Evaluation of Advanced US Tools in Assessing Allograft Complications

This study will focus on monitoring renal after transplantation using all US advanced technology. Aim one will concentrate on the 3D US in assessing artery stenosis (TRAS) compared to the gold standard. Aim two focuses on will concentrate on Ultrasound elastography in assessing renal stiffness. Aim three will compare US colour modes such as PD, CD and MFI to assess renal perfusion in three groups. Duration: 18 Months; participants will have a patient information sheet; once they are happy to participate, consent will be obtained. Study data will be entered into a database encrypted and stored in the department. Only the study principal investigator (PI) will know the study database password.