Deviation Between Semiquantitative Measures of OSEM- and FBP-Reconstructed Images
| Scans | Parameter | Value for: | Putamen-to-caudate ratio* | ||||
|---|---|---|---|---|---|---|---|
| Striatum | Caudate | Putamen | |||||
| Phantom (n = 11†) | Mean difference ± SD | 0.05 ± 0.17 | |||||
| Limits of agreement | −0.30 to +0.40 | ||||||
| Variation index ± SD (%) | 7.1 ± 5.3 | ||||||
| Patient (n = 50) | Mean difference ± SD | 0.00 ± 0.06 | 0.00 ± 0.09 | 0.00 ± 0.06 | 0.00 ± 0.04 | ||
| Limits of agreement | −0.12 to +0.12 | −0.19 to +0.19 | −0.12 to +0.12 | −0.08 to +0.08 | |||
| Variation index ± SD (%) | 3.3 ± 2.7 | 4.3 ± 3.1 | 4.5 ± 3.5 | 5.1 ± 4.1 | |||