Personnel exposure to radiation at some angiographic procedures.

Gustafsson, Monica; Lunderquist, Anders

doi:10.1148/radiology.140.3.7280251

Cited by 26 publications

(5 citation statements)

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“…For comparison HUDA & SANDISON (9) estimated the effective dose equivalent at a computed tomography of the chest to 4.8 mSv and of the abdomen to 2.6 mSv.The absorbed dose to the uterus is of special interest if the patient is pregnant. The estimated mean absorbed dose to the uterus of the 3 women and to the corresponding anatomic site of the 8 men was 4 (range 0 [4][5][6][7][8][9][10][11][12]. mGy.…”

mentioning

confidence: 99%

Radiation Dose to Patients and Personnel during Fluoroscopy at Percutaneous Renal Stone Extraction

Geterud¹,

Larsson²,

Mattsson³

1989

Acta Radiol

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The radiation dose to patients and personnel was estimated during II percutaneous renal stone extractions. For the patients the energy imparted, the mean absorbed dose to various organs, and the effective dose equivalent were estimated. For different personnel categories some organ doses and the effective dose equivalent were also estimated. Large differences in the radiation dose between patients were observed. The mean effective dose equivalent to the patient was 4.2 (range 0.6--8.3) mSv, and the energy imparted 285 (range 50-500) mJ. These figures are comparable to those reported for routine colon examination and urography. For the personnel there were also large differences between individuals and categories. The highest radiation dose was received by the radiologist. It was estimated that a radiologist who performs 150 percutaneous renal stone extractions per year will receive a yearly contribution to his/her effective dose equivalent of 2.4 mSv. Even when the contribution from other diagnostic and interventional radiologic procedures is added, the total effective dose equivalent hardly exceeds 5 mSv or 1110 of the present dose limit for persons engaged in radiologic work. For the hands of the radiologist there is a risk of doses closer to the present limit for single organs or tissues of 500 mSv/year.

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mentioning

confidence: 99%

Radiation Dose to Patients and Personnel during Fluoroscopy at Percutaneous Renal Stone Extraction

Geterud¹,

Larsson²,

Mattsson³

1989

Acta Radiol

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“…On the other hand, the infusion according to our technique generally lasts only 3 to 5 min and the effective dose equivalent has roughly been estimated to 0.01 mSv per examination provided that a 0.25 mm lead apron is worn. This value should be compared with the maximum recommended annual permissible effective dose equivalent for occupationally exposed persons, which is 5000 times higher, i.e, 50 mSv (8). In addition, the personnel performing the infusions may have a reassuring effect on those patients who experience any discomfort during the examination.…”

Section: Discussionmentioning

confidence: 99%

“…d) Dissecting aneurysmof the descending aorta with contrast filling of both the false and true lumen (150 HU) separated by the intimalflap (..-+). effective dose equivalent, was calculated using the weighting factors recommended by the International Commission on Radiological Protection (ICRP) (8). The effective dose equivalent was then standardized for 15 scans, which is an approximate mean value of the number of scans during each of these examinations.…”

Section: Methodsmentioning

confidence: 99%

Vascular Enhancement during Incremental Body Computed Tomography

Nyman¹,

Dinnetz²

1986

Acta Radiologica. Diagnosis

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An initial manual bolus injection of contrast medium to an amount of 15 g iodine immediately followed by a manual infusion of 25 to 35 g iodine during 3 to 5 minutes will provide proper enhancement of vascular structures (110-150 HU) at incremental body computed tomography during that time and for some minutes after the end of the infusion. This technique applied in more than 1,000 examinations proved it to be reliable, simple and fast. A computed tomograph allowing 3 scans per minute permits an adequate and even level of vascular enhancement of the entire neck, mediastinum, abdomen or pelvis when continuous or more sparse slices of about 10 mm thickness are used. When the images are reconstructed without delay and presented on a monitor in the scanning suite, it is possible to individually optimize the rate of infusion and thereby also minimize the amount of contrast medium. A prerequisite for a proper vascular enhancement is a high rate of infusion initially.

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“…As blindagens são utilizadas para deter a propagação das radiações, evitando, assim, exposições desnecessárias de pessoas envolvidas com equipamentos que emitem radiação ionizante. Sua eficiência é determinada pela capacidade de penetração dos raios X, assim como pela natureza e espessura do material de blindagem 2,10,21 . Os profissionais, na sala de exame, devem posicionar-se de tal forma que nenhuma parte do corpo, incluindo extremidades, seja atingida pelo feixe primário sem que esteja protegida por 0,5 mm equivalentes de chumbo e também se proteger da radiação espalhada por vestimenta ou barreiras protetoras com atenuação não inferior a 0,25 mm equivalentes de chumbo 15,17 .…”

Section: Sistema De Radioproteçãounclassified

“…Em virtude dos benefícios gerados pelo uso dos equipamentos de fluoroscopia nos diversos tipos de procedimentos relacionados às doenças vasculares, cuja principal característica é permitir a visualização em tempo real, guiando as manobras diagnósticas e/ou terapêuticas que estão sendo realizadas, seu uso freqüente é capaz de produzir efeitos nocivos à saúde dos profissionais envolvidos, já que os mesmos são considerados fontes artificiais de radiação ionizante 2,5 . Faz-se necessário, portanto, que o profissional deva se expor o menor tempo possível à radiação emitida pelo aparelho [4][5][6][7][8][9][10][11][12] .…”

Section: Introductionunclassified

Correlações técnicas e ocupacionais da radiologia intervencionista

Souza

Soares

2008

J. vasc. bras.

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A radiologia diagnóstica é a área da física médica relacionada ao uso de raios X para a obtenção de informações anatômicas e funcionais do corpo humano. As técnicas associadas a essa área utilizam tubos de raios X como fontes de radiação, filmes para o registro das informações, sistemas de monitoração por televisão e equipamentos que digitalizam as imagens utilizando computadores. Os equipamentos de fluoroscopia são considerados fontes artificiais de radiação ionizante e são utilizados para a realização de exames e procedimentos nas doenças vasculares. O objetivo deste estudo foi analisar criticamente os métodos de proteção em relação à radiação emitida pela fluoroscopia utilizados pelos profissionais que lidam com a radiologia intervencionista no ambiente hospitalar. Foi realizada uma análise crítica das atitudes de proteção tomadas pelos profissionais engajados nos procedimentos da radiologia intervencionista a partir da revisão bibliográfica realizada em livros-textos e em revistas periódicas indexadas no MEDLINE, nas línguas portuguesa, inglesa, francesa e espanhola, no período de 1966 a 2005, conforme os princípios e as normas de segurança de proteção radiológica norteadas pela Portaria 453/98 do Ministério da Saúde e a norma da Comissão Nacional de Energia Nuclear NN-3.01 do Ministério da Ciência e Tecnologia.

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Personnel exposure to radiation at some angiographic procedures.

Cited by 26 publications

References 0 publications

Radiation Dose to Patients and Personnel during Fluoroscopy at Percutaneous Renal Stone Extraction

Radiation Dose to Patients and Personnel during Fluoroscopy at Percutaneous Renal Stone Extraction

Vascular Enhancement during Incremental Body Computed Tomography

Correlações técnicas e ocupacionais da radiologia intervencionista

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