Evaluating the Risk to Ostomy Patients Working With Uranium Using the ICRP Biokinetic Model for the Gastrointestinal Tract
نویسندگان
چکیده
....................................................................................................................................................... iii List of Tables ................................................................................................................................................ vi List of Figures ................................................................................................................................................ x Key Terms .................................................................................................................................................... xii 1.0 Introduction ............................................................................................................................................ 1 2.0 Background ............................................................................................................................................. 3 2.1 Internal Dosimetry .............................................................................................................................. 3 2.2 Dosimetry Principles ........................................................................................................................... 3 2.3 Annual Limit on Intake ........................................................................................................................ 5 2.4 Skin Dose Calculation .......................................................................................................................... 6 2.5 ICRP Publication 30 Dosimetric Model for the Gastrointestinal Tract................................................ 6 2.6 ICRP 100 Human Alimentary Tract Model .......................................................................................... 8 2.6.1. Transit Times ............................................................................................................................. 11 2.6.2 Absorbed Fraction ...................................................................................................................... 12 2.6.3 Absorption, Retention, and Secretion of Radionuclides ............................................................ 12 2.6.4 Details of the Colon .................................................................................................................... 13 2.7 ICRP 30 Metabolic Data for Uranium ................................................................................................ 14 2.8 ICRP 69 Uranium Systemic Model ..................................................................................................... 15 2.9 Gastrointestinal Procedures ............................................................................................................. 18 2.9.1 Colostomy .................................................................................................................................. 19 2.9.2 Descending and Sigmoid Colostomies ....................................................................................... 21 2.2.3 Transverse Colostomy ................................................................................................................ 21 2.2.4 Ascending Colostomy ................................................................................................................. 22 2.3 Ileostomy .......................................................................................................................................... 22 3.0 Model Development ............................................................................................................................. 24 3.1 MATLAB Simulink .............................................................................................................................. 24 3.2 MATLAB Simulink Modeling .............................................................................................................. 24 3.3 Development of Baseline Model....................................................................................................... 31 3.4 Benchmarking the Baseline Model ................................................................................................... 32
منابع مشابه
Estimation of uranium GI absorption fractions for children and adults.
Uranium is ubiquitously found in drinking water and food. The gastrointestinal tract absorption fraction (f(1)) is an important parameter in risk assessment of uranium burdens from ingestion. Although absorption of uranium from ingestion has been studied extensively in the past, human data concerning children and adults are still limited. In a previous study based on measurements of uranium con...
متن کاملInternal dosimetry of radioiodine using ICRP reference phantoms and updated biokinetic model
The purpose of this study is to estimate internal dose to human body due to administration of I-131 using new biokinetic model of iodine. In this respect, we used international commission on radiological protection (ICRP) adult reference phantoms. Monte Carlo calculations were performed using MCNPX 2.6 code. The average dose to target organ per disintegration inside source organ, namely S facto...
متن کاملAssessment relationship between Body-esteem and perceived social support in patients with ostomy in the Iranian Ostomy Association
Introduction: Colorectal cancer is a progressive gastrointestinal disease that leads to the insertion of an ostomy for patients. On the other hand, the manifestations and complications caused by the insertion of the ostomy cause many physical and mental problems for the patient. The aim of this study was to investigate the relationship between body-esteem and perceived social support in patient...
متن کاملEvaluating Commercial Macroporous Resin (D201) for Uranium Uptake in Static and Dynamic Fixed Bed Ion Exchange Column
As part of the development of equipment and innovative technology for the process flow-sheet, a study on the selection of good resin for uranium uptake is ongoing. Both static and dynamic column equilibrium testing upon synthetic and Gattar pregnant leach solutions (PLS) were carried out to estimate the change of total capacity and breakthrough capacity of the commercial macroporous anion excha...
متن کامل131I age-dependent inhalation dose in Southern Poland from Fukushima accident
A general method for calculating doses absorbed from isotopes released in nuclear accidents is presented. As an example, this method was used to calculate doses for inhabitants of Southern Poland due to inhalation of 131I released due to the Fukushima nuclear plant accident. 131I activity measurements in the air of that region provided the basis for the study. The proposed model is based on a c...
متن کامل