Brachytherapy QA Phantom is a reliable medium that contains specific, known test objects for repeatable qualitative assessment of ultrasound scanner performance over time. Use for transrectal ultrasound QA and calibration of brachytherapy systems. Contains targets to assess volume measurements, internal grid accuracy, and probe retraction accuracy. When scanning toward the top of the phantom, a partial grid of wires appears. These wires should line up with the grid that appears on your screen, thus ensuring correct vertical and horizontal distance measurements. Five crosswires are embedded within the phantom to determine if the probe is being retracted the specified distance. Turn the probe 60° to the right or left to visualize and measure the volume of three different calibrated objects, one of which is nonspherical. Zerdine®.
- Internal grid assessment
- Probe retraction step assessment
- Volume verification
Specifications: Attenuation Coefficient: 0.50 ±, 0.05 dB/cm/MHz • Speed: 1540 m/s ±, 6 m/s • Target: Internal Grid Assessment: 0.5-mm diameter nylon monofilament, 13 targets, Position: B1-B5, C4, D3, F1-F5 • Probe Retraction Assessment: 0.5-mm nylon monofilament, Five targets, Spacing: 0.1 cm, 1 cm, 1.5 cm, and 0.5 cm, Position: along row 4 • Volumes: Zerdine®, approximately 4 cc (S), 9 cc (M) and 23 cc (L) (Exact volumes provided on certification sheet)