[Gadolinium digital cavography with ultrasound guidance in renal failure: report of 2 cases]. / Cavographie au gadolinium avec écho-guidage dans l'insuffisance rénale: à propos de 2 cas.

Iodine-induced renal failure is a major concern when considering angiography in patients with renal insufficiency. Previous studies have shown that gadolinium can perform well as a radiographic contrast agent and is not nephrotoxic at doses < or = 0.4 mmol/kg. We report high-quality images of the inferior vena cava, obtained by digital subtracted venography using power-injected gadodiamide through the common femoral vein. This technique, in combination with ultrasound, appears as a good alternative for insertion of vena cava filters in patients with renal failure or those with prior episodes of contrast induced renal failure or allergy.