Reduced radiation dose with model based iterative reconstruction coronary artery calcium scoring.
Eur J Radiol
; 111: 1-5, 2019 Feb.
Article
en En
| MEDLINE
| ID: mdl-30691659
ABSTRACT
Assessing coronary artery calcium (CAC) is a valuable tool for individualizing cardiac risk assessment. In CAC scanning, this technical report assesses the use of a true model-based iterative reconstruction algorithm using forward projected model-based iterative reconstruction ("FIRST") and assess whether FIRST allows for reduced radiation dose CAC scanning on 320-detector row computed tomography (320-CT). Here, 100 consecutive patients prospectively underwent reduced and standard dose scans. For the patients (59 ± 9 years, 61% male) stratified by Agatston categories 0, 1-10, 11-100, 101-400,> 400, agreement between reduced dose with FIRST versus standard dose with FBP was excellent at 81% (95% CI 73-88%) with kappa 0.74 (95% CI 0.64-0.85). Median radiation exposure was 75% lower for reduced (0.35 mSv) versus standard dose (1.37 mSv) scans. In conclusion, agreement was excellent for reduced dose with FIRST and standard dose with FBP in 320-detector row CT CAC imaging in well-established categories of cardiovascular risk. These methods make it possible to reduce radiation exposure by 75%.
Palabras clave
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Enfermedad de la Arteria Coronaria
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Tomografía Computarizada por Rayos X
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Calcificación Vascular
Tipo de estudio:
Etiology_studies
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Observational_studies
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Prognostic_studies
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Risk_factors_studies
Límite:
Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
Eur J Radiol
Año:
2019
Tipo del documento:
Article
País de afiliación:
Estados Unidos