Tianjin institute of Urology, The Second Hospital of Tianjin Medical University, 300211, Tianjin, China. School of Future Technology, Xi'an Jiaotong University, 710049, Xi'an, Shaanxi, China. Department of Urology, Tangdu Hospital, The Air Force Military Medical University, Xi'an, Shaanxi, China. Department of Radiology, Tianjin Medical University Second Hospital, Tianjin, China. Tianjin institute of Urology, The Second Hospital of Tianjin Medical University, 300211, Tianjin, China. jiangning@tmu.edu.cn.