Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/5023
Título: The impact of Sinogram-Affirmed Iterative Reconstruction on patient dose and image quality compared to filtered back projection: a narrative review
Autor: Ahmed, Abdulfatah
Garcia, André
Bakker, Astrid
Tomkinson, David
Salamin, Julie
de Lange, René
Buyvidovich, Sergey A.
Sohrabi, Tina
Dominguez, Alexandre
Campeanu, Cosmin
Plasman, Paul
Palavras-chave: Sinogram-affirmed iterative reconstruction
Filtered back projection
Dose reduction
Paediatric patients
Computed tomography
Image quality
Data: 2015
Editora: Open Source, University of Salford
Citação: Ahmed A, Garcia A, Bakker A, Tomkinson D, Salamin J, Lange R, et al. The impact of Sinogram-Affirmed Iterative Reconstruction on patient dose and image quality compared to filtered back projection: a narrative review. In Hogg P, Lança L, editors. OPTIMAX 2014 – Radiation dose and image quality optimisation in medical imaging. Salford, UK: Open Source, University of Salford; 2015. p. 21-6.
Resumo: Objective: Summarize all relevant findings in published literature regarding the potential dose reduction related to image quality using Sinogram-Affirmed Iterative Reconstruction (SAFIRE) compared to Filtered Back Projection (FBP). Background: Computed Tomography (CT) is one of the most used radiographic modalities in clinical practice providing high spatial and contrast resolution. However it also delivers a relatively high radiation dose to the patient. Reconstructing raw-data using Iterative Reconstruction (IR) algorithms has the potential to iteratively reduce image noise while maintaining or improving image quality of low dose standard FBP reconstructions. Nevertheless, long reconstruction times made IR unpractical for clinical use until recently. Siemens Medical developed a new IR algorithm called SAFIRE, which uses up to 5 different strength levels, and poses an alternative to the conventional IR with a significant reconstruction time reduction. Methods: MEDLINE, ScienceDirect and CINAHL databases were used for gathering literature. Eleven articles were included in this review (from 2012 to July 2014). Discussion: This narrative review summarizes the results of eleven articles (using studies on both patients and phantoms) and describes SAFIRE strengths for noise reduction in low dose acquisitions while providing acceptable image quality. Conclusion: Even though the results differ slightly, the literature gathered for this review suggests that the dose in current CT protocols can be reduced at least 50% while maintaining or improving image quality. There is however a lack of literature concerning paediatric population (with increased radiation sensitivity). Further studies should also assess the impact of SAFIRE on diagnostic accuracy.
Peer review: yes
URI: http://hdl.handle.net/10400.21/5023
ISBN: 9781907842603
Versão do Editor: http://usir.salford.ac.uk/34439/
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