SedentexCTIQ consists of a PMMA cylinder (160 mm diameter) with recesses to house test inserts (fig. 1). Within the body of the cylinder are features for the following tests:

  • Noise/Uniformity
    The lower section of the phantom is uniform PMMA (density 1.20 +/- 1.00%)
  • Geometric Distortion
    An array of 2.0 mm diameter, 3.0 mm deep Air gaps are uniformally pitched at 10.0mm intervals through one slice of the cylinder

Test Inserts are included to perform the following measurements:

  • Spatial Resolution
    • Line Spread Function (LSF) – PMMA/PTFE interface (fig. 2)
    • Point Spread Function (PSF) – 0.25mm diameter stainless steel wire suspended in air (fig. 3)
    • LP/mm – alternating Aluminium/polymer (XY)
      (1.0, 1.7, 2.0, 2.5, 2.8, 4.0 and 5.0 LP/mm) (fig. 4)
    • LP/mm – alternating Aluminium/polymer (Z)
      (1.0, 1.7, 2.0, 2.5, 2.8, 4.0 and 5.0 LP/mm) (fig. 5)
  • Contrast Resolution (fig. 6)
    1.0, 2.0, 3.0, 4.0, 5.0 mm diameter Al, PTFE, Delrin, LDPE and Air rods suspended in PMMA
  • Pixel intensity (fig. 7)
    10.0 mm diameter Al, PTFE, Delrin, LDPE and Air rods suspended in PMMA
  • Beam Hardening Artefacts (fig. 8)
    A line of three 5.0 mm diameter rods of Ti suspended in PMMA
  • Blank PMMA insert (fig. 9)
  • Automatic Scoring Software (available separately)
    See Radia software for more details

Specification Sheet

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