99mTc Percentage Bias in 12 Normal and 12 Pathologic Simulated Studies for Several Brain Structures After Scatter, Cross-Talk, DCR, and Attenuation Corrections
| Simulated study | Cerebellum | Corpus callosum | Frontal cortex | Parietal cortex | Occipital cortex | Caudate nucleus | Putamen |
|---|---|---|---|---|---|---|---|
| Normal | |||||||
| AW + OSEM | 20.3 ± 5.2 | 59.9 ± 8.8 | 21.6 ± 4.0 | 18.1 ± 4.5 | 21.3 ± 3.9 | 39.5 ± 10.3 | 35.6 ± 8.3 |
| ANN + OSEM | 1.4 ± 2.2 | −6.2 ± 1.5 | −6.5 ± 1.2 | −9.7 ± 1.3 | −11.4 ± 1.6 | −4.3 ± 1.8 | −5.0 ± 2.8 |
| Primary + OSEM | −1.0 ± 0.8 | 3.1 ± 0.7 | −2.9 ± 0.6 | −5.5 ± 0.8 | −7.3 ± 0.9 | 0.8 ± 0.9 | −3.5 ± 0.8 |
| Pathologic | |||||||
| AW + OSEM | 24.7 ± 5.5 | 54.4 ± 9.5 | 53.1 ± 8.0 | 55.7 ± 7.4 | 18.2 ± 4.2 | 38.2 ± 11.2 | 34.5 ± 9.0 |
| ANN + OSEM | 1.7 ± 0.9 | −5.1 ± 0.8 | 5.9 ± 1.6 | 8.6 ± 1.6 | −10.1 ± 1.4 | −2.1 ± 1.2 | −5.3 ± 1.1 |
| Primary + OSEM | −1.0 ± 1.0 | −3.8 ± 1.1 | 2.2 ± 0.7 | 7.1 ± 0.5 | −8.4 ± 0.6 | −2.4 ± 0.6 | −3.8 ± 0.3 |