Analysis of Blood Flow Information for the Diagnosis of Benign and Malignant Thyroid Nodules with Coarse Calcification 
QIU Qianyi,OUYANG Jiabao,CHEN Qi,WU Changjun
Chinese General Practice . 2019, (36): 4511 -4514 .  DOI: 10.12114/j.issn.1007-9572.2019.00.484