Comparison of Radiation Dose and Image Quality Between Split-Filter Twin Beam Dual-Energy Images and Single-Energy Images in Single-Source Contrast-Enhanced Chest Computed Tomography.
J Comput Assist Tomogr
; 45(6): 888-893, 2021.
Article
em En
| MEDLINE
| ID: mdl-34469908
ABSTRACT
OBJECTIVE:
To compare image quality and radiation dose of split-filter TwinBeam dual-energy (SF-TBDE) with those of single-energy images (SECT) in the contrast-enhanced chest computed tomography (CT).METHODS:
Two hundred patients who underwent SF-TBDE (n = 100) and SECT (n = 100) contrast-enhanced chest scanning were retrospectively analyzed. The contrast-to-noise ratio (CNR) and figure of merit (FOM)-CNR of 5 structures (lung, aorta, pulmonary artery, thyroid, and erector spinae) were calculated and subjectively evaluated by 2 independent radiologists. Radiation dose was compared using volume CT dose index and size-specific dose estimate.RESULTS:
The CNR and FOM-CNR of lung and erector spinae in SF-TBDE were higher than those of SECT (P < 0.001). The differences in the subjective image quality between the 2 groups were not significant (P = 0.244). Volume CT dose index and size-specific dose estimate of SF-TBDE were lower than those of SECT (6.60 ± 1.56 vs 7.81 ± 3.02 mGy, P = 0.001; 9.25 ± 1.60 vs. 10.55 ± 3.54; P = 0.001).CONCLUSIONS:
The SF-TBDE CT can provide similar image quality at a lower radiation dose compared with SECT.
Texto completo:
1
Coleções:
01-internacional
Temas:
Agentes_cancerigenos
Base de dados:
MEDLINE
Assunto principal:
Doses de Radiação
/
Doenças Torácicas
/
Radiografia Torácica
/
Intensificação de Imagem Radiográfica
/
Tomografia Computadorizada por Raios X
/
Imagem Radiográfica a Partir de Emissão de Duplo Fóton
/
Meios de Contraste
Tipo de estudo:
Observational_studies
Limite:
Adult
/
Aged
/
Aged80
/
Female
/
Humans
/
Male
/
Middle aged
País/Região como assunto:
Asia
Idioma:
En
Revista:
J Comput Assist Tomogr
Ano de publicação:
2021
Tipo de documento:
Article