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Preliminary study of X-ray and laser digital image of kidney endocast

机译：肾脏内铸物的X射线和激光数字图像的初步研究

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摘要

Kidney endocasts are the only way to show intrarenal arteries and the collecting system of pathologically unchanged human kidney. We describe different methods of digital endocast three dimensional (3D) imaging with the use of X-ray and laser radiation. Images of several kidney endocasts were obtained with the use of: (i) X-ray microtomography, (ii) Medical Computed Tomography (CT) and (iii) 3D Laser Scanner. The images were compared with an appearance of endocast and the images of kidney vessels obtained during angiographic CT protocols in clinical practice. The X-ray computed microtomography is characterized by very high resolution; however, relatively small field of view is available at high magnification and long data acquisition time is needed. Laser 3D scanner has a comparable resolution, but it was not possible to obtain full 3D reconstruction of the sample structure. The cast was too complex for reconstruction with limited number of projection obtained with the use of the laser scanner. Medical CT has limited resolution but time of data acquisition was very short. The achieved images were comparable with those from Angio-CT protocols. Digital imaging of kidney endocasts is possible with current imaging obtained by means of X-ray imaging techniques. The obtained images are useful for further study, such as statistical analysis, especially those obtained from Medical CT.
机译：肾脏内窥镜检查是显示肾内动脉和病理上未改变的人类肾脏的收集系统的唯一方法。我们描述了使用X射线和激光辐射进行数字内播三维（3D）成像的不同方法。使用以下方法获得了多个肾脏内铸物的图像：（i）X射线显微断层扫描，（ii）医学计算机断层扫描（CT）和（iii）3D激光扫描仪。在临床实践中，将图像与内窥镜的外观和在血管造影CT方案中获得的肾血管图像进行了比较。 X射线计算机断层扫描的特点是分辨率非常高。但是，在高放大倍率下可获得相对较小的视野，并且需要较长的数据采集时间。激光3D扫描仪具有可比的分辨率，但无法获得样品结构的完整3D重建。使用激光扫描仪获得的投影数量有限，铸件太复杂，无法进行重建。医学CT的分辨率有限，但数据采集时间很短。所获得的图像与Angio-CT协议的图像相当。借助X射线成像技术获得的当前成像可以对肾脏内脏疾病进行数字成像。所获得的图像可用于进一步的研究，例如统计分析，尤其是从Medical CT获得的图像。

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