Iterative Reconstruction in Head CT: Image Quality of Routine and Low-Dose Protocols in Comparison with Standard Filtered Back-Projection
Iterative Reconstruction in Head CT: Image Quality of Routine and Low-Dose Protocols in Comparison with Standard Filtered Back-Projection
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DOI：
10.3174/ajnr.a2749
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发表时间：
2012-02-01
影响因子：
3.5
通讯作者：
Brodoefel, H.
中科院分区：
文献类型：
--
作者：
Korn, A.;Fenchel, M.;Brodoefel, H.
背景和目的：IR 最近证明了其在腹部和胸部 CT 应用中降低噪音和减少剂量的能力。我们研究的目的是通过比较客观和主观图像质量与不同剂量水平的标准 FBP 来评估 IR 在头部 CT 中的潜在益处。 材料和方法：90 名连续患者被随机分配接受标准剂量（320 mAs；CTDI，60.1）或 15%（275 mAs；CTDI，51.8）和 30%（225 mAs；CTDI，51.8）和 30%（225 mAs；CTDI，60.1）的非增强和对比增强头部 CT。 CTDI，42.3）剂量减少。所有采集数据均在图像空间中使用 IR 进行重建，并对 FBP 和图像进行定量和定性评估 10。 结果：与 FBP 相比，IR 产生了较低的图像噪声 (P
BACKGROUND AND PURPOSE: IR has recently demonstrated its capacity to reduce noise and permit dose reduction in abdominal and thoracic CT applications. The purpose of our study was to assess the potential benefit of IR in head CT by comparing objective and subjective image quality with standard FBP at various dose levels.MATERIALS AND METHODS: Ninety consecutive patients were randomly assigned to undergo nonenhanced and contrast-enhanced head CT at a standard dose (320 mAs; CTDI, 60.1) or 15% (275 mAs; CTDI, 51.8) and 30% (225 mAs; CTDI, 42.3) dose reduction. All acquisitions were reconstructed with IR in image space, and FBP and images were assessed in terms of quantitative and qualitative 10.RESULTS: Compared with FBP, IR resulted in lower image noise (P