Ultrasonic imaging characteristics of transplanted kidneys with delayed graft function

Area of Science:

• Nephrology
• Radiology
• Medical Imaging

Background:

• Delayed graft function (DGF) is a common complication after kidney transplantation.
• Early identification of DGF is crucial for patient management and graft survival.
• Ultrasonic imaging offers a non-invasive method to assess transplanted kidney perfusion.

Purpose of the Study:

• To investigate the ultrasonic imaging characteristics of transplanted kidneys in patients with DGF.
• To compare the microcirculation perfusion parameters between DGF and normal graft function (NGF) groups.

Main Methods:

• Ultrasonography was performed on 44 kidney transplant recipients.
• Time-intensity analysis of contrast agent perfusion was conducted.
• Comparison of perfusion parameters (arrival time, time to peak, intensity) between DGF and NGF groups.

Main Results:

• The DGF group demonstrated significantly earlier arrival time, shorter time to peak, and higher arrival and peak intensities compared to the NGF group (P < 0.05).
• Increased intensity variations in different renal cortices and decreased time variation were observed in the DGF group (P < 0.05).

Conclusions:

• Transplanted kidneys with DGF exhibit enhanced microcirculation perfusion characterized by earlier, faster, and more intense contrast agent dynamics.
• Ultrasonic imaging can differentiate DGF from NGF based on distinct perfusion patterns and intensity variations within the renal cortex.