1 Department of Ultrasonography, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650032, PR China.
2 Department of Radiology, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650032, PR China.
3 Department of Radiology, Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650032, PR China.
4 Department of Ultrasonography, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650032, PR China. Electronic address: 2516451935@qq.com.