X-Ray field set – Visi-X

Radiation/Light field analyzer

The Visi-X measures the alignment between radiation and light field and is a proven concept in Quality Control and Service. It is a cassette shaped instrument for checking the radiation and light field coincidence for X-ray equipment.

It can also be used for checking the centering of the bucky tray.

Instant visualization

The Visi-X is based on an after-glowing phosphorus screen. Simply darken the X-ray room and place your Visi-X under the X-ray tube. Adjust the light field, and make your exposure. The radiation field will immediately be visualized by the glow of the special phosphor compound. Misalignment down to ±1 mm will be clearly shown on the built-in scales (afterglow will last for several minutes.) No film is needed; therefore, no time is lost going back and forth to the film developer, if there is one.

Protective daylight filter

The phosphor is non-radioactive and is covered by perspex plates. A daylight filter protects the phosphor from accidental excitation from light sources. The lifetime expectancy of the phosphor is not affected by light or X-rays having an energy within the recommended range.

Included: transport case.

Art. No: 9705001-00


  • Emission color
  • Operating temperature
    15 - 45 °C
  • Dimensions
    320 x 276 x 11 mm (without daylight filter)
  • Equivalent cassette size
    24 x 30 cm
  • Weight
    1.4 kg
  • Other
    Daylight filter, magnetic lock, ruler, documentation chart
  • Option
    Carrying case
  • Field positioning inaccuracy
    < ±0.5 mm
  • Centering inaccuracy
    < ±0.5 mm
  • Scale range
  • Circular fields
    5-6 cm diameter
  • Square fields
    5 x 5, 10 x 10, 15 x 15 and 20 x 20 cm
  • Indicated deviation
    ±10 mm
  • Scale inaccuracy
    ±0.1 mm
  • Recommended output
    130 µGy/mAs at 100 kVp and 75 cm S.I.D.
  • Usable energy range
    15 - 200 keV

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Selected partners

PTB is Germany's National Metrology Institute and handles scientific and technical service tasks. With metrology as the PTB's core competence, the organisation's goal is to measure with the highest accuracy and reliability. PTB represents progress and reliability in metrology for the benefit of society, trade and industry, and science.
The ANSI National Accreditation Board (ANAB) is the largest multi-disciplinary accreditation body in North America. ANAB accredits the full spectrum of conformity assessment bodies, including calibration, testing and inspection.
The International Electrotechnical Commission (IEC) is the world’s leading organization that prepares and publishes International Standards for all electrical, electronic and related technologies.
AAPM is a scientific and professional organization, composed of more than 8000 scientists, whose primary goal is the identification and implementation of improvements in patient safety for the medical use of radiation in imaging and radiation therapy.