Gamma-ray imaging makes giant leap with semiconductor-based detectors

Research to enhance semiconductor-based (CdZnTe) gamma-ray imaging modules has finally untangled a major conundrum: how to increase sensitivity without lowering spatial resolution (and vice-versa).
Researchers from CEA-Leti and the CEA Physical Science Division (DSM) successfully improved both sensitivity and image definition using a low-noise read circuit and special signal processing. The module, which is standard-sized and keeps a standard pixel pitch of 2.5 mm, delivers spatial resolution equivalent to 0.3-mm pixels.
This advance could be extremely useful in cardiac imaging, scintimammography, and radioactive source detection. Advanced-stage negotiations are underway with several manufacturers in France and other countries.

Contact: guillaume.montemont@cea.fr

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