The invention relates to a
scintillation crystal array detecting device, which comprises a
crystal array, M*N light guides, an
optical fiber splitter unit, an
optical fiber merging unit and an opticalfiber
signal reading unit, wherein the
crystal array comprises M*N crystals for generating
fluorescence photons, M represents the number of rows, and N represents the number of columns; each
light guide is connected with the surface of a crystal to collect and transmit the
fluorescence photons generated by the crystal; the
optical fiber splitter unit is used for splitting
fluorescence photons transmitted by each
light guide into two paths of optical fibers which are a row transmission optical
fiber and a column transmission optical
fiber to transmit the fluorescence photons; the optical fibermerging unit is used for fusing row transmission optical fibers corresponding to light guides connected with the same row of crystals into a row optical
fiber and fusing column transmission optical fibers corresponding to light guides connected with the same column of crystals into a column optical fiber; and the optical fiber
signal reading unit is connected with the row optical fibers and the column optical fibers to recognize the numbers of the rows in which the row optical fibers transmitting the fluorescence photons are and the numbers of the columns in which the column optical fibers transmitting the fluorescence photons are to further determine the position of
scintillation crystals and detect the total quantity and energy of received fluorescence photons. The device is reduced incost, volume and weight and has high
position resolution and fluorescence collection efficiency.