Application of synchrotron X-ray imaging to phase objects in orthopedics.
Application of synchrotron X-ray imaging to phase objects in orthopedics.
复制标题
同步加速器 X 射线成像在骨科相位物体中的应用。
DOI：
10.1107/s0909049502004624
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发表时间：
2002
影响因子：
2.5
通讯作者：
Y. Nakajima
中科院分区：
文献类型：
--
作者：
K. Mori;N. Sekine;H. Sato;D. Shimao;H. Shiwaku;K. Hyodo;H. Sugiyama;M. Ando;K. Ohashi;M. Koyama;Y. Nakajima
利用X射线的空间相干性，在日本SPring-8成功地进行了猪肋骨和人骨肉瘤标本的精细结构的新成像，入射X射线能量为30 keV。在骨小梁、小钙化和小骨折的外围出现的图像对比度是由在具有不同X射线折射率的这些对象的边界处的X射线的相移引起的。图像记录在没有增感屏的乳房X线摄影胶片上。使用不同的样品到胶片距离Z（例如Z = 5 m和Z约0 m）的图像对比度的比较表明，当对骨小梁、骨髓和密质骨中的小骨折进行成像以及对软骨进行成像时，前一图像总是信息量更大，即分辨率和/或图像对比度更好。利用同步辐射X射线对相位物体进行X射线摄影应该是骨科诊断的有力工具，特别是对于骨疾病。
Novel imaging of the fine structures of the ribs of a pig and a specimen of human osteosarcoma utilizing the spatial coherence of X-rays was successfully performed with an incident X-ray energy of 30 keV at SPring-8, Japan. The image contrast appearing at the periphery of trabecular bone, small calcifications and small fractures is caused by the phase shift of the X-rays at the boundary of these objects that have different X-ray refractive indices. The image is recorded on mammography film without an intensifying screen. Comparison of the image contrast using different sample-to-film distances, Z, such as Z = 5 m and Z approximately 0 m, showed that the former images were always more informative, i.e. better in resolution and/or image contrast when imaging trabecular bone, bone marrow and small fractures in compact bone, and for imaging cartilage. Radiography using synchrotron X-rays for phase objects should be a powerful tool for diagnosis in orthopedics, especially for bone disease.