TOR 18FG fluoroscopy phantom is a routine test object designed to be used quickly and easily on a regular basis (e.g. weekly/monthly) to provide an ongoing check of imaging performance, particularly those aspects which are most liable to deterioration. After an initial grey-scale check, image quality is measured simply by counting the number of details detected and the number of bar-patterns resolved in the image. An ongoing record of these numbers will reveal any trend towards deterioration in imaging performance.

Used for fluoroscopy and fluorography, enables the following checks to be made:

  • Monitor brightness and contrast level adjustment (highlight and lowlight details)
  • Resolution limit (0.5 to 5.0 LP/mm)
  • Low-contrast large-detail detectability (18 details, 8mm diameter)
  • Circular Geometry (Lead Circle)

Small F.O.V. TOR 18FG

We can supply smaller diameter field of view versions of TOR 18FG on request, with the same features as the standard phantom (ideal for mini C-arms).

Fluoro 4

Leeds Test Objects′ FLUORO-4 phantom is designed to be used to check the image quality performance of digital and conventional fluoroscopy x-ray systems. These tests should be carried out at acceptance to establish a baseline, and on a routine basis, keeping an on-going record of the test results, which will indicate any deterioration in performance.

FLUORO-4 features the following test details:

  • Tube axis direction markings
  • Limiting spatial resolution (0.6 − 5.0 LP/mm)
  • Low contrast resolution details (8 x 10mm diameter details, depths 0.4 − 4.0 mm)
  • Dynamic range (17 different thickness Cu steps each with a central 4.0mm diameter detail, depth 2.5 mm)
  • kV test-area (Yb 0.78mm)
  • Unstructured inner area (centre-marked)
  • Radiopaque numbers indicating dynamic range steps

FLUORO-4 should be used with either PMMA/Cu or Al attenuator plates (available separately).

The phantom is supplied in a soft protective carry bag.

Available in 2 Sizes:

FLUORO-4 (200x200mm)

FLUORO-4-L (300x300mm)


Conforms to standards:

  • DIN 6868-4
  • DIN 6868-150