Project Description

Pro-Dent CT mk II – versatile phantom for dental professionals

The new Pro-Dent CT mk II phantom is a versatile quality control tool of dental Cone-Beam CT, Dental Volume Tomography (DVT) and other 3D imaging devices according to the Radiation Protection Report no 172 by SEDENTEXCT.

The phantom consists of a main PMMA cylinder that houses modules with different test objects. Thanks to this design, you can perform tests with devices with a small FOV at different positions in the 160 mm phantom.

Technical data (can be modified to customer specifications)


  • diameter: 160 mm
  • made of PMMA (1.19 g/cm³)
  • total length: 170 mm
  • positioning aids on the outside surface of the phantom

Noise / uniformity section

  • uniform PMMA part of the phantom

5 layer modules section with modules containing

  • Linear Spread Function (LSF) PTFE / PMMA interface
  • Point Spread Function (PSF) – 0.25 mm tungsten steel wire in air
  • XY high contrast resolution (aluminum/polymer) – 1.0, 1.7, 2.0, 2.5, 2.8, 4.0, 5.0 LP/mm
  • Z high contrast resolution (aluminum/polymer) – 1.0, 1.7, 2.0, 2.5, 2.8, 4.0, 5.0 LP/mm
  • 6 low-contrast groups of 1.0, 2.0, 3.0, 4.0, 5.0, 6.0 mm rods made of: aluminum, PTFE, POM-C (delrin), PE-300, air and water emulating epoxy; background made of PMMA
  • 10 mm rods made of aluminum, PTFE, POM-C (delrin), PE-300, air and water emulating epoxy suspended in PMMA – pixel intensity / HU values samples
  • stacked 20 mm diameter contrast-to-noise discs made of aluminum, PTFE, POM-C (delrin), PE-300 and air suspended in PMMA
  • three 5.0 mm diameter titanium rods embedded in PMMA – beam hardening artefacts

Slice geometry section

  • 20 mm thick module with two pairs of aluminum ramps and empty rods in vertexes of a square for detailed evaluation of slice thickness and geometry and laser position verification

Geometric distortion section

  • an array of 2.0 mm diameter, 3.0 mm long holes uniformly pitched at 10.0 mm intervals


  • test stand with spirit level for accurate placing of the phantom in the test position
  • folding base for test stand positioning on the X-ray unit’s chair
  • convenient, portable case for storing and transporting the phantom
  • optional additional homogeneity disc

Product features:
  • complies with:
    – Radiation Protection no 172 report by the SEDENTEXCT
    – IEC 61223-3-4 and IEC 61223-3-5
  • CE certified
  • the manual provides detailed guidelines for carrying out each test, results assessment and registration
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