scholarly journals Radiological Dose Calculations And Supplemental Dose Assessment Data For Neshap Compliance For SNL Nevada Facilities 1996.

2017 ◽  
Author(s):  
Not Given Author
Keyword(s):  
Dose Assessment ◽  
Dose Calculations ◽  
Assessment Data ◽  
Supplemental Dose ◽  
Radiological Dose

Web-Based Training Course for Evaluating Radiological Dose Assessment in NRC’s License Termination Process

2008 ◽  
Vol 95 (suppl 2) ◽  
pp. S137-S142 ◽  
Author(s):  
D LePoire ◽  
P Richmond ◽  
J -J. Cheng ◽  
S Kamboj ◽  
J Arnish ◽  
...  
Keyword(s):  
Dose Assessment ◽  
Web Based ◽  
Training Course ◽  
Radiological Dose ◽  
Termination Process

Radiological Dose Assessment for Clearance of Biological Shield Concrete from KRR-2

2008 ◽  
Vol 45 (sup5) ◽  
pp. 690-693 ◽  
Author(s):  
Sang Bum Hong ◽  
Gye Hong Kim ◽  
Hee Reyoung Kim ◽  
Mun Ja Kang ◽  
Un Soo Chung
Keyword(s):  
Dose Assessment ◽  
Radiological Dose

scholarly journals Post-Remediation Radiological Dose Assessment, Linde Site, Tonawanda, New York

2014 ◽  
Author(s):  
Sunita Kamboj ◽  
Lisa A. Durham
Keyword(s):  
New York ◽  
Dose Assessment ◽  
Radiological Dose

scholarly journals Evaluation of Quality control systems for X-Ray machines at different Hospitals using patient's radiological dose assessment technology

2014 ◽  
Vol 6 (5) ◽  
pp. 29-34 ◽  
Author(s):  
Rady Azzoz ◽  
◽  
Khaled M. ElShahat ◽  
Rezk Abdel MonemRezk
Keyword(s):  
Quality Control ◽  
Control Systems ◽  
Dose Assessment ◽  
X Ray ◽  
Assessment Technology ◽  
Radiological Dose

Regulatory Clearance of Spent Steel Drums

2011 ◽  
Author(s):  
Dae-Seok Hong ◽  
Yong-Yong Ji ◽  
Il-Sik Kang ◽  
Kyoung-Kil Kwak ◽  
Woo-Seog Ryu
Keyword(s):  
Scrap Metal ◽  
Radioactive Wastes ◽  
Assessment Model ◽  
Dose Assessment ◽  
Regulatory Body ◽  
Pressurized Water ◽  
Staff Members ◽  
Level Of Activity ◽  
Steel Drums ◽  
Radiological Dose

At KAERI (Korea Atomic Energy Institute), radioactive soil and concrete wastes with extremely low level of activity were regulatory cleared in 2008 and large amount of spent drums remained. After generation, drums having good physical integrity reused for packaging radioactive wastes and about 50 tons of drums unsuitable for reuse were stored as radioactive wastes. Having once been used for packaging regulatory cleared radioactive wastes, these spent drums were determined to be regulatory cleared. Before regulatory clearance, steel drums were radiation monitored, washed with pressurized water two times, compacted and stored at a designated area. Based on radiological dose assessment results using a recycling scenario derived from actual situation, the regulatory clearance of steel drums was permitted by the regulatory body. Treatment of the regulatory cleared drums was then committed to a scrap-metal dealer for recycling. In this study, a process of regulatory clearance for spent steel drums and a modified radiological dose assessment model for staff members of a scrap-metal dealer will be discussed.

