Emission computed axial tomography. [Comparison of /sup 99m/Tc with. gamma. camera with /sup 68/Ga and ring of scintillation counters]

Computed transverse section emission tomography using /sup 99m/Tc with the Anger camera is compared to positron annihilation coincident detection using a ring of crystals and /sup 68/Ga. It is concluded that positron computed section imaging has a tenfold increase in sensitivity over multiple-view imaging with the gamma camera which gives multiple sections but requires camera or patient rotation.