[Numerical angiography in the evaluation of arterial hypertension].

Intravenous numeric angiography is a new method of medical imaging for investigation of possible renovascular causes of arterial hypertension. A non-invasive examination, it is less costly than conventional renal arteriography and can be performed in outpatients. Satisfactory images of the renal arteries were obtained in 80 p. cent of 200 hypertensive patients, and the presence of lesions was confirmed in 47 cases.