Pro-CT Dose – 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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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).

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

Technical Data

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)