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Diagnostic ultrasound ( PDFDrive )

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CHAPTER 18 Organ Transplantation 663

FIG. 18.46 Renal Vein Stenosis. Color Doppler of renal vein anastomosis shows focal area of aliasing (white arrow). Spectral interrogation in

region of aliasing shows velocities of 200 cm/sec. Spectral interrogation proximal to aliasing shows velocities of 40 cm/sec (yellow arrow), indicating

a hemodynamically signiicant stenosis of the renal vein.

A

B

C

D

E

F

FIG. 18.47 Ureteral Strictures. (A) Sagittal sonogram and (B) percutaneous nephrostogram show grade 3 pelvocaliectasis secondary to a

stricture at the ureteropelvic junction (arrow). (C) Sagittal sonogram shows grade 4 pelvocaliectasis. The distal ureter was not seen on ultrasound.

(D) Percutaneous nephrostogram shows a stricture at the ureterovesicular junction (arrow). (E) Sagittal sonogram shows grade 3 pelvocaliectasis,

produced by (F) a stricture at the ureterovesicular junction (arrows). arrowheads, Tiny nonobstructing stone; B, bladder; U, ureter.

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