acoustic shadow elimination的用法和样例：
- Most of the branchial cysts, neurinomas, lymphoma had lateral acoustic shadow.
- Sonography showed curvilinear hyperechogenicity with an acoustic shadow.
- Results Ossificans myositis had specific features on sonograms.Mass had low level echo early phase and strong echo later stage with acoustic shadow.
- By the process of moving area detection, yawp elimination, object detection based on connected region label, shadow elimination, the whole vehicle targets area is obtained.