-\chapter{Introduction}\label{introduction}%
-\pagenumbering{arabic}%
-\setheader{{\it CHAPTER \thechapter}}{}{}{}{}{{\it CHAPTER \thechapter}}%
-\setfooter{\thepage}{}{}{}{}{\thepage}%
+\chapter{Introduction}\label{introduction}
+\pagenumbering{arabic}
+\setheader{{\it CHAPTER \thechapter}}{}{}{\ctsimheadtitle}{}{{\it CHAPTER \thechapter}}%
+\ctsimfooter
+
+
+\centerline{\image{3cm;3cm}{logo-huge.eps}}
+Computed Tomography is a technique for estimating the interior of an
+object from measurement of radiation collected around the object. This
+radiation can be either projected through or emitted from the
+object. \ctsim\ simulates the process of projecting X-rays
+through a phantom object. \ctsim\ can then reconstruct the
+interior of the object from those projections. \ctsim\ integrates
+numerous visualization and analytic tools.