1 Department of Radiology, The Second Affiliated Hospital of Harbin Medical University, No. 246 Xuefu Road, Nangang District, Harbin, 150081, Heilongjiang Province, People's Republic of China.
2 Department of Radiology, The Second Affiliated Hospital of Harbin Medical University, No. 246 Xuefu Road, Nangang District, Harbin, 150081, Heilongjiang Province, People's Republic of China. jianghuijiejhj@163.com.