Journal of vascular and interventional radiology : JVIR
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J Vasc Interv Radiol · Aug 2003
Comparative Study Clinical TrialGadolinium, carbon dioxide, and iodinated contrast material for planning inferior vena cava filter placement: a prospective trial.
To prospectively compare the diagnostic accuracy of CO(2) and gadolinium to iodinated contrast material for inferior vena cavography before inferior vena cava (IVC) filter placement. ⋯ CO(2) and gadolinium had limitations when compared with iodinated contrast material. Gadolinium provided superior consistency in identifying relevant landmarks for filter placement. CO(2) demonstrated significantly greater mean correlative error than gadolinium at initial and repeat readings.
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J Vasc Interv Radiol · Aug 2003
Image-guided percutaneous chemical and radiofrequency tumor ablation in an animal model.
To determine whether combining acetic acid instillation before radiofrequency (RF) ablation can improve local tissue electrical conductivity, RF energy deposition, intratumoral heating, and tumor necrosis in a large animal model. ⋯ Addition of acetic acid injections to RF ablation substantially increases tumor destruction compared with RF or injection therapy alone. However, lower acetic acid concentrations in saturated NaCl produced greater tumor coagulation, suggesting that, in this hypovascular tumor model, alterations in electrical conductivity play a more important role in increasing tumor ablation efficiency than do the additional ablative effects of acetic acid.