| 摘要 |
In an exemplary embodiment, a measuring arrangement comprises a radiation source emitting a radiation beam which penetrates the body layer to be examined, and a radiation receiver which supplies electrical output signals corresponding to the radiation intensity measured, a computer being connected with the radiation receiver for computing from the output signals of the radiation receiver the attenuation values of specific image points of the body layer. There is a collimator with a collimator grid forming a shielding compartment for each detector. Each detector is arranged in its collimator grid compartment and can be secured to a plate forming part of the grid, the plate being removably inserted in two parallel side portions forming the sides of each grid compartment. Furthermore, each plate with the detector secured thereto can project slightly beyond the radiation exit side of the side portions, so that a simple electrical connection to the detectors is possible.
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