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Borate Phosphors for Radiation Dosimetery
Published in S. K. Omanwar, R. P. Sonekar, N. S. Bajaj, Borate Phosphors, 2022
Dosimetry technique is extensively used for radiation protection and routinely applied for occupational radiation workers where radiation dose is expected, without exceeding regulatory level. It is also used where radiation is unexpected, such as in the outcome of Three Mile Island, Chernobyl or Fukushima radiological release incidents, where the public dose is measured and calculated from a variety of indicators such as ambient dosimetry of radiation and radioactive contamination.
Radiation Therapy and Radiation Safety in Medicine
Published in Suzanne Amador Kane, Boris A. Gelman, Introduction to Physics in Modern Medicine, 2020
Suzanne Amador Kane, Boris A. Gelman
The absorbed dose cannot be measured directly, but it can be inferred from other measurable quantities. Radiation dosimetry involves methods developed to assess and control the doses delivered during therapeutic and diagnostic imaging procedures. For beam sources of radiation used in radiography and therapy, the exposure in roentgens can be measured directly, using an ionization detector. This then can be converted into an absorbed dose, using appropriate correction factors to go between the measured quantity (ionization of air) to the desired one (the absorbed dose). For imaging or therapy performed with radionuclides, the absorbed dose from a procedure (the dose commitment) must be computed from the administered source activity, half-life, and exposure time.
New Dosimetry Materials, Devices, and Systems
Published in Siyong Kim, John Wong, Advanced and Emerging Technologies in Radiation Oncology Physics, 2018
Radiation therapy is rapidly evolving, and the demand for new dosimetry methods, materials, and systems is high. New developments in conventional detectors focus on decreasing the size of systems to increase spatial resolutions, increasing robustness for new environments, and increasing the ease of use, allowing for the improvement of clinical workflow. Clear understanding of the pros and cons of each detector and dosimetry system will ensure the proper application of new technologies.
Requirements engineering of Malaysian radiological medical emergency response simulator
Published in Journal of Information and Telecommunication, 2018
Amy Hamijah binti Ab. Hamid, Mohd Zaidi Abd Rozan, Roliana Ibrahim, Safaai Deris, Ali Selamat, Muhd. Noor Muhd. Yunus
The medical treatment and populations’ decontamination are activated at the earliest minutes to hours of the RN disaster and emergency. Following that, the intermediate medical care is implemented from hours to days into the later phase of months and years respectively. This action indicated the execution of the respective radiological medical triage. This triage identified the patients’ radiation exposure levels based on the characteristics of the acute radiation poisoning signs and symptoms. The poisoning verification refers to the patients’ radiation sickness, which is believed to be radiological exposed only, contaminated only, both contaminated and exposed, and neither has been contaminated nor exposed. Consequently, the ongoing medical treatment of dedicated radiation injuries based on elaborated medical management can be defined as in (Waller et al., 2009). Additionally, radiation dosimetry is provided to evaluate the radiation dose exposure of the responders and public using physical measurements, predicted values and use of biological markers. Accordingly, this research proposed empowering people by increasing public awareness of emergencies and recommending personal preparedness plans (Kuljis, Paul, & Stergioulas, 2007).