Simultaneous Tc-99m and I-123 dual-radionuclide imaging with a solid-state detector-based brain-SPECT system and energy-based scatter correction

EJNMMI Physics

Table 4 Results of uniform phantom study

Radionuclide	Acquisition	Evaluation indicator	No correction	Corrected without DR	Corrected using DR	DR/no DR
Tc-99m	Single	ROI value	260.5 ± 12.9	183.7 ± 17.8	204.2 ± 19.4	1.11
	Dual	ROI value	342.3 ± 16.9	188.2 ± 16.6	214.9 ± 18.6	1.14
	Dual vs. single	PD (%)	27.1 ± 3.2	4.3 ± 3.2	5.7 ± 4.0	1.32
I-123	Dual	ROI value	111.2 ± 8.1	58.2 ± 8.0	75.3 ± 9.4	1.29

Values are mean ± standard deviation
PD percentage difference for each ROI value between single and dual acquisitions