|
Imaging technique
|
Number of sheets through which iron-based inks can be recorded
|
Number of sheets through which carbon-based inks can be recorded
|
Typical image acquisition time
|
Typical image processing time
|
Pixel/voxel size
|
Field of view
|
|---|
|
Multispectral imaging
|
2
|
2
|
20 min
|
~ 1 h
|
24 μm
|
30 × 30 cm
|
|
Transillumination
|
> 3
|
> 3
|
20 min
|
~ 1 h
|
24 μm
|
10 × 15 cm
|
|
Optical coherence tomography
|
0
|
0
|
< 10 s
|
2 min
|
2 μm
|
10 mm × 2 mm (in depth)
|
|
X-ray micro tomography
|
> 3
|
Not visible
|
18 h
|
< 2 h
|
38 μm
|
5 × 10 cm
|
|
Portable X-ray fluorescence spectroscopy
|
6
|
Not visible
|
30 s
|
None
|
~ 1 cm
|
1 cm
|
|
X-ray fluorescence imaging
|
> 3
|
Not visible
|
10 s
|
1 min
|
100 μm
|
10 × 15 cm
|
|
X-ray phase contrast imaging
|
> 3
|
Not visible
|
10 min
|
1 min
|
100 μm
|
2 × 5 cm
|
|
Terahertz
|
1
|
3
|
0.1 s/pixel
|
10–20 s
|
100 μm
|
4 × 4 cm
|
- Note that for most of these parameters can be varied depending on the application, so these figures should be seen as indicative only
