Cover Imaging for Physicists

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Dealing with scatter
• Avoidance
– Limit the field of view
– Grids
– Distance between patient and detector
• Correction
Correction of scatter in megavoltage cone-beam CT
Spies et al. Phys. Med. Biol 2001
Not corrected for scatter
Corrected for beam hardning
Corrected for scatter
and beam hardning