Journal of Dental Research, Vol 65, 967-973, Copyright © 1986 by International & American Associations for Dental Research Online Journals
Enhancement of tomosynthetic images in dental radiology
P. F. van der Stelt, U. E. Ruttimann and R. L. Webber
In conventional projection radiography, anatomical structures superimposed
on details of interest increase the difficulty of visual interpretation.
Part of this problem can be resolved by tomographic reconstruction of
specific "tissue" slices. Computer-aided tomosynthesis is one method which
can reduce the superposition problem, but the reconstruction can benefit
from further enhancement. In this investigation, we studied two such
enhancement schemes: high-pass spatial-frequency filtration and iterative
deconvolution. The performance of each technique was judged qualitatively
in terms of the depiction of specific details of diagnostic interest, and
quantitatively in terms of the degree of success afforded by each in
rendering adjacent tissue slices independent. Both techniques demonstrated
improved performance over the status quo.
