Table 1 SAFIR-I spatial resolution values reported in radial, tangential and axial direction in [\(\hbox {mm}\)] after reconstruction with an FBP3DRP algorithm
From: SAFIR-I: first NEMA NU 4-2008-based performance characterization
Reconstructed image pixel size [mm\(^2\)]: 0.55\(\times\)0.55 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Slice thickness [mm]: 1.1 | ||||||||||
At axial center | ||||||||||
Radial offset | \(0\,\hbox {mm}\) | \(5\,\hbox {mm}\) | \(10\,\hbox {mm}\) | \(15\,\hbox {mm}\) | \(25\,\hbox {mm}\) | |||||
FWHM | FWTM | FWHM | FWTM | FWHM | FWTM | FWHM | FWTM | FWHM | FWTM | |
Radial | 2.02 | 3.59 | 2.76 | 5.53 | 3.20 | 7.22 | 3.52 | 12.21 | 3.45 | 13.42 |
Tangential | 2.00 | 3.92 | 1.97 | 3.88 | 2.24 | 4.25 | 2.94 | 6.36 | 3.15 | 5.64 |
Axial | 2.79 | 5.13 | 2.92 | 5.41 | 2.91 | 5.39 | 2.95 | 5.47 | 2.96 | 5.49 |
At 1/4 axial FOV from center | ||||||||||
Radial | 1.34 | 2.94 | 2.58 | 5.36 | 3.66 | 7.41 | 3.47 | 12.36 | 3.40 | 13.64 |
Tangential | 1.53 | 3.51 | 2.08 | 4.34 | 2.33 | 4.23 | 2.74 | 5.74 | 3.17 | 5.98 |
Axial | 2.77 | 5.03 | 2.93 | 5.47 | 2.94 | 5.44 | 2.96 | 5.48 | 2.98 | 5.53 |