Pitfalls in CT Venography of Lower Limbs and Abdominal Veins

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Key Points

To review technical challenges, imaging artifacts, and anatomical variants that can lead to misinterpretation during CT venography of the lower limbs and abdominal vasculature.
Narrative and pictorial review of computed tomography venography protocols and image interpretation.
Evaluation of diagnostic traps including incomplete contrast mixing, physiological compression, and artifactual filling defects.
Inflow effects, pseudo-thrombi from unmixed blood, and collateral flow frequently mimic true deep vein thrombosis.
Anatomic compression syndromes, such as May-Thurner syndrome, require distinction from acute thrombotic occlusions.
Optimizing scan delay, contrast administration protocols, and patient positioning reduces the incidence of false-positive findings.

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Reviews diagnostic pitfalls and artifacts in CT venography of abdominal and lower extremity veins, indicating techniques to avoid misdiagnosis.

Pitfalls in CT Venography of Lower Limbs and Abdominal VeinsB. Ghaye1, D. Szapiro, V. Willems and R. F. DondelingerAudio Available | Share

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Ghaye et al. (2002) studied this question.

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