Pro-CT AAPM

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The Pro-CT AAPM phantom can be used for carrying out tests of computed tomography systems according to Report no. 1 of the AAPM (American Association of Physicists in Medicine).

Technical data (can be modified to customer specifications):

  • PMMA water tank:
    - inside cylinder diameter: 214 mm
    - outside cylinder diameter: 220 mm
    - lid has quick disconnect valves for ease of filling and draining
    - aluminum alignment pin (Ø6.3 mm x 76 mm) or a polystyrene TLD insert (for dose measurements) can be attached to the lid
  • Low contrast section:
    - placed at one end of the water tank
    - 12 fillable cavities 40 mm deep
    - two pieces of each cavity with diameters: 25.4, 19.0, 12.7, 9.5, 6.4 and 3.2 mm
    - spaced twice their diameter apart from the centerline
    - cavities can be easily filled from the outside with dextrose or sodium chloride solutions of various concentrations
  • Bone insert:
    - PTFE annulus
    - wall thickness 6.4 mm, 70 mm long
    - fits over all inserts to harden the beam
  • CT number linearity insert:
    - five 25 mm rods
    - material: polyethylene, PMMA (acrylic), polycarbonate, polystyrene and nylon
    - density values (g/cm³): 0.95, 1.19, 1.20, 1.05 and 1.1 respectively
  • Resolution insert:
    - eight sets / rows of air thru holes (five holes per set)
    - diameters of holes: 1.75, 1.5, 1.25, 1.00, 0.75, 0.61, 0.50 and 0.40 mm
    - distance between each hole is equal to the hole diameter
    - distance between rows 5 mm
    - 0.2 mm stainless steel wire positioned longitudinally for calculation of line-spread function
  • Slice thickness insert:
    - three aluminum strips, 0.5 mm thick and 25 mm wide angled at 45°, positioned at the centre and aligned vertically
  • Geometry insert (optional):
    - contains two pairs of aluminium wire ramps whose slope angle tangent is equal to 0.5
    - middles of ramps intersect on the same plane allowing for very precise evaluation of the slice location
    - contains two sets of four PMMA rods (Ø 10mm) placed in vertexes of two squares (sides 100 mm long)
  • Triple low contrast insert (optional):
    - contains three groups of low-contrast objects. In each group, there are rods of the same density, 20 mm in height and with a diameter ranging from 2 to 15 mm. Density difference between groups and surrounding material is exactly 0.3%, 0.6% and 1.0%
    - made of PMMA
  • Filling tubes
  • optional heavy duty carrying case (04-502)

 

Product features:

  • complies with:
    – Report no. 1 of the AAPM (American Association of Physicists in Medicine)
    – IEC 61223-3-5
    – IEC 61223-2-6
  • CE certified
  • the manual provides detailed guidelines for carrying out each test, results assessment and registration