Fig. 2.

Fast Tl-201 stress/Tc-99m rest protocol for adenosine (top) and exercise (bottom) myocardial perfusion SPECT protocol. At peak stress, patients were injected with Tl-201. After a 5-minute post-stress monitoring period, supine and semi-upright (sitting) acquisitions were performed sequentially. Subsequently, Tc-99m sestamibi (mibi) or tetrofosmin (tetro) was injected, and a single 4-minute sitting rest acquisition was performed. (Modified from Berman et al. [17•])