Table 2: Coefficient A and B in Eq. [2] and recovery coefficient (RC) of SPECT images for OSEM without spatial resolution correction.
|
Collimator |
A |
B (mm) |
RC (%) |
|
LEHR-1 |
0.047 |
2.5 |
64.3 |
|
LEHR-2 |
0.039 |
3.3 |
66.3 |
|
LEHR-3 |
0.044 |
2.8 |
65.7 |
|
LEHR-4 |
0.041 |
3.5 |
67.5 |
|
LEHR-5 |
0.036 |
3.2 |
69.0 |
|
LEHR-6 |
0.054 |
2.7 |
65.1 |
|
LEGP-1 |
0.043 |
3.4 |
61.9 |
|
LEGP-2 |
0.056 |
3.4 |
61.0 |
|
LEGP-3 |
0.057 |
4.4 |
55.0 |
|
LEGP-4 |
0.062 |
5.1 |
51.3 |
|
LEGP-5 |
0.071 |
5.2 |
46.9 |
|
MEGP-1 |
0.042 |
3.8 |
63.8 |
|
MEGP-2 |
0.047 |
3.6 |
66.7 |
|
MEGP-3 |
0.069 |
2.3 |
61.3 |