PVT can be diagnosed by ultrasonography with Doppler imaging, Shear wave elastography computed tomography (CT), and magnetic resonance (MR). Color Doppler ultrasonography (CDUS) is often the first choice of investigation because sensitivity and specificity range from 60% to 100% .Ultrasonography without Doppler imaging does not provide information about flow dynamics. Given its high negative predictive value, if CDUS confirms portal vein patency, then no further studies are required. Shear Wave Elastography is a newer technique that depends on assessing properties of soft tissue to resist a force-induced deformation due to its intrinsic stiffness. Pathological tissues often have less elasticity than the healthy tissue surrounding it. Several ultrasound elastography techniques using different excitation methods have been developed. These techniques are classified into strain elastography, which is a semi-quantitative method that uses internal or external compression for tissue stimulation, and shear wave elastography, which measures the ultrasound-generated shear wave speed at different locations in the tissue. All liver elastography techniques have a standardized examination technique, with the patient in a supine position, while the measurements are performed through the right liver lobe.