Influência do procedimento radiográfico na dose de entrada na pele de pacientes em raios-X pediátricos

Oliveira, Marcus Aurélio Taborda de; Khoury, Helen J.

doi:10.1590/s0100-39842003000200009

Cited by 27 publications

(13 citation statements)

References 4 publications

(1 reference statement)

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“…As a result, the technical parameters used in the examinations have no regularity, as shown in Table 3. Two smaller-scale surveys of doses to pediatric patients (less than 15 years old) undergoing chest examinations (AP and PA projections) carried out in Brazil-in Pernambuco (18) and in Rio de Janeiro (19) states-obtained mean tube potential values between 65 and 75 kV and exposure settings between 2.5 and 15 mAs, both intervals much narrower than what we found. A dose survey of pediatric patients in countries of the European Union (7) showed that approximately 80% of chest examinations (AP and PA projections) in children with a mean age of 5 years used tube potentials more than 60 kV, whereas in this study the practice corresponds to 55% of the examinations.…”

Section: Selection and Analysis Of Datacontrasting

confidence: 75%

“…Dose surveys conducted in two Brazilian cities (Curitiba (20) and São Paulo (21)) reported mean ESD values to adult patients undergoing chest examinations similar to the ones obtained here: 0.33 and 0.22 mGy (PA projection) and 1.01 and 0.98 mGy (LAT projection). Mean ESD values to pediatric patients were reported between 0.22 and 0.28 mGy, depending on the age, in chest examinations (AP and PA projections) carried out in the city of Recife (18). Another study of doses to pediatric patients conducted in Rio de Janeiro (19) reported Freitas mean ESD values between 0.03 and 0.12 mGy for chest examinations (AP and PA projections), substantially lower than those observed in this study, probably because in that study only pediatric hospitals were considered.…”

Section: Diagnostic Reference Levelsmentioning

confidence: 99%

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Diagnostic reference levels for the most frequent radiological examinations carried out in Brazil

Freitas

Yoshimura

2009

Rev Panam Salud Publica

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Objectives. A large-scale survey of doses to patients undergoing the most frequent radiological examinations was carried out in health services in São Paulo Conclusions. Despite the reduced number of ESD values and rooms for the pediatric patient group, it is recommended that practices in chest examinations be revised and that specific national reference doses and image quality be established after a broader survey is carried out.Thermoluminescent dosimetry, radiology, Brazil. ABSTRACTThe radiation protection system for patients subjected to medical exposures in diagnostic radiology is governed by principles of justification and optimization, including the consideration of diagnostic reference levels (DRLs). Therefore, a diagnostic radiological procedure is justified if the benefits to the individual patient from the medical diagnostic obtained with the radiological image balance the individual detriment the exposure may cause. Once a medical exposure has been justified, the principle of optimization is applied-that is, the radiological examination must be carried out with equipment and exposure parameters that ensure doses to patients as low as reasonably practicable, consistent with the intended diagnostic purpose (1). For diagnostic medical exposures, this value is interpreted as being the lowest dose possible, which is consistent with the required image quality that is necessary for obtaining the desired diagnostic information.From these principles, and considering that all medical exposures bring a potential health benefit to patients, dose

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Section: Selection and Analysis Of Datacontrasting

confidence: 75%

Section: Diagnostic Reference Levelsmentioning

confidence: 99%

Diagnostic reference levels for the most frequent radiological examinations carried out in Brazil

Freitas

Yoshimura

2009

Rev Panam Salud Publica

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“…Entrance skin dose measurement is an important tool in quality control programs: the more optimized the technical procedure, the lower the dose levels [3][4][5]. The entrance skin dose (ESD) can be influenced by several factors, such as exposure parameters (voltage, exposure time and focus-film distance), field size and x-ray beam limitation [6]. To establish entrance skin dose levels, both direct (ionization chambers or solid state dosimeters) or indirect measurements can be utilized.…”

Section: Introductionmentioning

confidence: 99%

Measurements of Entrance Skin Dose in Egyptian Pediatric During Diagnostic X-Rays using Thermo Luminescence Dosimeter (TLD -100)

