Myocardial Flow Assessment After Heart Transplantation Using Dynamic Cadmium-Zinc-Telluride Single-Photon Emission Computed Tomography With 201 Tl and 99m Tc Tracers and Validated by 13 N-NH 3 Positron Emission Tomography.

This small study suggests that CZT SPECT using Tl and Tc tracers showed comparable MBF and MFR, and the results correlated well with those of N-NH PET. Hence, CZT SPECT with Tl or Tc tracers can be used to detect moderate-to-severe CAV in patients with prior heart transplantation. However, validation using larger studies is warranted.