目的研究X线平片测量法和X线透视法在腰交感神经节穿刺中的到位成功率及其并发症。
Objective To study the successful puncture rate and complications of lumbar sympathetic ganglion puncture directed by X-ray fluoroscopy.
由于透视法的缘故，在地球上我们观察到的银河系圆盘的边缘是一道明亮光带，在这幅图像中这道光带从中部一直延伸到下方的地平线。
The disk of the Milky Way galaxy, seen edge-on from Earth's perspective, is the bright band running horizontally down the middle.
此画没有用透视法照样画出物象的空间和距离，是由于画家灵活运用了皴线和点。
This painting does not use the same perspective to draw images of space and distance, is due to the painter flexibility in the use of the Cun lines and points.
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