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Hidden flags
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This table summarizes the 'hidden flags' in the
CHANGE data. The negative sign of an
index value is used here as a flag and, in some cases, can also be used as the actual
value. A negative value of the following indices indicates:
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1
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Call to the isotop routine for the
emission photons. The default routine linked
is a sepctra routine that read information about energy and abundance from
a text file. The default name for the file is spectra.isd. However, if there is a
file that has the same base name as the input SMC file but with an extension
*.isd then this file will be use. The user can also speify the name using the
switch /IF:
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14
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Simulation of a non-homogeneous phantom. Depending on the value different
types of voxel-based phantoms are used.
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15
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Call to the source routine. Depending on the value different types of voxel-
based phantoms are used.
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19
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Photons are emitted within a solid angle defined by the absolute value of the
index. A value of zero indicates a narrow-beam simulation.
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20,21
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Treat the absolute value as a percentage FWHM of the energy resolution
relative to the photon energy in Index 1 and calculates the thresholds of the
energy window from this value.
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33
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A negative value indicates the start block instead of the start image when
reading from the density map.
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41
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Non-uniform rotation.
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61
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Call to the isotop routine for the
transmission photons.
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85
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If a negative sign is given then a space is written to the CSV file after the
data have been written. This is useful to separare the data row into groups.
Use this in by a switch value in a script file rather than define this in the
SMC file. Otherwise a space is written for each simulation.
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