Mesh molds for emission imaging devices, detectors and emission imaging devices

Abstract

The present invention provides a grid mold for an emission imaging device, a detector and an emission imaging device. The grid mold includes: a housing; a plurality of transverse walls located in the housing and extending parallel to each other along the lateral direction of the housing; and a plurality of longitudinal walls located in the housing and extending parallel to each other along the lateral direction of the housing Extending longitudinally, wherein a plurality of transverse walls and a plurality of longitudinal walls divide the lower space in the housing into a plurality of grid grooves arranged in a matrix, and a plurality of transverse walls and a plurality of longitudinal walls extend from the outer periphery of the housing to The center of the housing has a gradually decreasing height. The grid mold can accurately control the projection distribution of the visible photon group generated by the annihilation of high-energy photons by accurately determining the height of the transverse wall and the longitudinal wall, thereby achieving the best crystal decoding effect. The grid mold can be fabricated by assembling transverse walls and longitudinal walls (such as thin slices), which can achieve precise control of its surface properties and shape dimensions, and significantly improve the performance of the detector.

Description

technical field [0001] The present invention relates to an emission imaging system, in particular to a grid mold for a detector of an emission imaging device, a detector with the grid mold, and an emission imaging device with the detector. Background technique [0002] Emission imaging devices, including positron emission imaging devices, have been used for medical diagnosis. Taking positron emission imaging equipment as an example, it uses the phenomenon that the positrons produced by the decay of positron isotopes and the negative electrons in the human body have an annihilation effect, leading to the injection of compounds labeled with positron isotopes into the human body, using the method of composite detection , use the detector to detect the gamma photons produced by the annihilation effect, obtain the distribution information of the isotopes in the human body, and reconstruct and combine operations by the computer, so as to obtain the three-dimensional tomographic im...

AI Technical Summary

Problems solved by technology

As for the depth of the groove 121, as mentioned above, in order to obtain the best crystal decoding effect, there is a certain accuracy requirement (for example, 200 micron precision) for the depth of the groove 121, which is difficult to meet with traditional cutting techniques.

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