Transvenous serial xero-arteriography: a new non-invasive angiographic method for AV-fistulas in haemodialysis patients.

A new technique--transvenous serial Xero-arteriography (TSXA)--was evaluated in order to avoid the risks of the commonly used angiographic methods in av-fistulas. The contrast medium is injected intravenously in the contralateral forearm, an average of 5 per cent of the total contrast medium appearing in the arm to be examined. The Xerox-system now allows visualisation of both arteries and fistulated veins.