Levantamento radiométrico em estudos hemodinâmicos com equipamento Siemens Angioskop D / Radiometric Survey During Hemodynamic Studies with "Siemens Angloskop D" Equipment
Arq. bras. cardiol
; Arq. bras. cardiol;61(4): 233-236, out. 1993. ilus, tab, graf
Article
em Pt
| LILACS
| ID: lil-148872
Biblioteca responsável:
BR1.1
RESUMO
PURPOSE--To provide data for professional specialized in these subjects, contributing to minimize their exposure radiation dosage. METHODS--We made a radiometric survey using a ionization chamber to check the exposure rate in several places in the examination's room to different operational conditions of X-ray equipment. RESULTS--The operational conditions on which we have gotten the highest scatter X-ray rate were image intensifier with 17cm of diameter for left anterior oblique projection (45 degrees) and image intensifier with 27cm of diameter for perpendicular beam to the patient (0 degrees). During fluoroscopy and cinefilm mode we have got average reduction of 40 per cent for scatter X-ray using the image intensifier of 27 cm of diameter. During the cinefilm the dose rates were 23 times bigger than the dose rate in fluoroscopy mode. CONCLUSION--An analysis of results show that the choice of X-ray entrance angle as well as the diameter of image's intensifier during the cinefilm and fluoroscopy mode change significantly the occupational exposure dosages. Considering that in this kind of procedure, physicians and assistants spent long time close to the patient, they should have special concern to observe the technical condition more appropriate as well as to make use of all protection devices to minimize the personnel dosage
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
LILACS
Assunto principal:
Doses de Radiação
/
Radiometria
Tipo de estudo:
Diagnostic_studies
Idioma:
Pt
Revista:
Arq. bras. cardiol
Assunto da revista:
CARDIOLOGIA
Ano de publicação:
1993
Tipo de documento:
Article
País de publicação:
Brasil