1. Department of Radiology, Yan` an Hospital of Kunming City (Yanan Hospital Affiliated to Kunming Medical University), Kunming, People’s Republic of China
2. Department of Radiology, The Second Affiliated Hospital of Kunming Medical University, Kunming, People’s Republic of China
3. School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, People’s Republic of China
4. Department of Radiology, Yunnan Cancer Hospital (The Third Affiliated Hospital of Kunming Medical University), Kunming, People’s Republic of China
5. Department of Ultrasound, Yunnan Cancer Hospital (The Third Affiliated Hospital of Kunming Medical University), Kunming, People’s Republic of China