Portal Vein Pressure Estimation and Portal Hypertension Discrimination Based on Subharmonic Scattering of Ultrasound Contrast Agent Microbubbles. - Gang Xu; Yun Wang 018; Huimin Lu 010; Changcan Li; Laixin Huang; Min Su; Huayu Yang; Deyu Li 004; Weibao Qiu; Minghao Sun; Jiayin Yang; Yilei Mao; et al. (IEEE Trans. Biomed. Eng., 2024)