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Translations to align attenuation maps to SPECT image (mean ± SD)
| Attenuation map |
Direction |
||
|---|---|---|---|
| Right/left (mm) | Up/down (mm) | Cephalad/caudal (mm) | |
| TCT |
0.0 ± 0.0 |
0.0 ± 0.0 |
2.4 ± 2.1 |
| CT at MID |
2.8 ± 7.1 |
−2.6 ± 3.9 |
11.7 ± 8.0 |
| CT at INS |
4.5 ± 6.0 |
−4.7 ± 5.4 |
6.2 ± 7.3 |
| CT at EXP | −1.5 ± 3.5 | 0.0 ± 5.1 | 19.9 ± 5.8 |
CT, computed tomography; EXP, end-expiration; INS, end-inspiration; MID, midpoint; TCT, transmission computed tomography.
