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Research

Feb 16, 2010

PET with clustered pinholes

The performance of small-animal SPECT has improved vastly over the past few decades, with state-of the-art systems containing focusing multi-pinhole collimators now delivering sub-half-millimetre image resolution. While this resolution surpasses that of small-animal PET (approx 1 mm), current SPECT systems are not suitable for imaging the high-energy annihilation photons produced by PET tracers, due to severe photon penetration through the pinhole edges.

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