[Rtk-users] Hounsfield Calibration for CBCT .

[Simon Rit]

Hi,
I am not sure I understand your question but it seems to me that your
problem is beam hardening. It is a known limitation of polychromatic x-ray
imaging and there is a wealth of literature on the subject.
Best regards,
Simon

On Mon, Oct 9, 2017 at 10:23 AM, M B Sai Mahesh <
saimahesh.m at panaceamedical.com> wrote:

> 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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