[The use of imaging procedures following kidney transplantation--diagnostic strategy].

: Despite the continuously increasing number of successfully transplanted kidneys, graft and patient are still "threatened" by several postoperative complications as acute and chronic rejection, acute tubular necrosis, urologic and vascular complications and disorders caused by immunosuppressive medication. An early and safe detection of these conditions is of high clinical importance and a challenge to diagnostic imaging. All radiologic methods and nuclear medicine have their value for transplantation diagnostics, but in recent years a trend to noninvasive methods with no contrast media and little discomfort to the patient is clearly visible (sonography, magnetic resonance). Rational diagnostic strategies for various conditions after renal transplantation are described.