Pro-CT AAPM

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).

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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

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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

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Bone insert

• PTFE annulus
• wall thickness 6.4 mm, 70 mm long
• fits over all inserts to harden the beam

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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

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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

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Slice thickness insert

• three aluminum strips, 0.5 mm thick and 25 mm wide angled at 45°, positioned at the centre and aligned vertically

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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)

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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

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Accessories

• filling tubes
• optional heavy duty carrying case (04-502)

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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