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The impact of Sinogram-Affirmed Iterative Reconstruction on patient dose and image quality compared to filtered back projection: a narrative review

2015Book part Open access
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dc.contributor.authorAhmed, Abdulfatah
dc.contributor.authorGarcia, André
dc.contributor.authorBakker, Astrid
dc.contributor.authorTomkinson, David
dc.contributor.authorSalamin, Julie
dc.contributor.authorde Lange, René
dc.contributor.authorBuyvidovich, Sergey A.
dc.contributor.authorSohrabi, Tina
dc.contributor.authorDominguez, Alexandre
dc.contributor.authorCampeanu, Cosmin
dc.contributor.authorPlasman, Paul
dc.date.accessioned2015-08-27T14:05:42Z
dc.date.available2015-08-27T14:05:42Z
dc.date.issued2015
dc.description.abstractObjective: 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.por
dc.identifier.citationAhmed 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.por
dc.identifier.isbn9781907842603
dc.identifier.urihttp://hdl.handle.net/10400.21/5023
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherOpen Source, University of Salfordpor
dc.relation.publisherversionhttp://usir.salford.ac.uk/34439/por
dc.subjectSinogram-affirmed iterative reconstructionpor
dc.subjectFiltered back projectionpor
dc.subjectDose reductionpor
dc.subjectPaediatric patientspor
dc.subjectComputed tomographypor
dc.subjectImage qualitypor
dc.titleThe impact of Sinogram-Affirmed Iterative Reconstruction on patient dose and image quality compared to filtered back projection: a narrative reviewpor
dc.typebook part
dspace.entity.typePublication
oaire.citation.endPage26por
oaire.citation.startPage21por
rcaap.rightsopenAccesspor
rcaap.typebookPartpor

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