|
Tracer
|
HFa
|
Alternate permutationb
|
Reconstructionc
|
Image sized
|
VOI volume changee
|
Cut-off limitf
|
|---|
| | |
Coronal
|
Sagittal
|
FBP
|
256 × 256
|
≈ +20 %
|
≈ −20 %
|
→2 mm
|
|---|
|
AnxA5
|
0.1342
|
0.0545
|
0.0930
|
0.1004
|
0.0827
|
0.1620
|
0.1363
|
0.0287
|
|
[18F]FDG
|
0.1006
|
0.0377
|
0.0677
|
0.0869
|
0.0376
|
0.1334
|
0.0723
|
0.0157
|
|
Ratiog
|
1.334
|
1.446
|
1.374
|
1.155
|
2.199
|
1.214
|
1.885
|
1.828
|
|
AnxA5
|
0.3570
|
0.0892
|
0.1328
|
0.2881
|
0.1036
|
0.3354
|
0.1976
|
0.2351
|
|
[18F]FDG
|
0.3101
|
0.0751
|
0.1061
|
0.1911
|
0.0805
|
0.2710
|
0.1115
|
0.1480
|
|
Ratiog
|
1.151
|
1.188
|
1.252
|
1.508
|
1.287
|
1.238
|
1.772
|
1.589
|
|
AnxA5
|
0.2558
|
0.0724
|
0.0919
|
0.1694
|
0.0825
|
0.2856
|
0.2708
|
0.0944
|
|
[18F]FDG
|
0.1147
|
0.0310
|
0.0442
|
0.0982
|
0.0389
|
0.1879
|
0.0783
|
0.0209
|
|
Ratiog
|
2.230
|
2.335
|
2.079
|
1.725
|
2.121
|
1.520
|
3.458
|
4.518
|
|
AnxA5
|
0.3036
|
0.0701
|
0.0940
|
0.2870
|
0.0825
|
0.3701
|
0.2169
|
0.0966
|
|
[18F]FDG
|
0.1199
|
0.0255
|
0.0330
|
0.0955
|
0.0321
|
0.0991
|
0.0818
|
0.0292
|
|
Ratiog
|
2.532
|
2.749
|
2.848
|
3.005
|
2.578
|
3.735
|
2.652
|
3.308
|
-
aHF for VOIs drawn as in “Methods” (“VOI definition” section), axial (Z-axis) planes, OSEM2D reconstruction, 512 × 512 pixels and the lower cut-off for resolution at centre of field-of-view (FOV) at 1.2 mm
-
bPermutation for the planes in the VOI to be along the X- (coronal) or Y- (sagittal) axis instead of the Z-axis
-
cFiltered back projection reconstruction was used instead of OSEM2D
-
dThe pixel size was dubbled
-
eThe size of the VOI used in the HF calculations was increased or decreased by 20 %
-
fLower cut-off limit changed from resolution at CFOV (1.2 mm) to that toward the outer edge of FOV (2.0 mm)
-
gRatio = HFAnxA5/HFFDG
