NuVISION-MAX

NuVISION-MAX

Portable spectrometric gamma imaging system

The NuVISION-MAX is the high efficiency version of our gamma cameras. As the standard NuVISION, the camera combines several functions in one device. It can localize hotspots from a distance, identify the
corresponding radionuclides and estimate the doserate contribution of every hotspot seperately. The high efficiency performance reduces the acquisition time and allows to image hot spots of lower activities
in particular at high energies. The NuVISION-MAX incorporates a large volume CZT-detectorsystem, twice as large as the regular NuVISION. Its unique design allows both coded mask AND Compton
imaging. This combination provides a full 360° FOV (Compton) while having a great 3.5° resolution (coded mask). The high processing speed allows to perform real-time imaging and tracking mobile sources.

NuVISION-MAX is the high efficiency version of NUVIATech Instruments’ gamma imagers. Its large CZT detector system allows to minimize acquisition time in particular at high energies. The 19.2 cm³ CZT detector allows to reach unprecendented energy resolution of 1.5% at 662 keV. Each gamma event is localised on a 128 × 128 pixel array. The resulting spectral image is reconstructed in real time to identify isotopes and localise activity.

Angular Resolution:

• 3° for a 45 degree field of view using the coded aperture
• 15° for a 360 degree field of view using the Compton imaging

The system is sensitive enough to localize a 250 nSv/h Co-60 source in natural background in less than 60 seconds. The strength of the system is its spectrometric capability for the detection of low energy peaks from isotopes which may otherwise be masked by other sources, legitimate or not combined with high detection efficiencies at high energies. The system is able to localise the source of interest and isolate it from the background whether it is a NORM, medical or industrial source. With a weight of only 3.3 kg the NuVISION can be used as an handheld device in dynamic mode.