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

Paul Plasman, Astrid Bakker, René de Lange, Abdulfatah Ahmed, André Garcia, David Tomkinson, Julie Salamin, Sergey A. Buyvidovich, Alexandre Dominguez, Cosmin Campeanu, Tina Sohrabi

    Research output: Chapter in Book/Report/Conference proceedingContribution to conference proceedingAcademicpeer-review

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    Abstract

    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.
    Original languageEnglish
    Title of host publicationOPTIMAX 2014 – radiation dose and image quality optimisation in medical imaging
    Place of PublicationLisbon, Portugal
    Pages21
    Number of pages26
    Publication statusPublished - 2015
    EventOPTIMAX 2014: radiation dose and image quality optimisation in medical imaging - Lisbon , Portugal
    Duration: 1 Aug 201431 Aug 2014

    Seminar

    SeminarOPTIMAX 2014
    CountryPortugal
    CityLisbon
    Period1/08/1431/08/14

    Keywords

    • comparison
    • filtered back projection
    • sinogram-affirmed iterative
    • reconstruction
    • dose reduction
    • paediatric ct
    • computed tomography
    • image quality

    Cite this

    Plasman, P., Bakker, A., de Lange, R., Ahmed, A., Garcia, A., Tomkinson, D., ... Sohrabi, T. (2015). Review article – The impact of Sinogram-Affirmed Iterative Reconstruction on patient dose and image quality compared to filtered back projection: a narrative review. In OPTIMAX 2014 – radiation dose and image quality optimisation in medical imaging (pp. 21). Lisbon, Portugal.
    Plasman, Paul ; Bakker, Astrid ; de Lange, René ; Ahmed, Abdulfatah ; Garcia, André ; Tomkinson, David ; Salamin, Julie ; Buyvidovich, Sergey A. ; Dominguez, Alexandre ; Campeanu, Cosmin ; Sohrabi, Tina. / Review article – The impact of Sinogram-Affirmed Iterative Reconstruction on patient dose and image quality compared to filtered back projection: a narrative review. OPTIMAX 2014 – radiation dose and image quality optimisation in medical imaging. Lisbon, Portugal, 2015. pp. 21
    @inproceedings{cd9c08715b214540ba6699798005751d,
    title = "Review article – The impact of Sinogram-Affirmed Iterative Reconstruction on patient dose and image quality compared to filtered back projection: a narrative review",
    abstract = "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) algorithmshas 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 radiationsensitivity). Further studies should also assess the impact of SAFIRE on diagnostic accuracy.",
    keywords = "comparison, filtered back projection, sinogram-affirmed iterative, reconstruction, dose reduction, paediatric ct, computed tomography, image quality, iteratieve reconstructie, reductie, pediatrie, stralingseffecten, computertomografie, vergelijking, beeldkwaliteit, filtered back projection, sinogram methode",
    author = "Paul Plasman and Astrid Bakker and {de Lange}, Ren{\'e} and Abdulfatah Ahmed and Andr{\'e} Garcia and David Tomkinson and Julie Salamin and Buyvidovich, {Sergey A.} and Alexandre Dominguez and Cosmin Campeanu and Tina Sohrabi",
    note = "References.",
    year = "2015",
    language = "English",
    isbn = "9781907842603",
    pages = "21",
    booktitle = "OPTIMAX 2014 – radiation dose and image quality optimisation in medical imaging",

    }

    Plasman, P, Bakker, A, de Lange, R, Ahmed, A, Garcia, A, Tomkinson, D, Salamin, J, Buyvidovich, SA, Dominguez, A, Campeanu, C & Sohrabi, T 2015, Review article – The impact of Sinogram-Affirmed Iterative Reconstruction on patient dose and image quality compared to filtered back projection: a narrative review. in OPTIMAX 2014 – radiation dose and image quality optimisation in medical imaging. Lisbon, Portugal, pp. 21, OPTIMAX 2014, Lisbon , Portugal, 1/08/14.

    Review article – The impact of Sinogram-Affirmed Iterative Reconstruction on patient dose and image quality compared to filtered back projection: a narrative review. / Plasman, Paul; Bakker, Astrid; de Lange, René; Ahmed, Abdulfatah; Garcia, André; Tomkinson, David; Salamin, Julie; Buyvidovich, Sergey A.; Dominguez, Alexandre; Campeanu, Cosmin; Sohrabi, Tina.

    OPTIMAX 2014 – radiation dose and image quality optimisation in medical imaging. Lisbon, Portugal, 2015. p. 21.

    Research output: Chapter in Book/Report/Conference proceedingContribution to conference proceedingAcademicpeer-review

    TY - GEN

    T1 - Review article – The impact of Sinogram-Affirmed Iterative Reconstruction on patient dose and image quality compared to filtered back projection: a narrative review

    AU - Plasman, Paul

    AU - Bakker, Astrid

    AU - de Lange, René

    AU - Ahmed, Abdulfatah

    AU - Garcia, André

    AU - Tomkinson, David

    AU - Salamin, Julie

    AU - Buyvidovich, Sergey A.

    AU - Dominguez, Alexandre

    AU - Campeanu, Cosmin

    AU - Sohrabi, Tina

    N1 - References.

    PY - 2015

    Y1 - 2015

    N2 - 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) algorithmshas 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 radiationsensitivity). Further studies should also assess the impact of SAFIRE on diagnostic accuracy.

    AB - 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) algorithmshas 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 radiationsensitivity). Further studies should also assess the impact of SAFIRE on diagnostic accuracy.

    KW - comparison

    KW - filtered back projection

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    KW - reconstruction

    KW - dose reduction

    KW - paediatric ct

    KW - computed tomography

    KW - image quality

    KW - iteratieve reconstructie

    KW - reductie

    KW - pediatrie

    KW - stralingseffecten

    KW - computertomografie

    KW - vergelijking

    KW - beeldkwaliteit

    KW - filtered back projection

    KW - sinogram methode

    UR - http://usir.salford.ac.uk/34439/

    M3 - Contribution to conference proceeding

    SN - 9781907842603

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    BT - OPTIMAX 2014 – radiation dose and image quality optimisation in medical imaging

    CY - Lisbon, Portugal

    ER -

    Plasman P, Bakker A, de Lange R, Ahmed A, Garcia A, Tomkinson D et al. Review article – The impact of Sinogram-Affirmed Iterative Reconstruction on patient dose and image quality compared to filtered back projection: a narrative review. In OPTIMAX 2014 – radiation dose and image quality optimisation in medical imaging. Lisbon, Portugal. 2015. p. 21