1 Department of Magnetic Resonance Imaging, The Second Affiliated Hospital of Qiqihar Medical College, 64 Zhonghua Xi Lu, Jianhua District, Qiqihar City, Heilongjiang Province, China. fserymr@qmu.edu.cn.
2 Department of Ultrasound, The Second Affiliated Hospital of Qiqihar Medical College, Qiqihar City, China.
3 Department of Magnetic Resonance Imaging, The Second Affiliated Hospital of Qiqihar Medical College, 64 Zhonghua Xi Lu, Jianhua District, Qiqihar City, Heilongjiang Province, China.
4 Department of Imaging, The Second Affiliated Hospital of Qiqihar Medical College, Qiqihar City, China.
5 Department of Urology, The Second Affiliated Hospital of Qiqihar Medical College, Qiqihar City, China.