose Rate ◽  
External Dose

Predictive Value of Factors affecting Early Results and Complications in Eight Years of Coronary Artery Bypass Surgery

1989 ◽  
Vol 37 (06) ◽  
pp. 355-360 ◽  
Author(s):  
E. Ståhle ◽  
R. Bergström ◽  
S.-O. Nyström ◽  
H.-E. Hansson
Keyword(s):  
Coronary Artery ◽  
Coronary Artery Bypass ◽  
Predictive Value ◽  
Coronary Artery Bypass Surgery ◽  
Bypass Surgery ◽  
Artery Bypass ◽  
Factors Affecting ◽  
Early Results

scholarly journals Radiation dose rates now and in the future for residents neighboring restricted areas of the Fukushima Daiichi Nuclear Power Plant

2014 ◽  
Vol 111 (10) ◽  
pp. E914-E923 ◽  
Author(s):  
Kouji H. Harada ◽  
Tamon Niisoe ◽  
Mie Imanaka ◽  
Tomoyuki Takahashi ◽  
Katsumi Amako ◽  
...  
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Radiation Dose ◽  
Radiation Exposure ◽  
Dose Rate ◽  
Nuclear Power ◽  
Solid Cancer ◽  
External Dose ◽  
Dose Rates ◽  
Fukushima Daiichi

Radiation dose rates were evaluated in three areas neighboring a restricted area within a 20- to 50-km radius of the Fukushima Daiichi Nuclear Power Plant in August–September 2012 and projected to 2022 and 2062. Study participants wore personal dosimeters measuring external dose equivalents, almost entirely from deposited radionuclides (groundshine). External dose rate equivalents owing to the accident averaged 1.03, 2.75, and 1.66 mSv/y in the village of Kawauchi, the Tamano area of Soma, and the Haramachi area of Minamisoma, respectively. Internal dose rates estimated from dietary intake of radiocesium averaged 0.0058, 0.019, and 0.0088 mSv/y in Kawauchi, Tamano, and Haramachi, respectively. Dose rates from inhalation of resuspended radiocesium were lower than 0.001 mSv/y. In 2012, the average annual doses from radiocesium were close to the average background radiation exposure (2 mSv/y) in Japan. Accounting only for the physical decay of radiocesium, mean annual dose rates in 2022 were estimated as 0.31, 0.87, and 0.53 mSv/y in Kawauchi, Tamano, and Haramachi, respectively. The simple and conservative estimates are comparable with variations in the background dose, and unlikely to exceed the ordinary permissible dose rate (1 mSv/y) for the majority of the Fukushima population. Health risk assessment indicates that post-2012 doses will increase lifetime solid cancer, leukemia, and breast cancer incidences by 1.06%, 0.03% and 0.28% respectively, in Tamano. This assessment was derived from short-term observation with uncertainties and did not evaluate the first-year dose and radioiodine exposure. Nevertheless, this estimate provides perspective on the long-term radiation exposure levels in the three regions.

scholarly journals The Study of External Dose Rate and Retained Body Activity of Patients Receiving 131I Therapy for Differentiated Thyroid Carcinoma

2014 ◽  
Vol 11 (10) ◽  
pp. 10991-11003 ◽  
Author(s):  
Haiying Zhang ◽  
Ling Jiao ◽  
Songye Cui ◽  
Liang Wang ◽  
Jian Tan ◽  
...  
Keyword(s):  
Thyroid Carcinoma ◽  
Dose Rate ◽  
Differentiated Thyroid Carcinoma ◽  
131I Therapy ◽  
External Dose ◽  
Body Activity
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