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首页> 外文会议>International Workshop on Digital Mammography(IWDM 2006); 20060618-21; Manchester(GB) >Adaptation of Image Quality Using Various Filter Setups in the Filtered Backprojection Approach for Digital Breast Tomosynthesis
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Adaptation of Image Quality Using Various Filter Setups in the Filtered Backprojection Approach for Digital Breast Tomosynthesis

机译：在数字化乳房断层合成的滤波反投影方法中使用各种滤波器设置来适应图像质量

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摘要

The main limitations of conventional projection mammography consist in tissue overlap and missing depth information. These deficiencies are intended to be reduced by the new technique of digital breast tomosynthesis. From a set of radiographic projections, acquired at different view angles in a linear tomosynthesis research system setup, 3-D slices of the scanned breast region are reconstructed. As the method of choice for the reconstruction we use filtered backprojection. By applying different filters with task-adapted parameters this method allows to control the image quality regarding noise, spatial resolution and artifacts. In order to investigate the basic effects of the various settings in the filtering step the method is first applied to simulated data. The impact of the selected filter functions is then demonstrated with clinical data.
机译：传统投影乳腺摄影的主要局限在于组织重叠和深度信息缺失。这些缺陷旨在通过数字化乳房断层合成的新技术来减少。从在线性层析合成研究系统设置中以不同视角获取的射线照相投影集，重建扫描的乳房区域的3D切片。作为重建的首选方法，我们使用了滤波反投影。通过应用具有任务自适应参数的不同滤镜，该方法可以控制有关噪声，空间分辨率和伪像的图像质量。为了研究过滤步骤中各种设置的基本效果，首先将该方法应用于模拟数据。然后，通过临床数据证明所选过滤器功能的影响。

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