[Evaluation of an exposed-radiation dose on a dual-source cardiac computed tomography examination with a prospective electrocardiogram-gated fast dual spiral scan].
Nihon Hoshasen Gijutsu Gakkai Zasshi
; 68(1): 59-64, 2012.
Article
em Ja
| MEDLINE
| ID: mdl-22277816
ABSTRACT
We evaluated exposed-radiation doses on dual-source cardiac computed tomography (CT) examinations with prospective electrocardiogram (ECG)-gated fast dual spiral scans. After placing dosimeters at locations corresponding to each of the thoracic organs, prospective ECG-gated fast dual spirals and retrospective ECG-gated dual spiral scans were performed to measure the absorbed dose of each organ. In the prospective ECG-gated fast dual spiral scans, the average absorbed doses were 5.03 mGy for the breast, 9.96 mGy for the heart, 6.60 mGy for the lung, 6.48 mGy for the bone marrow, 9.73 mGy for the thymus, and 4.58 mGy for the skin. These values were about 5% of the absorbed doses for the retrospective ECG-gated dual spiral scan. However, the absorbed dose differed greatly at each scan, especially in the external organs such as the breast. For effective and safe use of the prospective ECG-gated fast dual spiral scan, it is necessary to understand these characteristics sufficiently.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Doses de Radiação
/
Radiometria
/
Angiografia Coronária
/
Eletrocardiografia
/
Técnicas de Imagem de Sincronização Cardíaca
/
Tomografia Computadorizada Multidetectores
Tipo de estudo:
Evaluation_studies
Idioma:
Ja
Ano de publicação:
2012
Tipo de documento:
Article