Zhang Haiyu; Zhou Ying; Zhang Yuhua; Tang Xiaoning; Ni Yajun.Department of Radiol-ogy; Chinese Petrol Wulumuqi Petrochemical Corporation Hospital; Wulumuqishi 830019; China;

• 中国石油乌鲁木齐石化公司职工医院放射科;中国石油乌鲁木齐石化公司职工医院口腔科;