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Innovations in CT Dose Reduction Strategy: Application of the Adaptive Statistical Iterative Reconstruction Algorithm

Innovations in CT Dose Reduction Strategy: Application of the Adaptive Statistical Iterative Reconstruction Algorithm,10.2214/AJR.09.2953,American Jou

Innovations in CT Dose Reduction Strategy: Application of the Adaptive Statistical Iterative Reconstruction Algorithm   (Citations: 20)
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Journal: American Journal of Roentgenology - AMER J ROENTGENOL , vol. 194, no. 1, pp. 191-199, 2010
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    • ...New techniques for CT such as iterative reconstruction [18, 19 ]a nd an adaptive noise reduction filter [20] may reduce image noise, and a higher pitch and use of an auto-dose modulation system can be used with low-tube-voltage settings...

    Daisuke Utsunomiyaet al. Comparison of standard- and low-tube voltage MDCT angiography in patie...

    • ...IIR is being considered for application in computed tomography (CT), see for example [1], because it is possible to account for noise in the data model and accordingly allow for high quality images with a reduced exposure [2]...

    Emil Y. Sidkyet al. High resolution image reconstruction with constrained, total-variation...

    • ...The ASIR model minimizes image noise by comparing individual pixels against a generated noise map, with subsequent optimization of image quality through multiple reconstructions [10]...
    • ...Through a partial iterative reconstruction process, this subsequent value is then compared against the value that the noise model predicts, and over successive cycling an ideal pixel value is created [10]...

    Gregory A. Voronaet al. Reducing abdominal CT radiation dose with the adaptive statistical ite...

    • ...General Electric (GE) has launched the adaptive statistical iterative reconstruction (ASIR) method that reduces image noise and produces better overall image quality compared with routine-dose contrast-enhanced methods [6]...
    • ...Recent studies have shown that this new reconstruction method is a promising technique that provides adequate diagnostic image quality at lower tube currents, leading to a reduction in patient dose [6]...
    • ...Image oversmoothing with 100% ASIR has also been reported by Silva et al. although its diagnostic significance remains uncertain [6]...
    • ...ASIR is a reconstruction technique that is able to reduce image noise and improve image quality with respect to the traditional FBP method [6]...
    • ...However, it has also been shown that the intrinsic characteristics of ASIR produce a noise-free reconstructed image with an unusual homogeneous appearance [6, 7]. To restore the more classical appearance of CT images, a linear blend of the conventional FBP method with the ASIR has been implemented on GE CT consoles...
    • ...Our results confirm the fact that, as already mentioned by several authors [6, 7, 9], 100% ASIR yields a significantly “lower” structure visibility than standard FBP...

    Frédéric A. Miévilleet al. Paediatric cardiac CT examinations: impact of the iterative reconstruc...

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