From: Effects of attenuation map accuracy on attenuation-corrected micro-SPECT images
Isotope | Quantitative error a | Changes induced by map inaccuracies (rotation, shift and/or μ change) with respect to references | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
0° | 0° | 0° | 0° | 0° | 0° | 15° | 0° | 0° | 15° | ||
1 mm X | 3 mm X | 1 mm Y | 3 mm Y | 1 mm Z | 3 mm Z | 0 mm | 0 mm | 0 mm | 3 mm X | ||
1.0 μ | 1.0 μ | 1.0 μ | 1.0 μ | 1.0 μ | 1.0 μ | 1.0 μ | 0.9 μ | 1.1 μ | 1.1 μ | ||
125I | 2.1 ± 6.5 | 1.5 ± 1.1 | 3.9 ± 3.1 | 1.6 ± 1.2 | 4.6 ± 3.3 | 0.9 ± 0.9 | 2.3 ± 1.9 | 2.1 ± 1.8 | 5.8 ± 1.7 | 6.1 ± 1.9 | 5.8 ± 5.4 |
201Tl | 3.3 ± 2.5 | 0.6 ± 0.6 | 1.7 ± 1.6 | 0.6 ± 0.4 | 1.5 ± 1.2 | 0.5 ± 0.5 | 1.2 ± 0.8 | 0.8 ± 0.8 | 3.2 ± 0.8 | 3.3 ± 0.9 | 4.4 ± 3.2 |
99mTc | 2.0 ± 2.5 | 0.6 ± 0.5 | 1.5 ± 1.4 | 0.4 ± 0.4 | 1.0 ± 1.0 | 0.5 ± 0.4 | 1.3 ± 1.2 | 0.5 ± 0.4 | 2.8 ± 0.6 | 2.9 ± 0.7 | 3.3 ± 2.2 |
111In | 2.0 ± 2.7 | 0.6 ± 0.4 | 1.6 ± 1.3 | 0.4 ± 0.3 | 1.2 ± 0.8 | 0.3 ± 0.4 | 0.8 ± 1.0 | 0.5 ± 0.8 | 2.7 ± 0.6 | 2.8 ± 0.6 | 3.9 ± 2.2 |