-\twocolitemruled{{\bf Parameter}}{{\bf Options}}
-\twocolitem{{\bf --filter}}
-{Selects which filter to apply to each projection. To properly reconstruct an image, this filter should be multiplied
+\twocolitemruled{\textbf{Parameter}}{\textbf{Options}}
+\twocolitem{\textbf{--filter}}{Selects which filter to apply to each projection. To properly reconstruct an image, this filter should be multiplied