Product Description


  • Geometric Consistency with the treatment planning computer
  • Water tank allows for phantom coupling and needle guidance measurements

Brachytherapy QA Phantom Model 045B Includes:

  • (1) Brachytherapy QA Phantom
  • (1) Water Tank
  • User Guide
  • 48-Month Warranty
  • Certificate of Compliance


  • Dimensions: 14 x 11 x 7.5 cm
  • Phantom Weight: 4 lbs
  • Housing Material: PVC Plastic
  • Tank Material: ABS
  • Membrane: Saran-based laminate
  • Tissue-Mimicking Material: Zerdine® solid elastic hydrogel
    • Freezing point: 0°C
    • Melting point: Above 100°C
    • Speed of Sound: 1540 m/s
    • Other: Compatible with harmonic imaging
    • Number of targets: 13
    • Wire: 500-micron, nylon monofilament
    • Number of targets: 5
    • Wire: 100-micron, nylon monofilament
    • Spacing: 0.5 cm and 1 cm
    • Material: Zerdine® gel–hyperechoic with respect to background
    • Size of target 1: ~4 cc
    • Size of target 2: ~9 cc
    • Size of target 3: ~20 cc

A robust prostate brachytherapy QA program is ensures accurate image-guidance and dosimetry calculations. The CIRS Model 045B offers a complete solution for implementing a QA program specific to transrectal ultrasound guidance of prostate brachytherapy, as recommended by AAPM Task Group 128.

The phantom enables users to check key imaging parameters such as depth of penetration, axial and lateral resolution, distance, area, volume, and geometric consistency with the treatment planning system.

The phantom is supplied with a water tank for vertically coupling the transducer to the phantom scanning membrane. Brachytherapy needle grid QA can be accomplished using the space available inside the water tank as specified by Goldstein et al.

The tank has two angled slots to allow the phantom to be positioned at a 30° angle which simplifies use with floor-mounted TRUS systems. When testing table-mounted TRUS systems, the phantom membrane can be oriented vertically.

US Patent #5196343


Manufacturer CIRS
Country of Manufacture United States
Item Ships From Virginia
GSA Contract Number V797D-40246

Literature 1

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If you encounter a problem with this item, please contact Customer Service within 14 days of product receipt. If unable to correct the problem, a return material authorization (RMA) number will be issued. Restocking fees may apply at the discretion of the manufacturer. All returns should be packed in the original cases and/or packaging and must include any accessories, manuals and documentation that shipped with the product. The RMA number must be clearly indicated on the outside of each returned package. CIRS recommends that you use a carrier that offers shipment tracking for all returns and insure the full value of your package so that you are completely protected if the shipment is lost or damaged in transit. If you choose not to use a carrier that offers tracking or insure the product, you will be responsible for any loss or damage to the product during shipping. CIRS will not be responsible for lost or damaged return shipments. Return freight and insurance is to be pre-paid.


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