Refraction-Enhanced Tomosynthesis of a Finger Joint by X-Ray Dark-Field Imaging
Refraction-Enhanced Tomosynthesis of a Finger Joint by X-Ray Dark-Field Imaging
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DOI：
10.1143/jjap.46.l608
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发表时间：
2007-06
影响因子：
1.5
通讯作者：
D. Shimao;T. Kunisada;H. Sugiyama;M. Ando
中科院分区：
文献类型：
--
作者：
D. Shimao;T. Kunisada;H. Sugiyama;M. Ando
利用最简单的平移相加层析合成算法，实现了基于X射线暗场成像（XDFI）的手指关节断层图像。通过同步旋转对象和探测器，以1°为增量，在10°范围内总共采集11个视图的原始XDFI断层合成图像数据。入射X射线能量为单色36.0 keV，来自同步辐射。采集11个视图的原始图像数据的总剂量相当于一个XDFI图像的总剂量。在不增加X射线剂量的情况下，获得了手指关节（包括关节软骨，这是传统断层合成不可见的）的清晰断层图像。
A finger joint tomogram based on X-ray dark-field imaging (XDFI) was demonstrated using the simplest shift-and-add tomosynthesis algorithm. Raw XDFI image data for tomosynthesis were acquired in a total of 11 views through 10°, in increments of 1°, by rotating the object and detector synchronously. Incident X-ray energy was monochromatic 36.0 keV, derived from synchrotron radiation. The total dosage in acquiring 11 views for raw image data was equivalent to that of one XDFI image. A clear tomogram was obtained of a finger joint (including articular cartilage, which is invisible by conventional tomosynthesis) without an increase in X-ray dosage.