Dear XCIST developers,
Thank you for your great work on this powerful simulation toolkit.
I would like to clarify how Hounsfield Unit (HU) values in clinical CT images are converted to material compositions and densities when such images are used as input for simulation, particularly in virtual imaging trial frameworks like the AAPM-MAR dataset generation.
Is the HU-to-material mapping directly based on the tissue composition and density definitions proposed by Schneider et al. (Phys Med Biol, 2000)?
In the AAPM-MAR dataset notes, it's stated that clinical CT images were used as phantoms, and metal was inserted virtually for simulation. I would like to understand whether the tissue composition during simulation was derived through a fixed HU→elemental composition mapping or a more complex model.
Looking forward to your insights.
Thank you!
Dear XCIST developers,
Thank you for your great work on this powerful simulation toolkit.
I would like to clarify how Hounsfield Unit (HU) values in clinical CT images are converted to material compositions and densities when such images are used as input for simulation, particularly in virtual imaging trial frameworks like the AAPM-MAR dataset generation.
Is the HU-to-material mapping directly based on the tissue composition and density definitions proposed by Schneider et al. (Phys Med Biol, 2000)?
In the AAPM-MAR dataset notes, it's stated that clinical CT images were used as phantoms, and metal was inserted virtually for simulation. I would like to understand whether the tissue composition during simulation was derived through a fixed HU→elemental composition mapping or a more complex model.
Looking forward to your insights.
Thank you!