Gazy¹

2018

Arab Journal of Nuclear Sciences and Applications

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Radiation protection in pediatric radiology deserves special attention due to the fact that children are more sensitive to radiation than the adults. This study is concerned with the measurements of pediatric entrance surface dose (ESD) using thermo-luminance dosimeter (TLD, LIF100) for patients ranging from age intervals: 0.1-5 years, 5-10 years and 10-16 years, respectively. A central public pediatric hospital and 120 Egyptian patients were included in this investigation. By careful selection of the patients, three types of simple radiography were selected, as follows: (50 to the chest, 35 to the abdomen and 35 to the skull). Pediatric chest examinations are the most frequent radiological examinations. Comparisons were performed between these doses and the diagnostic reference levels (DRLs). The results showed that mean patient skin doses measured with TLD for the patients ranging from 10-16 years old were 0.20 mGy 14%, 1.10 mGy 23% and 1.00 mGy 40% for chest, abdomen and skull examination, respectively. The mean ESD values were found to be within the range of ESD reference values, except those for the chest examination.

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“…Da revisão dos relatórios da monitoração individual dos serviços de ima-As exposições profissionais em hemodinâmica estão associadas à ocorrência de efeitos determinísticos, sendo a tireóide e o cristalino exemplos de órgãos sob risco de surgimento destes efeitos, embora sejam raros os relatos bem documentados de casos (3) . Entretanto, para fins de proteção radiológica, os efeitos estocásticos são assumidos como proporcionais à dose efetiva, que se constitui no indicador a ser acompanhado, tendo em vista a magnitude das doses decorrentes da realização de procedimentos de hemodinâmica (4) . O objetivo deste trabalho é estimar a dose efetiva nos profissionais envolvidos na realização de procedimentos de hemodinâmica (ambiente de trabalho do médico e enfermagem), verificar a redução da dose obtida com a interposição de barreira de proteção e se a dose aferida corresponde aos dados referidos na literatura, e estabelecer um protocolo de comportamento do profissional na sala de exame.…”

Section: Introductionunclassified

Avaliação da exposição ocupacional em procedimentos de hemodinâmica

Scremin¹,

Schelin²,

Tilly

2006

Radiol Bras

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OBJETIVO: Avaliar a dose efetiva recebida pelos trabalhadores envolvidos na realização de procedimentos de hemodinâmica, de forma a estabelecer parâmetros comparativos entre os dados obtidos com uma câmara de ionização e pelos dosímetros usados para monitoração individual. MATERIAIS E MÉTODOS: A avaliação foi desenvolvida em um serviço de hemodinâmica, sendo que os testes constaram da medida do taxa de kerma no ar no ambiente real de trabalho, na posição ocupada por médicos e enfermeiros, com e sem a utilização de barreira plumbífera de proteção. Foi levado em consideração o número de exames realizados no serviço e foram selecionados as projeções e parâmetros radiográficos mais utilizados. Para a estimativa da dose efetiva foram utilizados fatores de conversão encontrados na literatura. RESULTADOS: Os valores encontrados em dose efetiva e de dosimetria são consistentes. Observou-se, ainda, que o uso da barreira protetora plumbífera reduz em até 97% a dose recebida pelo profissional, devendo esta ser utilizada na rotina de exames. CONCLUSÃO: Os valores apresentados são representativos, não podendo ser assumidos como reprodução das condições de monitoração individual, mas são válidos para comparações e orientação na otimização das doses.

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Influência do procedimento radiográfico na dose de entrada na pele de pacientes em raios-X pediátricos

Cited by 27 publications

References 4 publications

Diagnostic reference levels for the most frequent radiological examinations carried out in Brazil

Diagnostic reference levels for the most frequent radiological examinations carried out in Brazil

Measurements of Entrance Skin Dose in Egyptian Pediatric During Diagnostic X-Rays using Thermo Luminescence Dosimeter (TLD -100)

Avaliação da exposição ocupacional em procedimentos de hemodinâmica

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