Radiation dose and diagnostic image quality associated with iterative reconstruction in coronary CT angiography: A systematic review.
J Med Imaging Radiat Oncol
; 60(4): 459-68, 2016 Aug.
Article
en En
| MEDLINE
| ID: mdl-27241506
ABSTRACT
The aim of this systematic review is to evaluate the radiation dose reduction achieved using iterative reconstruction (IR) compared to filtered back projection (FBP) in coronary CT angiography (CCTA) and assess the impact on diagnostic image quality. A systematic search of seven electronic databases was performed to identify all studies using a developed keywords strategy. A total of 14 studies met the criteria and were included in a review analysis. The results showed that there was a significant reduction in radiation dose when using IR compared to FBP (P < 0.05). The mean and standard deviation (SD) difference of CTDIvol and dose-length-product (DLP) were 14.70 ± 6.87 mGy and 186 ± 120 mGy.cm respectively. The mean ± SD difference of effective dose (ED ) was 2.9 ± 1.7 mSv with the range from 1.0 to 5.0 mSv. The assessment of diagnostic image quality showed no significant difference (P > 0.05). The mean ± SD difference of image noise, signal-noise ratio (SNR) and contrast-noise ratio (CNR) were 1.05 ± 1.29 HU, 0.88 ± 0.56 and 0.63 ± 1.83 respectively. The mean ± SD percentages of overall image quality scores were 71.79 ± 12.29% (FBP) and 67.31 ± 22.96% (IR). The mean ± SD percentages of coronary segment analysis were 95.43 ± 2.57% (FBP) and 97.19 ± 2.62% (IR). In conclusion, this review analysis shows that CCTA with the use of IR leads to a significant reduction in radiation dose as compared to the use of FBP. Diagnostic image quality of IR at reduced dose (30-41%) is comparable to FBP at standard dose in the diagnosis of CAD.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Dosis de Radiación
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Procesamiento de Imagen Asistido por Computador
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Interpretación de Imagen Radiográfica Asistida por Computador
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Exposición Profesional
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Angiografía Coronaria
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Angiografía por Tomografía Computarizada
Tipo de estudio:
Diagnostic_studies
/
Prognostic_studies
/
Risk_factors_studies
/
Systematic_reviews
Límite:
Humans
Idioma:
En
Revista:
J Med Imaging Radiat Oncol
Asunto de la revista:
DIAGNOSTICO POR IMAGEM
/
NEOPLASIAS
/
RADIOLOGIA
Año:
2016
Tipo del documento:
Article
País de afiliación:
Australia