Table 4 SPECT reconstructed spatial resolution without scatter
Reporting parameter | Measurement | Simulation | |||
|---|---|---|---|---|---|
Collimator | MPH | SPH | SPH | SPH | SPH |
Reconstruction algorithm | MLEM | MLEM | FBP | MLEM | FBP |
Central transaxial FWHM (x, y) (mm) | \(1.29\pm 0.04\) | \(1.45\pm 0.01\) | \(2.26\pm 0.01\) | \(1.50\pm 0.01\) | \(2.26\pm 0.01\) |
Central axial FWHM (z) (mm) | \(1.56\pm 0.01\) | \(1.58\pm 0.01\) | \(2.45\pm 0.01\) | \(1.31\pm 0.01\) | \(2.26\pm 0.01\) |
Peripheral radial FWHM (x) (mm) | \(1.13\pm 0.08\) | \(1.25\pm 0.06\) | \(2.03\pm 0.10\) | \(1.30\pm 0.09\) | \(2.11\pm 0.25\) |
Peripheral tangential FWHM (y) (mm) | \(0.91\pm 0.05\) | \(1.23\pm 0.11\) | \(1.94\pm 0.14\) | \(1.26\pm 0.13\) | \(1.93\pm 0.10\) |
Peripheral axial FWHM (z) (mm) | \(1.24\pm 0.04\) | \(1.45\pm 0.16\) | \(2.70\pm 0.04\) | \(1.12\pm 0.06\) | \(2.48\pm 0.05\) |
Average 3D FWHM (mm) | \(1.19\pm 0.20\) | \(1.37\pm 0.15\) | \(2.26\pm 0.30\) | \(1.30\pm 0.15\) | \(2.20\pm 0.23\) |