Estimation of the effective doses for radiography of the premature newborns performed on dedicated x-ray units

2020 ◽  
Author(s):  
A. V. Vodovatov ◽  
Yu. N. Potrakhov ◽  
N. N. Potrakhov ◽  
A. V. Alhazishvili ◽  
I. G. Shatskiy
Keyword(s):  
Premature Newborns ◽  
X Ray ◽  
Effective Doses

Comparison of different protocols for radiography of the premature newborns performed on microfocal x-ray units

2021 ◽  
Author(s):  
A. V. Vodovatov ◽  
Yu. N. Potrakhov ◽  
N. N. Potrakhov ◽  
A. V. Alhazishvili ◽  
I. G. Shatskiy
Keyword(s):  
Premature Newborns ◽  
X Ray

CONTEMPORARY COLLECTIVE EFFECTIVE DOSE TO THE POPULATION FROM X-RAY AND NUCLEAR MEDICINE EXAMINATIONS—CHANGES OVER LAST 10 YEARS IN FINLAND

2020 ◽  
Vol 189 (3) ◽  
pp. 318-322
Author(s):  
Ritva Bly ◽  
Hannu Järvinen ◽  
Sampsa Kaijaluoto ◽  
Verneri Ruonala
Keyword(s):  
Nuclear Medicine ◽  
Effective Dose ◽  
Plain Radiography ◽  
Conversion Factors ◽  
X Ray ◽  
Weighting Factors ◽  
Effective Doses

Abstract Contemporary collective effective doses to the population from x-ray and nuclear medicine examinations in Finland in 2018 was estimated. The estimated effective dose per caput from x-ray examinations increased from year 2008 to 2018 respectively from 0.45 mSv to 0.72 mSv and from nuclear medicine examinations from 0.03 mSv to 0.04 mSv. The proportional dose due to CT examinations of the total collective effective dose from all x-ray examinations increased from 58% in 2008 to 70% in 2018 and the dose did not change substantially in total when new conversion factors were applied. The collective effective dose from conventional plain radiography did not change substantially during the last ten years while the new (ICRP 103) tissue weighting factors were taken into use in 2018, however frequencies of examinations in total decreased. The collective effective dose from CT in nuclear medicine tripled between 2009 and 2018.

RESULTS OF CZECH NATIONAL STUDY OF RADIATION EXPOSURE FROM RADIOTHERAPY OF NON-MALIGNANT DISEASES, IN PARTICULAR OF HEEL SPURS

2019 ◽  
Vol 186 (2-3) ◽  
pp. 386-390
Author(s):  
V Dufek ◽  
H Zackova ◽  
L Kotik ◽  
I Horakova
Keyword(s):  
Czech Republic ◽  
Clinical Practice ◽  
Radiation Exposure ◽  
Effective Dose ◽  
National Study ◽  
Malignant Diseases ◽  
Organ Doses ◽  
The Czech Republic ◽  
X Ray ◽  
Effective Doses

Abstract About 26 000 patients are treated per year with radiotherapy for non-malignant diseases in the Czech Republic. Approximately 75% of them are treated on X-ray therapy units and most of these patients undergo radiotherapy of heel spurs. The evaluation of radiation exposure of these patients was based on measured organ doses and on data from clinical practice. Collective effective doses for particular diagnoses were calculated in order to compare doses resulting from different diagnoses treated on X-ray therapy units. The collective effective dose from radiotherapy of heel spurs in the Czech Republic in 2013 was evaluated to 77 manSv. It represents 25.6% of the total collective effective dose for all diagnoses of radiotherapy for non-malignant diseases treated on X-ray therapy units.

Hardware monitoring of effective doses in X-ray examinations

1999 ◽  
Vol 33 (4) ◽  
pp. 198-199
Author(s):  
R. V. Stavitskii ◽  
T. V. Zhanina ◽  
A. I. Murashov ◽  
A. S. Kovalev ◽  
L. A. Lebedev ◽  
...  
Keyword(s):  
X Ray ◽  
Effective Doses ◽  
Hardware Monitoring

scholarly journals Inaktivierungsversuche mit homozygoten Hefestämmen verschiedenen Ploidiegrades

1964 ◽  
Vol 19 (10) ◽  
pp. 929-935 ◽  
Author(s):  
Sigrid Hempel ◽  
Wolfgang Laskowski
Keyword(s):  
Succinic Acid ◽  
Effective Dose ◽  
Colony Formation ◽  
Daughter Cell ◽  
Distinct Difference ◽  
X Rays ◽  
Uv Treatment ◽  
Fermentation Processes ◽  
X Ray ◽  
Effective Doses

A diploid Saccaromyces strain was treated with several doses of X-rays, UV and succinic acid peroxyde (BPO). The inactivation of the ability to form macroscopic colonies as well as the ability to form microcolonies of at least two cells to a few hundred cells has been compared with the inactivation of respiration and fermentation intensity. If the inactivation of macroscopic colony formation is taken as a measure of the effective dose applied, the formation of at least one daughter cell as well as respiration and fermentation intensity is reduced to approximately the same extent after BPO and X-ray treatment. In the latter case, however, much higher effective doses have to be applied and a distinct difference between respiration and fermentation sensitivity is observed. After UV-treatment the formation of at least one daughter cell is exceedingly more sensitive than the fermentation processes. The respiration processes behave most UV resistant. Possible reasons for the observed different relative sensitivities are discussed.

Determination of Radiation Exposure for Patients with Dental X-Ray Studies

2020 ◽  
Vol 65 (1) ◽  
pp. 13-16
Author(s):  
S. Somov
Keyword(s):  
Radiation Exposure ◽  
Effective Dose ◽  
Computer Programs ◽  
Federal State ◽  
Patient Exposure ◽  
X Ray ◽  
Effective Doses ◽  
Statistical Form

Purpose: Improving the quality of radiation assessment of patients of the medical institution of the dental profile using the calculated values of effective doses. Material and methods: Using the RED-2018 and ORTO-2018 programs, the values of effective patient exposure doses for 29 medical organizations of the dental profile were calculated. The obtained values of the effective dose were compared with the values specified in the methodological recommendations MP 0100 / 1659-07-26 of February 16, 2007 “Filling of forms of federal state statistical observation 3-DOZ”. Results: The analysis showed that the doses obtained using the RED-2018 and ORTO-2018 computer programs, respectively, are 21 and 14 times lower than the doses indicated in the methodological recommendations MP 0100 / 1659-07-26. Conclusion: It is shown that the developed computer programs can be applied by a dentist practicing physician who performs an x-ray examination in order to automatically and reliably determine the patient’s dose when performing x-ray-mathematical studies in accordance with the guidelines of MU 2.6.1.2944-11 “Monitoring effective doses of patients during x-ray examinations” also used in the preparation of radiation hygienic passports of organizations and statistical form 3-DOZ. The indication of the actually calculated values of the effective dose of the patient, rather than repeatedly overestimated averages, will reduce the level of radiophobia in society.

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