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Diagnostic Ultrasound - Abdomen and Pelvis

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Kidneys<br />

Anatomy: <strong>Abdomen</strong><br />

LEFT INTRARENAL ARTERY AND VEIN<br />

Renal cortex<br />

Color aliasing<br />

Intrarenal segmental arteries<br />

Main renal vein<br />

Intrarenal renal artery<br />

Low-resistance renal artery spectral<br />

Doppler waveform<br />

Venous waveform<br />

Segmental renal artery<br />

Renal artery spectral Doppler waveform<br />

with autotrace<br />

Renal Doppler indices<br />

(Top) Longitudinal color Doppler ultrasound of the left kidney shows renal artery branches as red <strong>and</strong> renal vein branches as blue. There<br />

is some color aliasing in the veins, shown as yellow. (Middle) In this spectral Doppler waveform of a left segmental renal artery, there is<br />

continuous flow throughout the cardiac cycle with a low- resistance pattern. The segmental renal vein shows mild phasicity. (Bottom)<br />

Spectral Doppler waveform of a left segmental renal artery in the transverse plane is shown. Doppler indices are normal: PSV of 37.3<br />

cm/s, EDV of 13.9 cm/s, <strong>and</strong> resistive index (RI) of 0.63.<br />

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