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X-ray dose and associated risks from radiofrequency catheter ablation procedures

¹ Angiocardiographic Suite, Royal Victoria Hospital, Grosvenor Road, Belfast, BT12 6BA, ² Northern Ireland Medical Physics Agency, Forster Green Hospital, 110 Saintfield Road, Belfast BT8 4HD and ³ University of Ulster at Jordanstown, Shore Road, Newtownabbey, County Antrim, BT37 OQB, UK

View larger version (18K): [in a new window]   Figure 1. Skin dose as a function of dose–area product (DAP) for radiofrequency ablation procedures, n=50, r=0.71, p<0.01. The solid regression line was forced through the origin. (--), maximum rate of increase of skin dose with DAP; (---) threshold skin doses for transient and main erythema.

View larger version (16K): [in a new window]   Figure 2. Skin dose as a functionof fluoroscopy time for radiofrequency ablation procedures, n=50, correlation coefficient (r)=0.64, p<0.01.The regression line was forced through the origin. (---), threshold skindoses for transient and main erythema.