ABSTRACTA total of 367 patients were studied using Hexabrix 320 as intravenous contrast material during CT scanning. Adverse events were recorded and analysed with respect to patient age and risk category. Hexabrix 320 produced adequate image quality in all patients. Whilst minor adverse events were relatively common, only a few moderate adverse events were seen and no severe adverse events were observed. Hexabrix 320 was noted to be very well tolerated in the elderly and well tolerated by the high risk patient.