The Pro-CT phantom is used for carrying out acceptance and constancy tests of computed tomography systems according to IEC 61223-3-5 and the AAPM (American Association of Physicists
in Medicine) guidelines.

Phantom can be used to make following tests:

• artefacts, noise
• homogeneity
• spatial resolution (high contrast resolution)
• sensitivity (low contrast resolution)
• absorbed dose
• size dependence
• contrast scale
• slice thickness
• alignment
• linearity
• beamwidth

This phantom consists of five test modules placed on a regulated stand allowing accurate alignment on the CT table. Markings on modules provide further facilitation of the positioning process. There is no need to fill phantom with water, which can be very inconvenient, because all modules are filled with substance which density is similar to water.

Geometry module:

• diameter: 230mm
• thickness: 50mm
• contains two pairs of copper wire ramps that slope angle tangent is equal to 0.5. Thanks to such construction evaluation and calculation of the slice thickness is very quick and easier than with aluminium bar ramps with 45° slope
• middles of ramps intersect on the same plane allowing for very precise evaluation of the slice location
• contains four PMMA rods (ø 5mm) placed in vertexes of a square (sides 100mm long). Rods are place on a vertical and horizontal axis of the module. This allows to precisely evaluate the correctness of shape and geometry imaging
• module density is similar to water

Spatial / high contrast resolution module

• diameter: 230mm
• thickness: 30mm
• contains 11 concentrically placed aluminium elements for spatial resolution evaluation from 1 to 11 LP/cm
• contains optional steel rod (ø 0.2mm)
• made of acrylic

Low contrast module

• diameter: 230mm
• thickness: 40mm
• made of acrylic
• contains three groups of low-contrast objects. In each group there are rods, of the same density, 20mm in height and having diameter ranging from 2 to 15mm. Density difference between groups and surrounding material is 1, 2 and 3% exactly

Sensitometric / contras module

• diameter: 230mm
• thickness: 50mm
• contains 5 sensitometric samples shaped as rods (ø 25mm): acrylic, PTFE, polythene, polyamide  and air
• module density is similar to water

Homogenous module:
•    diameter: 230mm
•    thickness: 50mm
•    module density is similar to water

Product features:

• Complies with:
  • IEC 61223-3-5
  • AAPM guidelines
• CE certified
• manual provides detailed guidelines for carrying out each test, results assessment and registration