This medical imaging X-ray phantom allows for measurement of the Dose Index (DI) of the CT imaging system. The phantom consists of 2 large PMMA cylinders representing the head and body. The head is able to nest inside the body. An additional phantom with a Paediatric head which nests into the adult head is also available.

It allows for evaluation of:

  • Dose Index (DI)
  • CTDI100 (centre)
  • CTDI100 (peripheral)
  • CTDIfree air
  • CTDIvol (weighted CTDIw)
  • CTDIw (weighted CTDI100)


  • The head has a 160mm diameter
  • The body has a 320mm diameter
  • Each cylinder is 145mm long
  • Holes in each cylinder for 8, 10, 13mm diameter radiation detectors
  • PMMA plugs are also provided for plugging the holes when not in use
  • Alignment markers

Comes with:

  • Detailed user manual
  • Robust carrying case for easy transport

Complies with:

  • IEC 61223-3-5
  • IEC 61223-3-6
  • IEC 60601-2-44

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