Modular high spatial resolution scintigraphic device with multiple independent photomultipliers and with extensible visualisation area

摘要

A scintigraphic device, comprising a collimator, a scintillation crystal structure, a plurality of photomultipliers, electronic circuits for the determination of the position co-ordinates (XY) and energy of the event and their amplification for their subsequent transfer to an electronic processor, wherein photomultipliers (3₁, 3₂, 3₃, 3_n) are positioned mutually adjacent, each provided with its own independent electronic circuits (12₁, 12₂, 12₃, 12_n), and a circuit (13) for interrogating the respective synchronism signals drawn from the respective electronic circuits (12) determines the signal indicating the photomultiplier (13) that detected the event and enables only a corresponding analogue switch (14) to transfer the signals carrying the position co-ordinates of the event from the enabled electronic components (12) to an analog to digital converter (A/D).