1. Key Laboratory of Drug‐Targeting and Drug Delivery System of the Education Ministry Sichuan Engineering Laboratory for Plant‐Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University Chengdu 610064 P. R. China
2. Department of Radiology Zhuhai People's Hospital Jinan University Zhuhai 519000 P. R. China