When compared to non-time of flight (ToF) scanners, ToF scanners

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The distinct advantage of ToF is that there is not a full LOR across the FOV of the scanner but rather only a short line in which the annihilation event took place.The effect on the signal-to-noise ratio of a small lesion is the same effect as acquiring at least 2.5 times the number of events to improve lesion detection.ToF scanners thus can produce high-quality images using a slightly shorter acquisition time.In ToF imaging, there is image improvement as the likelihood of detecting random events is reduced.

When Compared to Non-Time of Flight (ToF) Scanners, ToF Scanners