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Diagnostic ultrasound ( PDFDrive )

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CHAPTER 27 Peripheral Vessels 985

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F

FIG. 27.28 Acute Deep Venous Thrombosis (DVT). (A) Transverse duplex Doppler image shows external iliac vein without demonstrable

venous low (*). The top of the thrombus is not seen, so sonographic evaluation continues to the common iliac vein and inferior vena cava (IVC).

(B) Longitudinal image of occluded external iliac vein shows large amount of low-level echoes within the vein, without low on spectral or color

Doppler imaging. (C) Longitudinal image of caudal IVC shows no deinite echoes on gray-scale imaging, conirmed with duplex Doppler imaging

(not shown). (D) Duplex Doppler longitudinal image of the mid IVC shows no thrombus. (E) Longitudinal gray-scale image of the intrahepatic IVC

shows no thrombus. (F) Duplex Doppler longitudinal image of the intrahepatic IVC without thrombus, with normal spectral Doppler waveform.

Because the spectral waveform in the left common femoral vein was normal (not shown), thrombus in this patient extended into either the right

external or common iliac vein, but not into the IVC. See also Video 27.13.

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