scholarly journals A Novel Metallic Artifact Reduction Technique When Using a Computed Tomography-Guided Percutaneous Metallic Antenna to Ablate Malignant Pulmonary Nodules: A Qualitative and Quantitative Assessment

2020 ◽  
Vol 26 ◽  
Author(s):  
Guorong Wang ◽  
Zhiwei Wang ◽  
Zhengyu Jin
Keyword(s):  
Computed Tomography ◽  
Quantitative Assessment ◽  
Pulmonary Nodules ◽  
Reduction Technique ◽  
Artifact Reduction ◽  
Qualitative And Quantitative ◽  
Metallic Artifact

scholarly journals RESULTS OF RADIATION AND HYGIENIC PASSPORTIZATION OF THE CITY OF MOSCOW IN THE PERIOD FROM 2013 TO 2016

2019 ◽  
Vol 98 (3) ◽  
pp. 261-267
Author(s):  
P. I. Melnichenko ◽  
N. I. Prokhorov ◽  
A. M. Bolshakov ◽  
T. M. Khodykina ◽  
Anastasia V. Zakharova
Keyword(s):  
Computed Tomography ◽  
Medical Research ◽  
Quantitative Assessment ◽  
Significant Contribution ◽  
Continuous Increase ◽  
Natural Sources ◽  
Qualitative And Quantitative ◽  
Collective Dose ◽  
Medical Exposure ◽  
The City

Introduction. The article discusses the results of a general analysis of information on the radiation-hygienic passports of Moscow in the period from 2013 to 2016, providing objective and accessible information about the characteristics of all sources of ionizing radiation (man-made, medical, natural) and the resulting radiation doses for the population Moscow. Material and methods. A qualitative and quantitative assessment of doses for the population from natural sources, medical exposure of patients during X-ray examinations was carried out, the objects of Moscow using sources were studied. Results. The number of sources in Moscow has been established to be indicated inaccurately, as a result of which unaccounted sources are identified during control and supervisory measures. The leading role in the structure of collective doses of radiation to the population of Moscow according to the data of 2016 was shown to come from natural sources and medical research as much as 81.5 and 18.3%, respectively. A continuous increase in the dose from computed tomography and its significant contribution to the collective dose from medical exposure of Moscow residents was noted. In 2016, its contribution amounted to 59.9%. Discussion. To determine the qualitative and quantitative assessment of the doses to the population of Moscow from all sources, the radiation hygienic passports of the city of Moscow were studied from 2013 to 2016. Conclusions. On the basis of the study conducted to assess the doses of radiation to the population of Moscow, an underestimation of the effective doses of patients during medical research was established. There is a continuous increase in the dose from computed tomography, its significant contribution to the collective dose from medical exposure of the population of Moscow. In order to update the radiation hygienic passport of Moscow, it is necessary to achieve the presentation of complete information by objects using sources, as well as the relevance of legal acts, taking measures to prevent an unreasonable increase in doses of medical exposure to residents of Moscow while actively introducing highly informative diagnostic methods in medicine.

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