双源双能量CT虚拟单色成像用于急性缺血性卒中的可视化
Virtual monochromatic imaging in dual-source and dual-energy CT for visualization of acute ischemic stroke
摘要：
我们最近开发了一种模拟急性缺血性中风的体模。我们尝试通过双能量CT（DECT）将虚拟单色图像应用于该模型来可视化急性期脑梗死。虚拟单色图像创建使用DECT从40至100 keV，每10 keV和从60至80 keV，每1 keV，在三个能量条件下的管电压与薄（Sn）过滤器。CNR值的计算使我们能够评估急性期脑梗死的可视化。虚拟单色图像的CNR值在80 kV / Sn 140 kV下在68 keV处最高，在100 kV / Sn 140 kV下在72 keV处最高，在140 kV / 80 kV下在67 keV处最高。65和75 keV之间的虚拟单色图像的CNR值显著高于所有其他创建的能量图像获得的CNR值。因此，可实现可视化急性缺血性卒中的最佳条件。
英文摘要：
We have recently developed a phantom that simulates acute ischemic stroke. We attempted to visualize acute-stage cerebral infarction by applying virtual monochromatic images to this phantom using dual-energy CT (DECT). Virtual monochromatic images were created using DECT from 40 to 100 keV at every 10 keV and from 60 to 80 keV at every 1 keV, under three energy conditions of tube voltages with thin (Sn) filters. Calculation of the CNR values allowed us to evaluate the visualization of acute-stage cerebral infarction. The CNR value of a virtual monochromatic image was the highest at 68 keV under 80 kV / Sn 140 kV, at 72 keV under 100 kV / Sn 140 kV, and at 67 keV under 140 kV / 80 kV. The CNR values of virtual monochromatic images between 65 and 75 keV were significantly higher than those obtained for all other created energy images. Therefore, optimal conditions for visualizing acute ischemic stroke were achievable.
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