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Sinogram Creation
• Lambert-Beer law is considered with some
semplifications:
– No dependancy on the energy.
– No detector response is modeled.
– Focal spot is assumed dimensionless.
– No scatter or other artifacts are considered.
• Each detector measures the attenuated intensity
along the direction .
• The attenuation follows a negative exponential behavior
and depends on the line integral of the attenuation
coefficients met along that way.
• Since for each angle and detector only the structures
along that path are responsible for the attenuation, the
coordinates x and y can be expressed as: