Role of bioresorbable stents in the superficial femoral artery.

Bioresorbable stents or scaffolds are a new technology in the treatment of coronary and peripheral vascular disease. Their goal is to provide adequate support to the dilated vessel segment for the time needed and to disappear through a controlled resorption process afterwards. Doing so they can offer the early advantages and avoid the late complications related to stent placement such as stent-induced restenosis, stent fracture and problems at reintervention.

Femoro-saphenous arteriovenous access-related lower limb ischemia treated by distal arteries percutaneous angioplasty.

This is the first reported case of transposed femoro-saphenous angio-access complicated after four years by distal ischemia, which was successfully treated by percutaneous transluminal angioplasty (PTA) of the distal femoral and popliteal artery. Endovascular recanalization and angioplasty of the distal vessels offers a minimally invasive approach with preservation of the angio-access in these patients with high comorbidities.

Noninvasive monitoring of radiotherapy-induced microvascular changes using dynamic contrast enhanced magnetic resonance imaging (DCE-MRI) in a colorectal tumor model.

Purpose: To examine dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) with a macromolecular contrast agent (P792) to visualize effects of radiotherapy (RT) on microvascular leakage in a colorectal cancer model.

Methods And Materials: CC531 tumors were induced in WAG/Rij rats. DCE-MRI was performed before and 5 days after 5 x 5 Gy of RT and parametric maps generated of the endothelial transfer constant (K(trans)) and the fractional interstitial space (Ve) according to the Tofts model.