The Progress of ICRP New Recommendations

2010 ◽  
Author(s):  
Aiguo Shang ◽  
Changjie Lu ◽  
Jin Qin
Keyword(s):  
Comparative Analysis ◽  
Dose Rate ◽  
Low Dose ◽  
System Analysis ◽  
Weighting Factor ◽  
Radiological Protection ◽  
Stochastic Effects ◽  
Risk Coefficient ◽  
Low Dose Rate ◽  
Radiation Induced

In order to probe into the usage of the Recommendations of the ICRP, through comparative analysis of low-dose-rate radiation-induced stochastic effects of a nominal risk coefficient, radiation weighting factor, tissue weighting factor as well as the the implementation of changes on the radiological protection system, analysis of the international on Radiological Protection fundamental recommendations of the Committee on the latest changes in radiological protection and development, and that these changes can not affect the existing radiation protection of China’s basic policy and standards.

Low Doses of Very Low-Dose-Rate Low-LET Radiation Suppress Radiation-Induced Neoplastic TransformationIn Vitroand Induce an Adaptive Response

2008 ◽  
Vol 169 (3) ◽  
pp. 311-318 ◽  
Author(s):  
E. Elmore ◽  
X-Y. Lao ◽  
R. Kapadia ◽  
E. Giedzinski ◽  
C. Limoli ◽  
...  
Keyword(s):  
Dose Rate ◽  
Adaptive Response ◽  
Low Dose ◽  
Low Doses ◽  
Low Dose Rate ◽  
Radiation Induced

Radiation-Induced Segregation in 316 and 304 Stainless Steels Irradiated at Low Dose Rate

2000 ◽  
Vol 650 ◽  
Author(s):  
T. R. Allen ◽  
J. I. Cole ◽  
J. Ohta ◽  
K. Dohi ◽  
H. Kusanagi ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Grain Boundary ◽  
Dose Rate ◽  
Stainless Steels ◽  
Low Dose ◽  
Bulk Composition ◽  
304 Stainless Steel ◽  
316 Stainless Steel ◽  
Low Dose Rate ◽  
Radiation Induced

ABSTRACTAs part of the shutdown of the EBR-II reactor, structural materials were retrieved to analyze the effects of long-term irradiation on mechanical properties and microstructure. In this work, the effect of low dose rate irradiation (10−7 to 10−8 dpa/s) on grain boundary composition in 316 and 304 stainless steels was analyzed. Samples were taken from surveillance specimens and subassemblies irradiated in the reflector region of EBR-II at temperatures from 371-390°C to maximum doses of 30 dpa. The effects of dose, dose rate, and bulk composition on radiation- induced segregation are analyzed. In 316 stainless steel, changes in grain boundary chromium and nickel concentrations occur faster than changes in iron and molybdenum concentrations. In 304 stainless steel, decreasing the dose rate increases the amount of grain boundary segregation. For a dose of 20 dpa, chromium depletion and nickel enrichment are greater in 304 stainless steel than in 316 stainless steel, the difference most likely due to dose rate. In both 304 and 316 stainless steels, the presence of a grain boundary precipitate significantly changes the composition of the adjacent grain boundary.

Radiation-induced attenuation in polarization maintaining fibers: low dose rate response, stress, and materials effects

1989 ◽  
Vol 28 (23) ◽  
pp. 5138 ◽  
Author(s):  
E. Joseph Friebele ◽  
Louise A. Brambani ◽  
Michael E. Gingerich ◽  
Steven J. Hickey ◽  
James R. Onstott
Keyword(s):  
Dose Rate ◽  
Low Dose ◽  
Low Dose Rate ◽  
Radiation Induced ◽  
Polarization Maintaining

scholarly journals Incidence of subsequent primary cancers and radiation-induced subsequent primary cancers after low dose-rate brachytherapy monotherapy for prostate cancer in long-term follow-up

2019 ◽  
Author(s):  
Kristiina Vuolukka ◽  
Päivi Auvinen ◽  
Jan-Erik Palmgren ◽  
Sirpa Aaltomaa ◽  
Vesa Kataja
Keyword(s):  
Prostate Cancer ◽  
Risk Factor ◽  
Dose Rate ◽  
Low Dose ◽  
Cancer Development ◽  
Low Dose Rate ◽  
Radiation Induced ◽  
Low Dose Rate Brachytherapy

Abstract Background As aging is the most significant risk factor for cancer development, long-term prostate cancer (PCa) survivors have an evident risk of developing subsequent primary cancers (SPCs). Radiotherapy itself is an additional risk factor for cancer development and the SPCs appearing beyond five years after radiotherapy in the original treatment field can be considered as radiation-induced subsequent primary cancers (RISPCs).Material and Methods During the years 1999-2008, 241 patients with localized PCa who underwent LDR-BT with I125 and were followed-up in Kuopio University Hospital, were included in this study. In this study the incidences and types of SPCs and RISPCs with a very long follow-up time after low dose-rate brachytherapy (LDR-BT) were evaluated.Results During the median follow-up time of 11.4 years, a total of 34 (14.1%) patients developed a metachronous SPC. The crude incidence rate of RISPC was 1.7% (n=4). Half of the SPC cases (50%) were diagnosed during the latter half of the follow-up time as the risk to develop an SPC continued throughout the whole follow-up time with the actuarial 10-year SPC rate of 7.0%. The crude death rates due to metachronous out-of-field SPCs and RISPCs were high, 50% and 50%, respectively.Conclusion The crude rate of SPC was significant, but in line with previous data. The incidence of RISPC was very low supporting the role of LDR-BT as a safe treatment option for patients with localized PCa. However, both the SPCs and the RISPCs after LDR-BT were serious diseases with high mortality rates.

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