Zeiss METROTOM 1500 G3, Operating Instructions Manual, Page: 119 / 120

Attachment
7
Information on computed tomography
61211-8140502 METROTOM 1500 G3 1.4
7
1 Considerable blurring in the case of a small distance between the X-ray source
and the workpiece
2 Slight blurring in the case of a large distance between the X-ray source and the
workpiece
Scattered radiation
The attenuation of X-ray radiation is always a coupled process of ab-
sorption and scattering.
1 No absorption: 100% of the X-ray beams hit the detector
2 Absorption: 50% of the X-ray beams are absorbed by the workpiece; the re-
maining 50% hit the detector
3 Absorption and scatter: X-ray radiation with workpiece: 50% of the X-ray beams
are absorbed by the workpiece; 20% of the X-ray beams are deflected and scat-
tered in different directions: the remaining 30% hit the detector
NOTE
Scattered radiation generated in the workpiece or in the detector itself
is relatively undirected. If it is detected, the contrast gets worse. The
percentage of the scattered radiation increases with increasing X-ray
energy (keV).