A camera in which a large diameter scintillator is coupled to an array of photomultiplier tubes by fibre optics. X-ray imaging may also be achieved in multi-crystal cameras where many small crystals individually scintillate.
Source:
PAC, 1995, 67, 1745. 'Nomenclature, symbols, units and their usage in spectrochemical analysis-XI. Detection of radiation (IUPAC Recommendations 1995)' on page 1756 (https://doi.org/10.1351/pac199567101745)