OPTIMAL RADIATION FILTER FOR ANGIOGRAPHY

Abstract

The material and thickness of an additional filter have been investigated for angiography. The resule is that the copper filter reduce effectively, the patient dosage with little increase in tube loading. The 0.15-mm copper filter reduce skin exposure 35% using the 1.0-mm aluminum filter for abdominal angiography. The 0.15-mm copper filter achieves an exposure reduction as much as the 0.12-mm gadolinium filter with about 30% less tube loading under the same iodine contrast.