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The depth of interaction in pixelated CdZnTe and HgI2 detectors is determined using either the cathode-to-anode signal ratio (CAR) or drift time information. The CAR can be used if a ??-ray interacts only once in the detector. The drift time must be used if the ??-ray interacts over multiple pixels. The accuracy of these reconstruction techniques is evaluated using a collimated fan beam of ??-rays...
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