Fig. 3From: The future of hybrid imaging—part 1: hybrid imaging technologies and SPECT/CTSelected state-of-the-art SPECT/CT systems. Since the introduction of the first commercial SPECT/CT system employing a dual-head SPECT and a low-dose, single-slice CT-like transmission source in 1999, SPECT/CT has advanced towards a hardware combination of multiple SPECT detector heads and spiral CT systemsBack to article page