CT dose reduction using Automatic Exposure Control and iterative reconstruction: A chest paediatric phantoms study
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- 作者：Joë ; l Greffier ; joel.greffier@chu-nimes.fr" class="auth_mail" title="E-mail the corresponding author ; Fabricio Pereira fabricio.pereira@chu-nimes.fr" class="auth_mail" title="E-mail the corresponding author ; Francesco Macri francesco.macri@chu-nimes.fr" class="auth_mail" title="E-mail the corresponding author ; Jean-Paul Beregi jean.paul.beregi@chu-nimes.fr" class="auth_mail" title="E-mail the corresponding author ; Ahmed Larbi ahmed.larbi@chu-nimes.fr" class="auth_mail" title="E-mail the corresponding author
- 关键词：AEC ; Automatic Exposure Control ; CNR ; contrast-to-noise ratio ; CTDIvol ; volume CT dose index ; DRLs ; Diagnostic Reference Levels ; FBP ; Filtered Back Projection ; IR ; iterative reconstruction ; mAseff ; effective or modulated mAs ; mAsfix ; fixed mAs ; mAsmod ; modulated mAs ; mAsref ; image quality reference mAs ; MDCT ; Multi Detector Computed Tomography ; NPS ; Noise Power Spectrum ; ROI ; Region of Interest ; SAFIRE ; Sinogram Affirmed Iterative Reconstruction ; SNR ; signal-to-noise ratio ; SSDE ; size-specific d
- 刊名：Physica Medica
- 出版年：2016
- 出版时间：April 2016
- 年：2016
- 卷：32
- 期：4
- 页码：582-589
- 全文大小：1054 K
文摘
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Automatic Exposure Control (AEC) reduces dose delivered in chest paediatric MDCT.
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Application of AEC results in a deterioration of image quality indices.
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Iterative reconstruction (IR) compensates for the deterioration of image quality indices.
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IR changes the amplitude and the spatial frequency in Noise Power Spectrum curves.
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AEC/IR reduce the dose by 43–91% while maintaining diagnostic image quality.