Using four-point subcutaneous injection of lymphatic contrast-enhanced ultrasound to diagnose lymphedema of lower extremity - Li, Jiaping; Luo, Jia; Li, Manying; Lin, Manxia; Liu, Yingli; Zhong, Jiaqian; Wei, Laina; Qi, Jian; Li, Ping; Xie, Xiaoyan; Zheng, Yanling (Quantitative Imaging in Medicine and Surgery, 2024)