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Vaikų apšvita krūtinės ląstos rentgenografijoje po optimizavimo

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dc.contributor.author Juronytė, Eglė
dc.date.accessioned 2019-06-11T07:06:33Z
dc.date.available 2019-06-11T07:06:33Z
dc.date.issued 2019-06-06
dc.identifier.uri http://dspace.kaunokolegija.lt//handle/123456789/1533
dc.description Relevance. Diagnostic examinations using radiation are inherent in modern medicine. Majority of radiological examinations performed nowadays are X-rays. The prevalent examination in pediatric radiology is chest X-ray. Childern are up to 10 times more sensitive to the stochastic effects caused by ionizing radiation, nevertheless their probability of fatal cancer induction is higher due to a longer life expectancy. This requires special attention to radiation protection of pediatric patients, thus apply the optimization principle in pediatric examinations. The important aspect of this principle is to produce an image appropriate for interpretation rather than pleasing to the eye. Purpose. To evaluate the dose to pediatric patients undergoing chest radiography following radiological optimization (Automatic exposure control (AEC) device calibration). Objectives: 1. To characterize the importance and aim of optimization as well as automatic exposure control in radiology. 2. To evaluate the doses received by pediatric patients during chest radiography. 3. To compare the doses to pediatric patients undergoing chest X-ray after optimization with doses received by pediatric patients before radiological optimization. 4. To compare doses received by pediatric patients during chest radiography with Lithuanian diagnostic reference levels as well as European diagnostic reference levels for paediatric imaging. Methods. Survey was conducted in the Hospital of Lithuanian University of Health Sciences Kaunas Clinics X-ray cabinet of Clinic of Children's Disease from February 18th, 2019 to April 12th, 2019. A total of 87 children between 0 and 18 years old who underwent chest X-ray were included in this study. In order to calculate the exposure doses the patients received, exposure parameters were logged during each X-ray. Results and conclusions. Dose area product (DAP) values ranged from 2,7 µGy•m2 to 10,8 µGy•m2. The values decreased in all age groups, yet two of the groups exceed national diagnostic reference levels (DRLs) by one tenth. Patient entrance surface doses (ESD) ranged from 0,06 mGy to 0,12 mGy. Groups of 10 and 15 years of age exceed national DRLs by one third. DAP values decreased in all weight groups, yet some exceed European DRLs by one third. ESD values reduced by at least one tenth in most weight groups, thus are equal to European diagnostic reference levels. en_US
dc.description.abstract Baigiamajame darbe, pasitelkus mokslinės literatūros analizę, aprašyta optimizavimo bei automatinės ekspozicijos kontrolės reikšmė rentgenografijoje. Darbo tikslas: įvertinti vaikų apšvitą krūtinės ląstos rentgenografijų metu po atlikto optimizavimo. Tyrimo metu registruoti ir apskaičiuoti vaikų apšvitos rodmenys. Šie palyginti su 2017 m. atlikto analogiško tyrimo rezultatais, palygintos vaikų apšvitos dozės prieš ir po sistemos optimizavimo. Atsižvelgus į tyrimo rezultatus, pateiktos rekomendacijos radiologijos technologams en_US
dc.language.iso other en_US
dc.subject AEK, apšvita, pediatrinė radiologija, optimizavimas en_US
dc.title Vaikų apšvita krūtinės ląstos rentgenografijoje po optimizavimo en_US
dc.title.alternative Children’s Exposure in the Chest X-ray after Optimization en_US
dc.type Other en_US

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