Research Article

Feasibility Evaluation of Radioimmunoguided Surgery of Breast Cancer

Figure 4

The effect of increasing the lower energy-window threshold on the MDTV for 111In, 9 9 m T c , and 131I. The T:B was fixed at 5. 0.0 cm collimation and a background activity concentration of 5 kBq/ml were used during these calculations to isolate the effect of increasing energy-window threshold on the MDTV. The abscissa of the plot corresponds to the fraction of the energy range that is above the energy-window threshold (0 corresponds to the threshold at  3 𝜎 above the photo peak and 1 corresponds to the threshold at the Compton backscatter peak).
545034.fig.004