1. Arteriovenous Fistula After Biopsy of Renal Transplant: Detection and Monitoring With Color Flow and Duplex Ultrasonography 
MARILYN J. MORTON, D.O., J. WILLIAM CHARBONEAU, M.D. 
Mayo Clinic Proceedings 
Volume 64, Issue 5, Pages (May 1989)
DOI: /S (12)
Copyright © 1989 Mayo Foundation for Medical Education and Research Terms and Conditions

2. Fig. 1
A, Transverse ultrasound study of renal transplant, demonstrating 1.8-cm cystic mass adjacent to renal sinus (at site of percutaneous renal biopsy). B, Doppler spectral tracing within cystic space, showing high-velocity arterial waveform with forward flow in diastole and associated spectral broadening.
Mayo Clinic Proceedings  , DOI: ( /S (12) )
Copyright © 1989 Mayo Foundation for Medical Education and Research Terms and Conditions

3. Fig. 2
Transverse color flow Doppler images of renal transplant. A, At 12 days after percutaneous renal biopsy, multicolored display in cystic space is due to changing direction of swirling blood. Site of leak from segmental artery (arrows) is evident as a narrow jet of yellow, indicating high-velocity flow. B, At 4 weeks after renal biopsy, echogenic thrombus is filling vascular space (arrows) and no flow is evident.
Mayo Clinic Proceedings  , DOI: ( /S (12) )
Copyright © 1989 Mayo Foundation for Medical Education and Research Terms and Conditions