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公开(公告)号：US07697661B2
公开(公告)日：2010-04-13
申请号：US11830902
申请日：2007-07-31
IPC分类号： A61B6/04
摘要： In a method for the obtaining a tomosynthesis image for a more selective detection of radiology signs, a dose distribution strategy is proposed. The strategy is defined as a function of a substantially uniform depth-of-focus for a variety of sizes and classes of radiology signs. This strategy is coupled with a digital filtering aimed at ensuring optimum propagation of the signal-to-noise ratio beyond the frequency spectrum. This digital filtering is done by means of a class of adaptive filters required to control the propagation of the noise during the reconstruction. The filter to be applied to each projection of the X-ray tube (4) depends on the dose assigned to this projection.
摘要翻译： 在用于获得用于放射学符号的更选择性检测的断层合成图像的方法中，提出了剂量分布策略。 该策略被定义为针对各种尺寸和类别的放射学符号的基本均匀的焦点深度的函数。 该策略与数字滤波相结合，旨在确保信噪比超出频谱的最佳传播。 这种数字滤波是通过在重构期间控制噪声传播所需的一类自适应滤波器完成的。 要应用于X射线管（4）的每个投影的滤光片取决于分配给该投影的剂量。
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公开(公告)号：US20080056441A1
公开(公告)日：2008-03-06
申请号：US11830902
申请日：2007-07-31
IPC分类号： A61B6/00
摘要： In a method for the obtaining a tomosynthesis image for a more selective detection of radiology signs, a dose distribution strategy is proposed. The strategy is defined as a function of a substantially uniform depth-of-focus for a variety of sizes and classes of radiology signs. This strategy is coupled with a digital filtering aimed at ensuring optimum propagation of the signal-to-noise ratio beyond the frequency spectrum. This digital filtering is done by means of a class of adaptive filters required to control the propagation of the noise during the reconstruction. The filter to be applied to each projection of the X-ray tube (4) depends on the dose assigned to this projection.
摘要翻译： 在获得用于放射学符号的更选择性检测的断层合成图像的方法中，提出了剂量分布策略。 该策略被定义为针对各种尺寸和类别的放射学符号的基本均匀的焦点深度的函数。 该策略与数字滤波相结合，旨在确保信噪比超出频谱的最佳传播。 这种数字滤波是通过在重构期间控制噪声传播所需的一类自适应滤波器完成的。 要应用于X射线管（4）的每个投影的滤光片取决于分配给该投影的剂量。
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