MODELLING AND SIMULATION FOR RADIOLOGICAL DOSE ASSESSMENT OF PSAMMOTHERAPY AND CLIMATOTHERPY

2020 ◽  
Vol 188 (3) ◽  
pp. 276-284
Author(s):  
Kh A Allam
Keyword(s):  
Reference Point ◽  
Gamma Ray ◽  
Natural Radionuclides ◽  
Absorbed Dose ◽  
Dose Assessment ◽  
Beach Sand ◽  
Dose Rates ◽  
Occupational Dose ◽  
Mathematical Simulations ◽  
Radiological Dose

Abstract Patient and occupational dose rates due to psammotherapy (sand therapy) and climatotherapy treatments in high natural background areas in Egypt have been evaluated. Monte Carlo mathematical simulations using adult human phantoms were applied to consider the effect of elevated 238U, 232Th and 40K concentrations and the nonhomogeneous distribution of natural radionuclides in beach sand. Three situations: phantom covered by sand or lying on the beach and points in air at several heights above sand level, were considered. The gamma-ray doses per treatment were calculated at a reference point located on the phantom surface centrally above the genital area. The thus calculated patient-absorbed-dose ranges at this reference point were 0.006–0.018 mGy and 0.004–0.023 mGy per climatotherapy and psammotherapy treatments, respectively.

RADIOLOGICAL DOSE ASSESSMENT ACCORDING TO METHODOLOGIES FOR THE EVALUATION OF ACCIDENTAL SOURCE TERMS

2014 ◽  
Vol 39 (4) ◽  
pp. 176-181
Author(s):  
Hae Sun Jeong ◽  
Hyo Joon Jeong ◽  
Eun Han Kim ◽  
Moon Hee Han ◽  
Won Tae Hwang
Keyword(s):  
Dose Assessment ◽  
Source Terms ◽  
Radiological Dose

scholarly journals Uncertainty analysis of tumour absorbed dose calculations in molecular radiotherapy

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Domenico Finocchiaro ◽  
Jonathan I. Gear ◽  
Federica Fioroni ◽  
Glenn D. Flux ◽  
Iain Murray ◽  
...  
Keyword(s):  
Uncertainty Analysis ◽  
Spatial Resolution ◽  
Absorbed Dose ◽  
Dose Assessment ◽  
Dose Calculations ◽  
Time Activity ◽  
Molecular Radiotherapy ◽  
Wide Range ◽  
Dose Uncertainty ◽  
The Impact

Abstract Background Internal dosimetry evaluation consists of a multi-step process ranging from imaging acquisition to absorbed dose calculations. Assessment of uncertainty is complicated and, for that reason, it is commonly ignored in clinical routine. However, it is essential for adequate interpretation of the results. Recently, the EANM published a practical guidance on uncertainty analysis for molecular radiotherapy based on the application of the law of propagation of uncertainty. In this study, we investigated the overall uncertainty on a sample of a patient following the EANM guidelines. The aim of this study was to provide an indication of the typical uncertainties that may be expected from performing dosimetry, to determine parameters that have the greatest effect on the accuracy of calculations and to consider the potential improvements that could be made if these effects were reduced. Results Absorbed doses and the relative uncertainties were calculated for a sample of 49 patients and a total of 154 tumours. A wide range of relative absorbed dose uncertainty values was observed (14–102%). Uncertainties associated with each quantity along the absorbed dose calculation chain (i.e. volume, recovery coefficient, calibration factor, activity, time-activity curve fitting, time-integrated activity and absorbed dose) were estimated. An equation was derived to describe the relationship between the uncertainty in the absorbed dose and the volume. The largest source of error was the VOI delineation. By postulating different values of FWHM, the impact of the imaging system spatial resolution on the uncertainties was investigated. Discussion To the best of our knowledge, this is the first analysis of uncertainty in molecular radiotherapy based on a cohort of clinical cases. Wide inter-lesion variability of absorbed dose uncertainty was observed. Hence, a proper assessment of the uncertainties associated with the calculations should be considered as a basic scientific standard. A model for a quick estimate of uncertainty without implementing the entire error propagation schema, which may be useful in clinical practice, was presented. Ameliorating spatial resolution may be in future the key factor for accurate absorbed dose assessment.

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