[Rtk-users] Hounsfield Calibration for CBCT .

[M B Sai Mahesh]

Dear all, 
 We are using rtk for CBCT  reconstruction (cuda FDK cone beam reconstruction 
 filter ). I am mapping the voxels to attenuation value linearly.The 
 slope and intercept for that mapping are calculated from 
 the known phantom and known KV . But linear mapping does not work for all the materials 
 in the phantom. I have read some journals and most seem to suggest that 
 attenuation and the reconstructed voxels are related linearly. 
 Can anyone suggest other ways. Any pointers to references are appreciated. 

with regards,
M.B.SaiMahesh.


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