Optimisation of Simultaneous Tl-201/Tc-99m Dual Isotope Reconstruction with Monte-Carlo-Based Scatter Correction

Table 5

The contrast values for the Tl-201 optimization. In this table myocardium versus defect and myocardium versus left ventricle (LV) contrasts are presented for the Tl-201 reconstruction optimisation. The contrast values are calculated for Phantom 3 for the anterior defect.

Number of simulated photons	Number of down-scatter simulated photons	Number of scatter update iterations	Myocardium versus defect contrast	Myocardium versus LV contrast
10^5	10^6	2	0.68	0.89
10^5	10^6	10	0.67	0.89
10^6	10^6	2	0.67	0.89
10^6	10^6	10	0.68	0.89