TABLE V.
Measured SNRs and Contrasts, at 2nd OSEM Iteration, Smoothed With a Hann Filter
| Orbit | Lesion Size | |||||
|---|---|---|---|---|---|---|
| 9.5 mm (0.43 ml) | 8 mm (0.26 ml) | 5 mm (0.06 ml) | ||||
| SNR | Contrast | SNR | Contrast | SNR | Contrast | |
|
Ideal low-noise case with high uptake: 935 ml Breast Only 10:1 activity concentration ratio, 12.1 μCi/ml in lesions, 16% EWin | ||||||
|
| ||||||
| central | distal | |||||
|
| ||||||
| TPB | – | – | 19.3 | 2.0 | 2.7 | 0.2 |
| CP2A | – | – | 26.6 | 1.9 | 4.9 | 0.2 |
| CPA | – | – | 17.3 | 1.4 | 3.9 | 0.2 |
| CLOVER | – | – | 23.2 | 1.4 | 7.9 | 0.3 |
| invCLOVER | – | – | 17.1 | 1.5 | 6.9 | 0.3 |
|
| ||||||
|
More realistic case simulating patient biology: 1060 ml Breast + Filled Torso, 6.1:1:12 activity concentration ratio, 2.0 μCi/ml in lesions, 8% EWin | ||||||
|
| ||||||
| central | distal | |||||
|
| ||||||
| TPB | 4.6 | 0.8 | 3.4 | 0.5 | – | – |
| CPA | 4.8 | 1.0 | 5.5 | 0.6 | – | – |
| CLOVER | 3.7 | 0.8 | 2.0 | 0.3 | – | – |
| invCLOVER | 6.3 | 1.2 | 1.2 | 0.2 | – | – |