Comparison of Chest Pain Protocols for Electrocardiography-Gated Dual-Source Cardiothoracic CT in Children and Adults: The Effect of Tube Current Saturation on Radiation Dose Reduction
Korean Journal of Radiology
;
: 23-31, 2018.
Artigo
em Inglês
| WPRIM
| ID: wpr-741389
ABSTRACT
OBJECTIVE:
To compare radiation doses between conventional and chest pain protocols using dual-source retrospectively electrocardiography (ECG)-gated cardiothoracic computed tomography (CT) in children and adults and assess the effect of tube current saturation on radiation dose reduction. MATERIALS ANDMETHODS:
This study included 104 patients (16.6 ± 7.7 years, range 5–48 years) that were divided into two groups those with and those without tube current saturation. The estimated radiation doses of retrospectively ECG-gated spiral cardiothoracic CT were compared between conventional, uniphasic, and biphasic chest pain protocols acquired with the same imaging parameters in the same patients by using paired t tests. Dose reduction percentages, patient ages, volume CT dose index values, and tube current time products per rotation were compared between the two groups by using unpaired t tests. A p value 0.05); the groups with tube current saturation showed significantly higher volume CT dose index values (p < 0.01) and tube current time product per rotation (p < 0.001) than the groups without tube current saturation in all protocols.CONCLUSION:
The radiation dose of dual-source retrospectively ECG-gated spiral cardiothoracic CT can be reduced by approximately 15% by using the biphasic chest pain protocol instead of the conventional protocol in children and adults if radiation dose parameters are further optimized to avoid tube current saturation.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Tórax
/
Dor no Peito
/
Estudos Retrospectivos
/
Eletrocardiografia
/
Tomografia Computadorizada de Feixe Cônico
/
Métodos
Tipo de estudo:
Estudo observacional
Limite:
Adulto
/
Criança
/
Humanos
Idioma:
Inglês
Revista:
Korean Journal of Radiology
Ano de publicação:
2018
Tipo de documento:
Artigo
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