Treatment procedures

The 90Sr/ 90Y seed train system delivers beta radiation by means of a 5F multilumen, noncentering catheter (with closed lumen for the radiation source train and the fluid return and one open lumen for the guidewire), which is compatible with a 8F guiding catheter and 0.014" guidewire. The source is designed as a 90Sr/90Y seed train with a treatment length of 30 mm (12 seeds), 40 mm (16 seeds) or 60 mm (24 seeds). The source train has nonradioactive, X-ray markers at each end (Fig. 15.4). The source ribbon is advanced and withdrawn hydraulically by a hand-held afterloader.