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Using Dual-Detector Helical CT Angiography to Detect Deep Venous Thrombosis in Patients with Suspicion of Pulmonary Embolism

Diagnostic Value and Additional Findings

E. E. Coche1, X. L. Hamoir1, F. D. Hammer1, P. Hainaut2 and P. P. Goffette1

1 Department of Radiology, Cliniques Universitaires St-Luc, av. Hippocrate 10, B-1200 Brussels, Belgium.
2 Department of Internal Medicine Unit, Cliniques Universitaires St-Luc, B-1200 Brussels, Belgium.



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  		Fig. 1A. —52-year-old man with mild dyspnea and previous cardiac failure. Enhanced dual-slice CT scan (2.7-mm collimation) shows large hypodensity located in left lower lobe pulmonary artery (arrow) consistent with acute pulmonary embolism.

 


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  		Fig. 1B. —52-year-old man with mild dyspnea and previous cardiac failure. Helical CT scan (10-mm collimation) obtained at level of lower abdomen shows hypodensity (arrow) within inferior vena cava caused by thrombus.

 


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  		Fig. 1C. —52-year-old man with mild dyspnea and previous cardiac failure. Sequential CT scan (10-mm collimation) obtained at level of bladder reveals extensive thrombosis (arrow) of left external iliac vein.

 


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  		Fig. 2A. —70-year-old woman presenting with acute dyspnea several days after neurosurgery procedure. Helical CT scan of chest (2.7-mm collimation) reveals numerous segmental (arrows) and subsegmental hypodensities within arteries consistent with acute pulmonary emboli.

 


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  		Fig. 2B. —70-year-old woman presenting with acute dyspnea several days after neurosurgery procedure. Lower leg helical CT scan (6.5-mm collimation) obtained 2 min after contrast medium injection shows small hypodensity (arrow) in peroneal vein of left calf consistent with deep venous thrombosis. Color Doppler sonography did not reveal any abnormality in this area.

 


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  		Fig. 2C. —70-year-old woman presenting with acute dyspnea several days after neurosurgery procedure. Phlebography of left lower limb shows deep venous thrombosis (arrows) in left peroneal vein.

 

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