Development of fast (sub‐minute) micro‐tomography
Development of fast (sub‐minute) micro‐tomography
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快速（亚分钟）显微断层扫描的发展
DOI：
10.1063/1.3478197
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
T. Nakano
中科院分区：
文献类型：
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作者：
K. Uesugi;M. Hoshino;A. Takeuchi;Yoshio Suzuki;N. Yagi;T. Nakano
在SPring-8的医疗和成像光束线BL 20 B2上开发了一种X射线快速显微断层扫描系统。我们尝试了一种“连续旋转方法”，即样品在测量过程中在光束中保持旋转。图像采集与从步进电机控制器分支的触发脉冲同步。使用电子倍增器（EM）-CCD相机（C9100 - 02，1000×1000像素，30 fps，8 μm/像素，Hamamatsu Photonics）和光束监视器AA 40 P（Hamamatsu Photonics）作为图像检测器。探测器的有效像素尺寸为4.9 μm/pixel，空间分辨率约为15 μm。900个投影的总测量时间减少到36秒。GPGPU和SSD系统的使用也减少了重建时间。使用这些技术，还进行了4-D（时间分辨3-D）显微成像的初步实验。
An x‐ray fast micro‐tomography system was developed at medical and imaging beamline BL20B2 in SPring‐8. We attempted a “continuous rotation method” whereby the sample keeps rotating in the beam during the measurement. The image acquisitions are synchronized with the trigger pulses branched from the stepper motor controller. An electron multiplier (EM)‐CCD camera (C9100‐02, 1000×1000 pixels, 30 fps, 8 μm/pixel, Hamamatsu Photonics) and beam‐monitor AA40P (Hamamatsu Photonics) were used as an image detector. The effective pixel size of the detector was 4.9 μm/pixel and the spatial resolution was about 15 μm. The total measurement time for 900 projections has been reduced to 36 s. The reconstruction time was also reduced using GPGPU and SSD system. Using these techniques, preliminary experiment for 4‐D (time resolved 3‐D) micro‐imaging has also been performed.