Fig. 6

Diagram depicting the dual-dependency relationship between myocardial signal, patient weight, and injected activity. The theoretical expected myocardial signal was computed using Eq. 2. Uncertainty derived from Eq. 2 leads to a constant relative uncertainty of 23% over the predicted myocardial signal. Applying a myocardial signal threshold of 22,000 counts (red line) means that patients with a body weight of < 100 kg will benefit from activity reduction