case_images: PMC10721294_01
case_images: POCUS pulsed wave Doppler with aliasing at anastomosis level showing turbulent flow even when adjusted for high pulse repetition frequency to reduce noise.
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case_images: Prerenal causes were ruled out and her tacrolimus level was within goal range (7-9 ng/ml), so a kidney transplant ultrasound was performed by another interventional nephrologist, showing high velocities within the graft renal artery near the iliac artery anastomosis with aliasing (confetti-like pattern) suggesting turbulent flow, increasing in the vicinity of a kinking image near the renal hilum (Figure 1,2,3) even when pulse repetition frequency (PRF) was adjusted for high velocities (> 95.9 cm/s).
case_images: CT scan reconstruction showing both kidney transplant artery stenosis (red arrow) and kinking (blue arrow).
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case_images: A computerized tomography (CT) angiogram was performed, confirming RAS at the anastomosis, and kinking of the graft renal artery (Figure 4).