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Thromboembolic Disease

Comparison of Combined CT Pulmonary Angiography and Venography with Bilateral Leg Sonography in 70 Patients

Kavita Garg1, Jennifer L. Kemp1, Dennis Wojcik1, Sebastian Hoehn2, Robert J. Johnston1, Loren C. Macey1 and Anna E. Barón3

1 Department of Radiology, Veterans Affairs Medical Center and University of Colorado, 1055 Clermont St., Denver, CO 80220.
2 Department of Radiology, Charite Hospital, Chausseestr. 100, Humboldt-Univeritat zu Berlin, 10115 Berlin, Germany.
3 Department of Preventive Medicine and Biometrics, School of Medicine, University of Colorado Health Sciences Center, 4200 E. 9th Ave., Denver, CO 80262.



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  		Fig. 1. —47-year-old man with acute deep venous thrombosis. CT venogram obtained at distal thigh shows intraluminal filling defect (arrows) in distal superficial veins bilaterally. Note mild stranding of perivenous fat. Common femoral veins and right external iliac vein shown only on CT venography also were involved (not shown).

 


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  		Fig. 2. —66-year-old man with flow artifact. CT venogram at mid thigh shows apparent central filling defect in right superficial vein (white arrow) that was seen on multiple contiguous images (not shown). Note more homogeneous and satisfactory opacification of left superficial vein (black arrow).

 


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  		Fig. 3. —70-year-old man with tiny nonoccluding thrombus in left superficial vein. CT venogram at mid thigh shows nonoccluding filling defect (arrow) in posterior aspect of duplicated segment of left superficial vein. Note slower flow on right.

 


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  		Fig. 4A. —66-year-old man with acute deep venous thrombosis (DVT). CT venogram at confluence of iliac veins shows vague filling defect (arrow) in left aspect of confluence. One observer interpreted this defect as suggestive of DVT, and another observer interpreted it as negative for DVT.

 


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  		Fig. 4B. —66-year-old man with acute deep venous thrombosis (DVT). CT scan of pelvis obtained 3 days after A at same level clearly shows intraluminal filling defect (arrow) at confluence.

 

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