DAI Jian1, MA Zhou-peng1, ZHANG Shun-zhuang1, CHEN Zhong-da1, ZHU Jian-zhong2
1. Department of Radiology, Affiliated Cixi Hospital of Wenzhou Medical College, Cixi Zhejiang 315300, China;2. Department of Radiology, Affiliated Hospital of Taishan Medical College, Taishan Shandong 271000, China