From: Effects of attenuation map accuracy on attenuation-corrected micro-SPECT images
Isotope | VOI | Quantitative error | Changes induced by map inaccuracies (rotation, shift and/or μ change) with respect to references | |||||||
---|---|---|---|---|---|---|---|---|---|---|
0° | 0° | 0° | 0° | 15° | 0° | 0° | 15° | |||
1 mm X | 3 mm X | 1 mm Y | 3 mm Y | 0 mm | 0 mm | 0 mm | 3 mm X | |||
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 | 1 | −20.4 | 0.1 | 0.4 | −0.5 | −4.0 | 0.0 | −4.9 | 5.2 | 5.3 |
2 | −11.8 | 0.7 | 1.1 | −0.2 | −1.0 | −0.2 | −4.8 | 5.0 | 6.2 | |
3 | −7.9 | −1.1 | −4.0 | −1.5 | −4.5 | −1.4 | −4.2 | 4.3 | −0.8 | |
201Tl | 1 | −5.8 | 0.0 | 0.1 | −0.1 | −1.5 | 0.0 | −2.6 | 2.7 | 2.7 |
2 | 6.1 | −0.4 | −1.4 | 0.0 | −0.3 | −0.1 | −2.5 | 2.6 | 3.0 | |
3 | 4.4 | 0.2 | −0.3 | 0.6 | 1.4 | −0.7 | −2.3 | 2.3 | 0.0 | |
99mTc | 1 | −2.0 | 0.1 | 0.2 | −0.2 | −1.7 | 0.0 | −2.2 | 2.2 | 2.1 |
2 | 6.1 | −0.3 | −1.1 | −0.1 | −0.3 | −0.1 | −2.1 | 2.2 | 2.4 | |
3 | −8.3 | 0.4 | −0.2 | 0.5 | 1.3 | −0.2 | −1.8 | 1.9 | 0.2 | |
111In | 1 | −4.7 | 0.0 | 0.1 | −0.2 | −1.4 | 0.0 | −2.1 | 2.1 | 2.2 |
2 | −3.5 | −0.4 | −1.2 | 0.0 | −0.3 | −0.1 | −2.0 | 2.0 | 2.5 | |
3 | 3.2 | 0.0 | −1.1 | 0.4 | 0.9 | −0.9 | −1.9 | 1.9 | 0.6 |