Table 2 Attenuation properties of the tissue substitutes as expected by the MRACs of the system (μdesired) and measured using a PET transmission scan (μmeasured) and CT(μCT)
Tissue | μdesired[cm−1] | Substitute | μmeasured[cm−1] | μCT[cm−1] |
|---|---|---|---|---|
Bone | 0.151 cm −1 | Gypsum plaster | 0.1501 ± 0.0013 | 0.1492 ± 0.0006 |
Brain | 0.1 cm −1 | Agarose gel | 0.0938 ± 0.0004 | 0.0963 ± 0.0003 |
Fat | 0.0854 cm −1 | Silicone | 0.0846 ± 0.0015 | 0.1030 ± 0.0010 |