In a population of 59 patients with skull base tumors the authors made 75 MR brain and angiographic examinations to assess the efficacy of MR Angiography in the evaluation of vascular involvement of these tumors. The authors conclude that RMA gives a good map of the involvement of the great arterial and venous vessels from skull base tumors, but its low spatial resolution is not competitive with traditional angiographic techniques, in particular in the evaluation of the small arterial vessels and slow flow venous channels. MRA is useful in the follow-up of these tumors, particularly after radio-chemotherapy and after radiosurgery.
