  Purpose: To implement a framework generating synthetic spectral panoramic
images from single energy CT volumes. Using the framework output to compare the
synthetic images against experimental spectral panoramic images for
cross-verification. Methods: A simulation framework for generating synthetic
spectral panoramic images from CT volumes is described. A cone beam CT scan of
an anthropomorphic head phantom is used as input. An experimental spectral
panoramic image of the same phantom is acquired. Results: The output of the
framework of an anthropomorphic head phantom is compared against an
experimental spectral panoramic image of the same phantom. The synthetic and
experimental spectral panoramic images resemble each other considerably,
especially the bone features. In the soft tissue images, there are some
deviations, which are a result of the differences between the experimental and
synthetic processing pipelines. Conclusions: It is demonstrated that generating
synthetic spectral panoramic images from single energy CT volumes is possible.
The synthetic images have many similarities with the experimental results,
increasing the confidence in the correctness of the information contained
within experimental spectral panoramic images and indicating that the synthetic
images could be useful in further research.
